[CI Skip] release/stable 4.16.2

skip-checks: true
Correct CompactAssignments & RawSolution types for Polkadot (#3705 )
2021-06-27 04:03:48 +00:00 · 2021-06-27 05:55:11 +02:00 · 2021-06-26 08:48:42 +00:00 · 2021-06-26 10:37:06 +02:00 · 2021-06-26 10:10:46 +02:00 · 2021-06-26 05:54:47 +00:00
409 changed files with 33963 additions and 9622 deletions
@@ -1,4 +1,4 @@
-25
+31
 1.4.2
 1.6.2
 1.11.2
@@ -8,8 +8,20 @@
 2.8.2
 3.2.2
 3.2.3
-
 3.3.2
 3.6.2
 3.6.3
-3.6.4
+3.6.4
+3.7.2
+3.7.3
+3.9.2
+3.9.3
+3.10.2
+4.0.2
+4.0.3
+4.6.2
+4.7.2
+4.9.2
+4.11.2
+
+4.16.2
@@ -24,8 +24,6 @@ module.exports = {
    ...base.rules,
    // add override for any (a metric ton of them, initial conversion)
    '@typescript-eslint/no-explicit-any': 'off',
-    // these should be removed, there are 8 of them as errors
-    '@typescript-eslint/no-non-null-assertion': 'off',
    // this seems very broken atm, false positives
    '@typescript-eslint/unbound-method': 'off'
  }
@@ -0,0 +1,23 @@
+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '30 1/2 * * *'
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v2
+        with:
+          github-token: ${{ secrets.GH_PAT_BOT }}
+          issue-lock-inactive-days: '7'
+          issue-lock-comment: >
+            This thread has been automatically locked since there has not been
+            any recent activity after it was closed. Please open a new issue
+            if you think you have a related problem or query.
+          pr-lock-inactive-days: '2'
+          pr-lock-comment: >
+            This pull request has been automatically locked since there
+            has not been any recent activity after it was closed.
+            Please open a new issue for related bugs.
@@ -6,11 +6,11 @@ on:

 jobs:
  master:
+    if: "! startsWith(github.event.head_commit.message, '[CI Skip]')"
    strategy:
      matrix:
        step: ['build:release']
    name: ${{ matrix.step }}
-    if: "! startsWith(github.event.head_commit.message, '[CI Skip]') && github.repository == 'polkadot-js/api'"
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
@@ -25,10 +25,3 @@ jobs:
      run: |
        yarn install --immutable | grep -v 'YN0013'
        yarn ${{ matrix.step }}
-
-  dummy:
-    runs-on: ubuntu-latest
-    steps:
-    - name: dummy
-      run: |
-        echo "Dummy skip step"
@@ -0,0 +1,18 @@
+name: Semgrep
+on:
+  pull_request: {}
+  push:
+    branches:
+      - master
+
+jobs:
+  check:
+    if: "! startsWith(github.event.head_commit.message, '[CI Skip]') && (!github.event.pull_request || github.event.pull_request.head.repo.full_name == github.repository)"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: returntocorp/semgrep-action@v1
+        with:
+          auditOn: push
+          publishToken: ${{ secrets.SEMGREP_APP_TOKEN }}
+          publishDeployment: 1395
@@ -0,0 +1,17 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 2/2 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v3
+        with:
+          repo-token: ${{ secrets.GH_PAT_BOT }}
+          stale-issue-message: 'This issue has been open for 21 days with no activity and is not labelled as an enhancement. It will be closed in 7 days.'
+          stale-issue-label: 'stale'
+          exempt-issue-labels: '-size-l,-size-m,-size-s,-size-xl,-size-xs,[bug]'
+          days-before-stale: 21
+          days-before-close: 7
@@ -1 +1 @@
-12
+14
@@ -0,0 +1,3 @@
+build
+coverage
+packages
@@ -0,0 +1,4 @@
+// Copyright 2017-2021 @polkadot/api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+module.exports = require('@polkadot/dev/config/prettier.cjs');
@@ -10,4 +10,4 @@ plugins:
  - path: .yarn/plugins/@yarnpkg/plugin-version.cjs
    spec: "@yarnpkg/plugin-version"

-yarnPath: .yarn/releases/yarn-2.4.0.cjs
+yarnPath: .yarn/releases/yarn-3.0.0-rc.2.cjs
@@ -1,5 +1,503 @@
 # CHANGELOG

+## 4.16.2 Jun 27, 2021
+
+Upgrade priority: Low. Recommended for Polkadot with runtime >= 9050.
+
+Changes:
+
+- Correct `CompactAssignments` & `RawSolution` types for Polkadot
+
+
+## 4.16.1 Jun 26, 2021
+
+Upgrade priority: Low. Recommended for full from-genesis queries on Kusama.
+
+Contributed:
+
+- Adjust types for uniques (Thanks to https://github.com/Yuripetusko)
+
+Changes:
+
+- Add Kusama, Polkadot & Westend 9050 upgrade blocks
+- Add Kusama & Westend 9070 upgrade blocks
+- Adjust API decoration to lazy-create event and storage types
+- Use TS `override` as applicable (with `--noImplicitOverrides` option)
+- Add missing historic `Heartbeat: HeartbeatTo244` mapping to Kusama
+- Remove duplication from contracts registry
+- Add explicit check for scale-info 0.7+ (contracts index lookups)
+- Align static metadata with latest Substrate
+
+
+## 4.15.1 Jun 19, 2021
+
+Upgrade priority: Medium. Recommended for all chains where Xcm is used (addition of new `XcmOrigin`)
+
+Contributed:
+
+- Added `ChargeAssetTxPayment` extension (Thanks to https://github.com/apopiak)
+
+Changes:
+
+- Allow for type decoding of nested fixed vectors, tuples and structs
+- Added `childstate_getKeysPaged` RPC
+- Add `XcmOrigin` mapping for `OriginCaller` generation
+- Align static metadata with latest Substrate
+- Adjust error message for contracts V3 (extrinsic from runtime)
+- Correct module optionality in `api.derive.balances.account`
+- Add alias for `GenericAddress` -> `GenericMultiAddress`
+- Adjust metadata doc generation (keep spaces between subsequent lines)
+
+
+## 4.14.1 Jun 14, 2021
+
+Upgrade priority: Low. Internal adjustment only, no major external usage changes.
+
+Contributed:
+
+- Adjust types for uniques (Thanks to https://github.com/hamidra)
+- Add `ValidationCodeHash` type (Thanks to https://github.com/andresilva)
+- Extend `OriginCaller` type creation (Thanks to https://github.com/xlc)
+
+Changes:
+
+- Do strict length checking on `[u8; <length>]` type inputs
+- Adjust keys/entries retrieval batch sizes
+- Add upgrade block for Kusama 9040
+- Use `BN` imports from `@polkadot/util`
+
+
+## 4.13.1 Jun 6, 2021
+
+Upgrade priority: Medium. Required for users connecting to Statemine and future Kusama upgrades.
+
+Changes:
+
+- Overrides for `westmint` spec (same as `statemint`)
+- Adjust `tx.session.setKeys` TS augmentation to allow `string` & `Uint8Array` keys
+- Add & adjust types for latest Cumulus code
+- Added 9031-9033 upgrade block for Westend
+- Update static metadata to latest Substrate
+- Optimize map retrieval with split page sizes for keys & values
+- Sanitizing `BN` imports to `type`-only as required
+
+
+## 4.12.1 May 30, 2021
+
+Upgrade priority: Low. Internal adjustment only, no major external usage changes.
+
+Changelog:
+
+- Update `FundInfo` type with Polkadot (Thanks to https://github.com/arjanz)
+
+Changes:
+
+- Allow storage queries with default keys values
+- Align identity `Data` to limit to 32 bytes in the `Raw` enum (as per Substrate)
+- Align static (test & docs-only) metadata with latest Substrate master
+- Added 9030 upgrade blocks for Kusama & Westend
+- Cleanup of Eth pallet RPC definitions
+- Cleanup README for `@polkadot/rpc-core` (recommended for internal-usage only)
+- Cleanup internal tests (no dangling handles, cater for Jest 27)
+
+
+## 4.11.2 May 24, 2021
+
+Upgrade priority: Low. Recommended where users are having TS mismatches with type definitions created on older versions.
+
+Changes:
+
+- Add backwards-compatible TS-only `AugmentedQueryDoubleMap` type (unused now in type generation)
+
+
+## 4.11.1 May 23, 2021
+
+Upgrade priority: Low. Recommended for users using staking entries on Polkadot and users of Substrate master.
+
+Changes:
+
+- Fix metadata v13 storage decoding on `NMap`
+- Add augmentation & keys/entries for NMap types
+- Return additional error information from internal u8a decoding failures
+- Adjust Westend types for 16 nominators-only
+- Add support for `DisallowSigned` (as per shell runtime) extension
+- Display small hex-slice with u8a decoding failures
+- Add `state_getChildReadProof` RPC
+- Cleanup Rococo known types (only as used)
+- Under Node.js allow for WS receiving up to 16MB messages
+- Update entries/keys for max of 256 items per call
+
+
+## 4.10.1 May 17, 2021
+
+Upgrade priority: Medium. Recommended for uses of Polkadot/Kusama 9010 runtimes.
+
+- **Breaking change** Support for the contracts V2 compatibility has been dropped in `@polkadot/api-contract`
+
+Contributed:
+
+- Expose RPC definitions via `.meta` (Thanks to https://github.com/jiqiang90)
+- Adjust staking derives for chain-specific optional fields (https://github.com/WoeOm)
+- Update base Centrifuge types (Thanks to https://github.com/branan)
+
+Changes:
+
+- Allow for `Bounded*` type usage (as per latest Substrate)
+- Adjust internal TS definitions for providers
+- Fix `ContractRx` query result definitions (no extra Observable)
+- Handle contract call RPC result directly as `Raw` (returned as hex)
+- Use `BN_*` constants as non-specified defaults in contract interfaces
+- Remove all type overrides for node/node-template (API tracks latest)
+- Contracts ABI now supports metadata version where indexes are 0-based
+- Remove support for the old-style V2 contracts from `@polkadot/api-contract`
+- Adjust historic decoration, return as-at registry via `getHeader`, `getMetadata` & `getRuntimeVersion`
+- Adjust `VecFixed` to allow for the handling of hex inputs
+- Adjust `Compact<*>` to allow for wrapped `toBigInt()` conversions
+- Fix `isPedantic` decoding to correctly handle `Text`
+- Cater for new `phragmenElection` module naming
+- Add Kusama & Westend 9010 upgrade blocks
+- Adjust `CompactSolution` for 24 nominators
+- Bump static metadata to latest Substrate
+
+
+## 4.9.1 May 6, 2021
+
+Upgrade priority: Medium. Required for the next v0.9.0 Polkadot/Kusama chain upgrades where parachains are used.
+
+- **Breaking change** The previously deprecated contracts interfaces, has been removed. Update to `<myContract>.query.*`, `<myContract>.tx.*` and `<myCode>.tx.*` interfaces as per the previous code usage hints.
+- **Important** By default the `isPedantic` mode is now switched on for storage queries. This means that the API will fail on any types where the input/output decoding doesn't match 100%
+
+Changes:
+
+- Re-add isPedantic check on storage decoding
+- `ConsensusEngineId` now implements `[u8;4]` (mapping closer to Rust source)
+- Additional Xcm types
+- Adjust parachain types
+- Remove error logging on createType (details passed in error)
+- Adjust `ContractInfo` type as per latest Substrate
+- Adjust `DigestItem` type as per latest Substrate
+- Adjust re-encoding of `BitVec` based on decoded length
+- Added `contracts_instantiate`, `state_traceBlock` & `system_reservedPeers` RPCs
+- Prepare for auto-capability detection with historic `.at` queries
+- Add known upgrade block for Westend 900 & 9000
+- Remove all deprecated interfaces inside `@polkadot/api-contracts`
+- Initial support for NMap storage keys
+- Support metadata v13 from Substrate (upcoming upgrade)
+- Optimize historic metadata retrieval from rpc core
+
+
+## 4.8.1 May 2, 2021
+
+Upgrade priority: Low. Recommended when using or developing for parachains.
+
+Changes:
+
+- De-alias xcm `Outcome` (used in multiple pallettes)
+- Adjust xcm types as per latest, e.g. `XcmError`
+- Fix generate of well-known storage keys (e.g. `:code`)
+- Optimize metadata unknown type validation
+- Allow metadata creation for `Map` or `Record`
+- Expose additional camelCase `method` on `AbiMessage` (maps to decorated name)
+- Added explicit double-byte ss58 `AccountId` encoding test
+- Add known upgrade block for Polkadot v30
+- Cleanup WebSocket handlers when close event has been received
+- Update to latest Substrate metadata
+
+
+## 4.7.2 Apr 26, 2021
+
+Upgrade priority: Low. Recommended for users of 4.7.1 using nvm
+
+Changes:
+
+- Update `EthBlock`/`EthHeader` types (as per Rust origin)
+- Updated Xcm `OriginKind` enum
+- Add derives for `membership`
+- Cleanups on encodedLength calculations
+- Update `.nvmrc` to reflect engines changes
+
+
+## 4.7.1 Apr 25, 2021
+
+Upgrade priority: Low. Recommended for users following Substrate master.
+
+Changes:
+
+- Adjust Struct decoding with better error messages on invalid input objects
+- Add support for new `BoundedVec` type
+- Expand `Data` type (as used in identity), with all is/as getters
+- Updated `Xcm` types (with Plularity)
+- Adjust `DispatchError` type as per current Substrate master
+- Adjusted Statemint `Proxy` type
+- Remove metadata generation dependency on well-known.json (dedupe)
+- Adjust WebSocket reconnection delay from 1s to 2.5s
+- Revert Beefy keys addition for Westend
+- Add explicit `engines` config to `package.json`
+- Support for `None` in `RewardDestination`
+- Align with latest substrate metadata
+
+
+## 4.6.2 Apr 19, 2021
+
+Upgrade priority: Low. Recommended for users of Kusama/Polkadot.
+
+Changes:
+
+- Correct Kusama/Polkadot runtime 30 session key definitions
+
+
+## 4.6.1 Apr 19, 2021
+
+Upgrade priority: Low. Recommended if used in a Node.js 15.x environment.
+
+Changes:
+
+- Assert keypair validity in signing operations
+- Expose `internalError` on submittable results (e.g. event decoding errors)
+- Simplify session derives for old/new
+- Add Statemint to known types
+- Add support for `rpc.beefy.subscribeJustifications`
+- Update Xcm types
+- Explicitly handle `isReadyOrError` with `Api.create`
+- Add Kusama upgrade block for 2030
+
+
+## 4.5.1 Apr 12, 2021
+
+Upgrade priority: Low. Recommended with usage with the Rococo testnet.
+
+Changes:
+
+- Update parachain types as per latest Polkadot
+- Cater for `Keys` with `BEEFY` session keys
+- Update `Keys` injection to allow for on-chain type detection
+- Add `Westend` known upgrade block for runtime 50
+- Align types with latest Substrate master
+- Adjust keepalive `system_health` timer
+
+
+## 4.4.1 Apr 5, 2021
+
+Upgrade priority: Low. Recommended with usage with the Rococo testnet.
+
+Changes:
+
+- Add `ServiceQuality` type for Cumulus
+- Adjust XCM MultiLocation type (X5 to X8 junctions)
+- Add Polkadot 29 upgrade block
+
+
+## 4.3.1 Mar 29, 2021
+
+Upgrade priority: Low.
+
+Contributed:
+
+- Fix documentation on ABI parameters (Thanks to https://github.com/vminkov)
+
+Changes:
+
+- Warn on usage of deprecated contract interfaces
+- Update `ParaInfo` type
+- Council should be optional in treasury derives
+- Allow extraction of session derives indexes with no staking
+
+
+## 4.2.1 Mar 22, 2021
+
+Upgrade priority: Low. Recommended when tracking the latest updates from Substrate.
+
+Contributed:
+
+- Fix contract even decoding on Substrate 3 (Thanks to https://github.com/vminkov)
+
+Changes:
+
+- Adjust `Extender{Header, SignedBlock}` types to ensure at-block `Header` types are used
+- Explicit definition for new Rococo triple refcount `AccountData` types
+- Convert metadata private class fields to ES-private
+- Adjust `SignedBlock` type for new `justifications` field
+- Optimize society derive for multi accounts
+- Bump metadata to latest substrate version
+
+
+## 4.1.1 Mar 15, 2021
+
+Upgrade priority: Low. Recommended when tracking the latest updates from Substrate.
+
+Changes:
+
+- Fix author extraction for last block in a session
+- Expand `SignerPayload` to inject/expose custom signed extensions
+- `ConsensusEngineId` formats non-Ascii engines correctly
+- Allow `getBlock/Header` derives to use as-at registry (instead of latest)
+- Cleanup `RpcCore` augmentation (removing TS warnings on typegen chains)
+- Add upgrade block for Kusama 2029
+- Ensure that type alias overrides also apply to map keys
+- Check type generation against fallbacks (build-time only sanity check)
+- Add `mmr_generateProof` RPC
+- Align types with latest substrate master
+- Apply latest Polkadot auctions/crowdloan/parachains/slots types
+
+
+## 4.0.3 Mar 8, 2021
+
+Upgrade priority: Low. Recommended if you use the API to sync the full chain, most notably Polkadot.
+
+Contributed:
+
+- Re-add unused historical `SudoBalances` to `ProxyType` (Thanks to https://github.com/emostov)
+
+
+## 4.0.2 Mar 8, 2021
+
+Upgrade priority: High. Required if you are using 4.0.1 in a Node.js environment.
+
+Changes:
+
+- Fix import from `@polkadot/x-rxjs` in Node environments (From common)
+- Add correct types for `Phase` is new validator elections module
+
+
+## 4.0.1 Mar 7, 2021
+
+Upgrade priority: Low. Recommended for users wanting to keep updated with chain changes.
+
+**Important** In the 4.0 version the default package type has been changed to ESM modules by default. This should not affect usage, however since the output formats changed, a new major version is required.
+
+Contributed:
+
+- Expose `unknownTypes` on the registry interface (Thanks to https://github.com/ii-ii-ii)
+
+Changes:
+
+- Build to ESM by default (with cjs versions via export map)
+- Enum `.toSON()` now encodes all keys as `camelCase` (aligning with the output from Substrate)
+- Add `createdAtHash?: Hash` to `Codec` interface (filled-in by storage retrievals)
+- Expose the source hash as `wamHash` on Abi parsed instances
+- Use `parentHash` when creating mortal era (handles frequent forks better)
+- Add `AccountInfoWithTripleRefCount` to cater for latest Substrate
+- Add upgrade block for Westend 49
+
+
+## 3.11.1 Feb 28, 2021
+
+Upgrade priority: Low. Recommended for users wanting to keep updated with chain changes.
+
+Contributed:
+
+- Clean Websocket states on disconnects (Thanks to https://github.com/ianhe8x)
+- Support for C-like indexed enums (Thanks to https://github.com/xlc)
+
+Changes:
+
+- Adjust council derives to cater for current-generation candidate mapping
+- Allow for override of codec hasher (& output type)
+- Adjust submittables to submit hex-encoded addresses to queries
+- Adjust initialization to always retrieve tx version from Metadata only
+- Update election types as per latest Substrate
+- Add types for the new gilt module
+- Upgrade to the latest Substrate metadata
+- Adjust package detection to check for local monorepo dependencies
+- Ensure that metadata `.toJSON()` does apply type aliasses
+
+
+## 3.10.2 Feb 23, 2021
+
+Upgrade priority: Medium. Recommended for users of chains where `MultiAddress` is in-use and blocks are decoded.
+
+Changes:
+
+- Fix decoding for `MultiAddress` enum where non-`AccountId` variable-lengths are provided as part of a stream
+- Added known Polkadot 28 upgrade block
+- Update for latest Substrate contracts `Schedule` types
+
+
+## 3.10.1 Feb 22, 2021
+
+Upgrade priority: Low.
+
+Changes:
+
+- Adjust ConsumedWeight types to align with Rust module code
+- Check for connection status in subscription unsubscribe
+- Adjust staking reward derives ordering for better performance
+- Adapt detection imports to remove `.json` dependencies (Better behavior using Node.js with ESM)
+
+
+## 3.9.3 Feb 16, 2021
+
+Upgrade priority: Low. Recommended for parachain builders since it contains the updated parachain types.
+
+Changes:
+
+- Adjusted parachain `PersistedValidationData` structure
+
+
+## 3.9.2 Feb 15, 2021
+
+Upgrade priority: Low. Recommended for parachain builders since it contains the latest parachain types.
+
+Contributed:
+
+- Update README links (Thanks to https://github.com/wirednkod)
+
+Changes:
+
+- Added missing Culmulus `ParachainInherentData` & `MessageQueueChain` types
+- Add alias for `system_unstable_networkState` RPC
+
+
+## 3.9.1 Feb 14, 2021
+
+Upgrade priority: Low.
+
+- **Important** The `Result<T, E>` has been updated in the generation and the base types to follow the Rust version 100%. This means `{as, is}Error` is now available as `{as, is}Err` on the `Result` type. The older versions can still be used, but the `*Error` interfaces are now marked as deprecated.
+
+Changes:
+
+- Adjust `Result<T, E>` interface to be 100% compatible with the Rust version
+- Add the `2028` upgrade to the known upgrades (optimizing certain `.at` queries)
+- Adjust council derives to cater for latest Substrate & Polkadot
+- Adjust Rococo know type definitions to cater for the latest update
+- Update types for latest Polkadot/Substrate
+- Add generic arguments for TypeScript users to `.entries/.keys` to deal with the key typings
+
+
+## 3.8.1 Feb 7, 2021
+
+Upgrade priority: Low. Recommended for users of the latest Substrate master, especially using contracts.
+
+- **Important** The `api-contract` `Code` now supports deploying the code and a contract in on operation. This aligns with the latest Substrate where code cannot be uploaded with a contract. The `createBlueprint` is therefore deprecated, use `code.tx.<constructor>(...)` to deploy code. (Compatible with both old and new versions of Substrate)
+
+Contributed:
+
+- Add support for latest Frontier RPCs (Thanks to https://github.com/jnaviask)
+- Fix user-supplied signed extensions type signature (Thanks to https://github.com/ntduan)
+
+Changes:
+
+- Expand `api-contract` to allow for `Code` to deploy contract alongside code. `createBlueprint` is now deprecated, replaced by `createContract` or the preferred `code.tx.<constructor>`, which uploads and deploys the code in one operation. This aligns with the current Substrate master contracts implementation.
+- Allow for signed extensions to be supplied inside type bundles
+- Ensure that the auto-connect state is checked on auto-connections (respecting disconnect)
+- Added `CancelProxy` to `ProxyTypes on Polkadot, Kusama & Westend
+- Updated to latest Substrate metadata
+
+
+## 3.7.3 Feb 2, 2021
+
+Changes:
+
+- Added Polkadot upgrade block for runtime 27 (known checkpoint optimization)
+
+
+## 3.7.2 Feb 2, 2021
+
+Changes:
+
+- Adjusted the `Keys` type for the 28 runtime on Kusama, Polkadot & Westend
+
+
 ## 3.7.1 Feb 1, 2021

 Upgrade priority: Low. However recommended for current Substrate master, Polkadot and Rococo users and those wishing to support the upcoming Polkadot 28 runtime with the new `MultiAddress`.
@@ -7,7 +7,7 @@

 # @polkadot/api

-This library provides a clean wrapper around all the methods exposed by a Polkadot/Substrate network client and defines all the types exposed by a node. For complete documentation around the classes, interfaces and their use, visit the [documentation portal](https://polkadot.js.org/api/).
+This library provides a clean wrapper around all the methods exposed by a Polkadot/Substrate network client and defines all the types exposed by a node. For complete documentation around the classes, interfaces and their use, visit the [documentation portal](https://polkadot.js.org/docs/api/).

 If you are an existing user, please be sure to track the [CHANGELOG](CHANGELOG.md) and [UPGRADING](UPGRADING.md) guides when changing versions.

@@ -21,8 +21,8 @@ The API is split up into a number of internal packages -

 - [@polkadot/api](packages/api/) The API library, providing both Promise and RxJS Observable-based interfaces. This is the main user-facing entry point.
 - [@polkadot/api-derive](packages/api-derive/) Derived results that are injected into the API, allowing for combinations of various query results (only used internally and exposed on the Api instances via `api.derive.*`)
- [@polkadot/api-metadata](packages/api-metadata/) Base extrinsic, storage and constant injectors for injection
- [@polkadot/rpc-core](packages/rpc-core/) Wrapper around all [JSON-RPC methods](https://polkadot.js.org/api/substrate/rpc.html) exposed by a Polkadot network client
+- [@polkadot/metadata](packages/metadata/) Base extrinsic, storage and constant injectors for injection
+- [@polkadot/rpc-core](packages/rpc-core/) Wrapper around all [JSON-RPC methods](https://polkadot.js.org/docs/substrate/rpc) exposed by a Polkadot network client
 - [@polkadot/rpc-provider](packages/rpc-provider/) Providers for connecting to nodes, including WebSockets and Http

 Type definitions for interfaces as exposed by Polkadot & Substrate clients -
@@ -3,7 +3,8 @@

 const config = require('@polkadot/dev/config/jest.cjs');

-module.exports = Object.assign({}, config, {
+module.exports = {
+  ...config,
  moduleNameMapper: {
    '@polkadot/api-(contract|derive)(.*)$': '<rootDir>/packages/api-$1/src/$2',
    // eslint-disable-next-line sort-keys
@@ -26,5 +27,6 @@ module.exports = Object.assign({}, config, {
    '<rootDir>/packages/types/build',
    '<rootDir>/packages/types-known/build'
  ],
-  resolver: '@polkadot/dev/config/jest-resolver.cjs'
-});
+  testTimeout: 10000,
+  transformIgnorePatterns: ['/node_modules/(?!@polkadot|@babel/runtime/helpers/esm/)']
+};
@@ -8,7 +8,7 @@
    "packages/*"
  ],
  "resolutions": {
-    "typescript": "^4.1.3"
+    "typescript": "^4.3.4"
  },
  "scripts": {
    "build": "yarn build:interfaces && polkadot-dev-build-ts",
@@ -20,19 +20,19 @@
    "lint": "polkadot-dev-run-lint",
    "clean": "polkadot-dev-clean-build",
    "postinstall": "polkadot-dev-yarn-only",
-    "test": "polkadot-dev-run-test --coverage --runInBand --testPathIgnorePatterns e2e",
-    "test:one": "polkadot-dev-run-test",
+    "test": "polkadot-dev-run-test --coverage --forceExit --runInBand --testPathIgnorePatterns e2e",
+    "test:one": "polkadot-dev-run-test --detectOpenHandles --forceExit",
    "test:watch": "polkadot-dev-run-test --watch"
  },
  "devDependencies": {
-    "@babel/core": "^7.12.10",
-    "@babel/register": "^7.12.10",
-    "@babel/runtime": "^7.12.5",
-    "@polkadot/dev": "^0.61.24",
-    "@polkadot/ts": "^0.3.59",
+    "@babel/core": "^7.14.6",
+    "@babel/register": "^7.14.5",
+    "@babel/runtime": "^7.14.6",
+    "@polkadot/dev": "^0.62.43",
+    "@polkadot/ts": "^0.4.1",
    "@polkadot/typegen": "workspace:packages/typegen",
-    "@types/jest": "^26.0.20",
+    "@types/jest": "^26.0.23",
    "copyfiles": "^2.4.1"
  },
-  "version": "3.7.1"
+  "version": "4.16.2"
 }
@@ -8,7 +8,7 @@ import { Abi } from '@polkadot/api-contract';

 const wsProvider = new WsProvider(<...Node Url...>);
 const api = await ApiPromise.create({ provider: wsProvider });
-const abi = new Abi(api.registry, <...JSON ABI...>);
+const abi = new Abi(<...JSON ABI...>, api.registry.getChainProperties());

 api.tx.contracts
  .call(<contract addr>, <value>, <max gas>, abi.messages.<method name>(<...params...>))
@@ -1,9 +1,16 @@
 {
  "name": "@polkadot/api-contract",
-  "version": "3.7.1",
+  "version": "4.16.2",
+  "type": "module",
  "description": "Interfaces for interacting with contracts and contract ABIs",
  "main": "index.js",
-  "sideEffects": false,
+  "sideEffects": [
+    "./detectPackage.js",
+    "./detectPackage.cjs"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
  "author": "Jaco Greeff <jacogr@gmail.com>",
  "maintainers": [],
  "contributors": [],
@@ -12,11 +19,10 @@
  "bugs": "https://github.com/polkadot-js/api/issues",
  "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-contract#readme",
  "dependencies": {
-    "@babel/runtime": "^7.12.5",
-    "@polkadot/api": "3.7.1",
-    "@polkadot/types": "3.7.1",
-    "@polkadot/util": "^5.5.1",
-    "@polkadot/x-rxjs": "^5.5.1",
-    "bn.js": "^4.11.9"
+    "@babel/runtime": "^7.14.6",
+    "@polkadot/api": "4.16.2",
+    "@polkadot/types": "4.16.2",
+    "@polkadot/util": "^6.10.1",
+    "@polkadot/x-rxjs": "^6.10.1"
  }
 }
@@ -1,10 +1,18 @@
 // Copyright 2017-2021 @polkadot/api-contract authors & contributors
 // SPDX-License-Identifier: Apache-2.0

+import { blake2AsHex } from '@polkadot/util-crypto';
+
 import abis from '../test/contracts';
 import { Abi } from '.';

 interface JSONAbi {
+  source: {
+    compiler: string,
+    hash: string,
+    language: string,
+    wasm: string
+  },
  spec: {
    messages: {
      name: string[] | string
@@ -27,4 +35,18 @@ describe('Abi', (): void => {
      }
    });
  });
+
+  it('has the correct hash for the source', (): void => {
+    const bundle = abis.ink_flipperBundle as JSONAbi;
+    const abi = new Abi(bundle as any);
+
+    // manual
+    expect(bundle.source.hash).toEqual(blake2AsHex(bundle.source.wasm));
+
+    // the Codec hash
+    expect(bundle.source.hash).toEqual(abi.project.source.wasm.hash.toHex());
+
+    // the hash as per the actual Abi
+    expect(bundle.source.hash).toEqual(abi.project.source.wasmHash.toHex());
+  });
 });
@@ -6,12 +6,10 @@ import type { ChainProperties, ContractConstructorSpec, ContractEventSpec, Contr
 import type { AnyJson, Codec, CodecArg } from '@polkadot/types/types';
 import type { AbiConstructor, AbiEvent, AbiMessage, AbiParam, DecodedEvent, DecodedMessage } from './types';

-import { assert, assertReturn, compactAddLength, compactStripLength, isNumber, isObject, isString, logger, stringCamelCase, u8aConcat, u8aToHex } from '@polkadot/util';
+import { assert, assertReturn, compactAddLength, compactStripLength, isNumber, isObject, isString, logger, stringCamelCase, stringify, u8aConcat, u8aToHex } from '@polkadot/util';

 import { MetaRegistry } from './MetaRegistry';

-const EMPTY_U8A = new Uint8Array();
-
 const l = logger('Abi');

 function findMessage <T extends AbiMessage> (list: T[], messageOrId: T | string | number): T {
@@ -21,7 +19,7 @@ function findMessage <T extends AbiMessage> (list: T[], messageOrId: T | string
      ? list.find(({ identifier }) => [identifier, stringCamelCase(identifier)].includes(messageOrId.toString()))
      : messageOrId;

-  return assertReturn(message, `Attempted to call an invalid contract interface, ${JSON.stringify(messageOrId)}`);
+  return assertReturn(message, () => `Attempted to call an invalid contract interface, ${stringify(messageOrId)}`);
 }

 export class Abi {
@@ -45,13 +43,13 @@ export class Abi {
    assert(isObject(json) && !Array.isArray(json) && json.metadataVersion && isObject(json.spec) && !Array.isArray(json.spec) && Array.isArray(json.spec.constructors) && Array.isArray(json.spec.messages), 'Invalid JSON ABI structure supplied, expected a recent metadata version');

    this.json = json;
-    this.registry = new MetaRegistry(chainProperties);
+    this.registry = new MetaRegistry(json.metadataVersion as string, chainProperties);
    this.project = this.registry.createType('ContractProject', json);

    this.registry.setMetaTypes(this.project.types);

    this.project.types.forEach((_, index) =>
-      this.registry.getMetaTypeDef({ type: this.registry.createType('SiLookupTypeId', index + 1) })
+      this.registry.getMetaTypeDef({ type: this.registry.createType('SiLookupTypeId', index + this.registry.typeOffset) })
    );
    this.constructors = this.project.spec.constructors.map((spec: ContractConstructorSpec, index) =>
      this.#createMessage(spec, index, {
@@ -81,7 +79,7 @@ export class Abi {
    const index = data[0];
    const event = this.#events[index];

-    assert(event, `Unable to find event with index ${index}`);
+    assert(event, () => `Unable to find event with index ${index}`);

    return event.fromU8a(data.subarray(1));
  }
@@ -118,7 +116,7 @@ export class Abi {
          type: this.registry.getMetaTypeDef(arg.type)
        };
      } catch (error) {
-        l.error(`Error expanding argument ${index} in ${JSON.stringify(spec)}`);
+        l.error(`Error expanding argument ${index} in ${stringify(spec)}`);

        throw error;
      }
@@ -129,7 +127,7 @@ export class Abi {
    const args = this.#createArgs(spec.args, spec);
    const event = {
      args,
-      docs: spec.docs.map((doc) => doc.toString()),
+      docs: spec.docs.map((d) => d.toString()),
      fromU8a: (data: Uint8Array): DecodedEvent => ({
        args: this.#decodeArgs(args, data),
        event
@@ -143,19 +141,21 @@ export class Abi {

  #createMessage = (spec: ContractMessageSpec | ContractConstructorSpec, index: number, add: Partial<AbiMessage> = {}): AbiMessage => {
    const args = this.#createArgs(spec.args, spec);
+    const identifier = spec.name.toString();
    const message = {
      ...add,
      args,
-      docs: spec.docs.map((doc) => doc.toString()),
+      docs: spec.docs.map((d) => d.toString()),
      fromU8a: (data: Uint8Array): DecodedMessage => ({
        args: this.#decodeArgs(args, data),
        message
      }),
-      identifier: spec.name.toString(),
+      identifier,
      index,
+      method: stringCamelCase(identifier),
      selector: spec.selector,
-      toU8a: (params: CodecArg[], additional?: Uint8Array) =>
-        this.#encodeArgs(spec, args, params, additional)
+      toU8a: (params: CodecArg[]) =>
+        this.#encodeArgs(spec, args, params)
    };

    return message;
@@ -185,14 +185,13 @@ export class Abi {
    return message.fromU8a(trimmed.subarray(4));
  }

-  #encodeArgs = ({ name, selector }: ContractMessageSpec | ContractConstructorSpec, args: AbiParam[], data: CodecArg[], additional = EMPTY_U8A): Uint8Array => {
-    assert(data.length === args.length, `Expected ${args.length} arguments to contract message '${name.toString()}', found ${data.length}`);
+  #encodeArgs = ({ name, selector }: ContractMessageSpec | ContractConstructorSpec, args: AbiParam[], data: CodecArg[]): Uint8Array => {
+    assert(data.length === args.length, () => `Expected ${args.length} arguments to contract message '${name.toString()}', found ${data.length}`);

    return compactAddLength(
      u8aConcat(
        this.registry.createType('ContractSelector', selector).toU8a(),
-        ...args.map(({ type }, index) => this.registry.createType(type.type as 'Text', data[index]).toU8a()),
-        additional
+        ...args.map(({ type }, index) => this.registry.createType(type.type as 'Text', data[index]).toU8a())
      )
    );
  }
@@ -14,8 +14,8 @@ interface PartialTypeSpec {
 }

 // convert the offset into project-specific, index-1
-export function getRegistryOffset (id: SiLookupTypeId): number {
-  return id.toNumber() - 1;
+export function getRegistryOffset (id: SiLookupTypeId, typeOffset: number): number {
+  return id.toNumber() - typeOffset;
 }

 const PRIMITIVE_ALIAS: Record<string, keyof InterfaceTypes> = {
@@ -28,11 +28,18 @@ const PRIMITIVE_ALWAYS = ['AccountId', 'AccountIndex', 'Address', 'Balance'];
 export class MetaRegistry extends TypeRegistry {
  public readonly metaTypeDefs: TypeDef[] = [];

+  public readonly typeOffset;
+
  #siTypes: SiType[] = [];

-  constructor (chainProperties?: ChainProperties) {
+  constructor (metadataVersion: string, chainProperties?: ChainProperties) {
    super();

+    const [major, minor] = metadataVersion.split('.').map((n) => parseInt(n, 10));
+
+    // type indexes are 1-based pre 0.7 and 0-based post
+    this.typeOffset = (major === 0 && minor < 7) ? 1 : 0;
+
    if (chainProperties) {
      this.setChainProperties(chainProperties);
    }
@@ -43,7 +50,7 @@ export class MetaRegistry extends TypeRegistry {
  }

  public getMetaTypeDef (typeSpec: PartialTypeSpec): TypeDef {
-    const offset = getRegistryOffset(typeSpec.type);
+    const offset = getRegistryOffset(typeSpec.type, this.typeOffset);
    let typeDef = this.metaTypeDefs[offset];

    if (!typeDef) {
@@ -78,19 +85,22 @@ export class MetaRegistry extends TypeRegistry {
  }

  #getMetaType = (id: SiLookupTypeId): SiType => {
-    const type = this.#siTypes[getRegistryOffset(id)];
+    const type = this.#siTypes[getRegistryOffset(id, this.typeOffset)];

-    assert(!isUndefined(type), `getMetaType:: Unable to find ${id.toNumber()} in type values`);
+    assert(!isUndefined(type), () => `getMetaType:: Unable to find ${id.toNumber()} in type values`);

    return this.createType('SiType', type);
  }

  #extract = (type: SiType, id: SiLookupTypeId): TypeDef => {
    const path = [...type.path];
-    const pathFinal = path.length ? path[path.length - 1].toString() : '';
+    const isPrimitivePath = !!path.length && (
+      (path.length > 2 && path[0].eq('ink_env') && path[1].eq('types')) ||
+      PRIMITIVE_ALWAYS.includes(path[path.length - 1].toString())
+    );
    let typeDef: Omit<TypeDef, 'type'>;

-    if (type.path.join('::').startsWith('ink_env::types::') || PRIMITIVE_ALWAYS.includes(pathFinal)) {
+    if (isPrimitivePath) {
      typeDef = this.#extractPrimitivePath(type);
    } else if (type.def.isPrimitive) {
      typeDef = this.#extractPrimitive(type);
@@ -116,7 +126,7 @@ export class MetaRegistry extends TypeRegistry {
        : {}
      ),
      ...(path.length > 1
-        ? { namespace: path.map((segment) => segment.toString()).join('::') }
+        ? { namespace: path.map((s) => s.toString()).join('::') }
        : {}
      ),
      ...(type.params.length > 0
@@ -128,7 +138,7 @@ export class MetaRegistry extends TypeRegistry {
  }

  #extractArray = ({ len: length, type }: SiTypeDefArray): Omit<TypeDef, 'type'> => {
-    assert(!length || length.toNumber() <= 256, 'MetaRegistry: Only support for [Type; <length>], where length > 256');
+    assert(!length || length.toNumber() <= 256, 'MetaRegistry: Only support for [Type; <length>], where length <= 256');

    return {
      info: TypeDefInfo.VecFixed,
@@ -144,27 +154,25 @@ export class MetaRegistry extends TypeRegistry {
    ]),
    [true, true]);

-    let info;
+    assert(isTuple || isStruct, 'Invalid fields type detected, expected either Tuple or Struct');

-    // check for tuple first (no fields may be available)
-    if (isTuple) {
-      info = TypeDefInfo.Tuple;
-    } else if (isStruct) {
-      info = TypeDefInfo.Struct;
-    } else {
-      throw new Error('Invalid fields type detected, expected either Tuple or Struct');
-    }
-
-    const sub = fields.map(({ name, type }) => {
-      return {
-        ...this.getMetaTypeDef({ type }),
-        ...(name.isSome ? { name: name.unwrap().toString() } : {})
-      };
-    });
+    const sub = fields.map(({ name, type }) => ({
+      ...this.getMetaTypeDef({ type }),
+      ...(name.isSome
+        ? { name: name.unwrap().toString() }
+        : {}
+      )
+    }));

    return isTuple && sub.length === 1
      ? sub[0]
-      : { info, sub };
+      : {
+        // check for tuple first (no fields may be available)
+        info: isTuple
+          ? TypeDefInfo.Tuple
+          : TypeDefInfo.Struct,
+        sub
+      };
  }

  #extractPrimitive = (type: SiType): TypeDef => {
@@ -184,7 +192,7 @@ export class MetaRegistry extends TypeRegistry {
  }

  #extractSequence = ({ type }: SiTypeDefSequence, id: SiLookupTypeId): Omit<TypeDef, 'type'> => {
-    assert(!!type, `ContractRegistry: Invalid sequence type found at id ${id.toString()}`);
+    assert(!!type, () => `ContractRegistry: Invalid sequence type found at id ${id.toString()}`);

    return {
      info: TypeDefInfo.Vec,
@@ -205,32 +213,28 @@ export class MetaRegistry extends TypeRegistry {
    const { params, path } = this.#getMetaType(id);
    const specialVariant = path[0].toString();

-    if (specialVariant === 'Option') {
-      return {
+    return specialVariant === 'Option'
+      ? {
        info: TypeDefInfo.Option,
        sub: this.getMetaTypeDef({ type: params[0] })
-      };
-    } else if (specialVariant === 'Result') {
-      return {
-        info: TypeDefInfo.Result,
-        sub: params.map((type, index) => ({
-          name: ['Ok', 'Error'][index],
-          ...this.getMetaTypeDef({ type })
-        }))
-      };
-    }
-
-    return {
-      info: TypeDefInfo.Enum,
-      sub: this.#extractVariantSub(variants)
-    };
+      }
+      : specialVariant === 'Result'
+        ? {
+          info: TypeDefInfo.Result,
+          sub: params.map((type, index) => ({
+            name: ['Ok', 'Error'][index],
+            ...this.getMetaTypeDef({ type })
+          }))
+        }
+        : {
+          info: TypeDefInfo.Enum,
+          sub: this.#extractVariantSub(variants)
+        };
  }

  #extractVariantSub = (variants: SiVariant[]): TypeDef[] => {
-    const isAllUnitVariants = variants.every(({ fields }) => fields.length === 0);
-
-    if (isAllUnitVariants) {
-      return variants.map(({ discriminant, name }) => ({
+    return variants.every(({ fields }) => fields.length === 0)
+      ? variants.map(({ discriminant, name }) => ({
        ...(
          discriminant.isSome
            ? { ext: { discriminant: discriminant.unwrap().toNumber() } }
@@ -239,14 +243,10 @@ export class MetaRegistry extends TypeRegistry {
        info: TypeDefInfo.Plain,
        name: name.toString(),
        type: 'Null'
-      }));
-    }
-
-    return variants.map(({ fields, name }) =>
-      withTypeString({
+      }))
+      : variants.map(({ fields, name }) => withTypeString({
        ...this.#extractFields(fields),
        name: name.toString()
-      })
-    );
+      }));
  }
 }
@@ -5,7 +5,7 @@ import type { ApiTypes, DecorateMethod } from '@polkadot/api/types';
 import type { AnyJson, Registry } from '@polkadot/types/types';

 import { ApiBase } from '@polkadot/api/base';
-import { assert } from '@polkadot/util';
+import { assert, isFunction } from '@polkadot/util';

 import { Abi } from '../Abi';

@@ -26,6 +26,7 @@ export abstract class Base<ApiType extends ApiTypes> {
    this.registry = this.abi.registry;
    this._decorateMethod = decorateMethod;

-    assert(this.api.rx.tx.contracts && this.api.rx.tx.contracts.putCode, 'You need to connect to a node with the contracts module, the metadata does not enable api.tx.contracts on this instance');
+    assert(!!(api && api.isConnected && api.tx && api.tx.contracts && Object.keys(api.tx.contracts).length), 'Your API has not been initialized correctly and it not decorated with the runtime interfaces for contracts as retrieved from the on-chain runtime');
+    assert(isFunction(api.tx.contracts.instantiateWithCode), 'You need to connect to a chain with a runtime with a V3 contracts module. The runtime does not expose api.tx.contracts.instantiateWithCode');
  }
 }
@@ -6,44 +6,17 @@ import type { ApiTypes, DecorateMethod } from '@polkadot/api/types';
 import type { AccountId, EventRecord, Hash } from '@polkadot/types/interfaces';
 import type { AnyJson, CodecArg, ISubmittableResult } from '@polkadot/types/types';
 import type { AbiConstructor, BlueprintOptions } from '../types';
-import type { BlueprintDeploy, ContractGeneric, MapConstructorExec } from './types';
-
-import BN from 'bn.js';
+import type { MapConstructorExec } from './types';

 import { SubmittableResult } from '@polkadot/api';
 import { ApiBase } from '@polkadot/api/base';
-import { Bytes } from '@polkadot/types';
-import { compactAddLength, isUndefined, stringCamelCase, u8aToU8a } from '@polkadot/util';
-import { randomAsU8a } from '@polkadot/util-crypto';
+import { BN_ZERO, isUndefined } from '@polkadot/util';

 import { Abi } from '../Abi';
-import { applyOnEvent, extractOptions, isOptions } from '../util';
+import { applyOnEvent } from '../util';
 import { Base } from './Base';
 import { Contract } from './Contract';
-
-const EMPTY_SALT = new Uint8Array();
-
-function createTx <ApiType extends ApiTypes> (fn: (options: BlueprintOptions, params: CodecArg[]) => SubmittableExtrinsic<ApiType, BlueprintSubmittableResult<ApiType>>): BlueprintDeploy<ApiType> {
-  return (options: BigInt | string | number | BN | BlueprintOptions, ...params: CodecArg[]): SubmittableExtrinsic<ApiType, BlueprintSubmittableResult<ApiType>> =>
-    isOptions(options)
-      ? fn(options, params)
-      : fn(...extractOptions(options, params));
-}
-
-function createWithId <T> (fn: (constructorOrId: AbiConstructor | string | number, options: BlueprintOptions, params: CodecArg[]) => T): ContractGeneric<BlueprintOptions, T> {
-  return (constructorOrId: AbiConstructor | string | number, options: BigInt | string | number | BN | BlueprintOptions, ...params: CodecArg[]): T =>
-    isOptions(options)
-      ? fn(constructorOrId, options, params)
-      : fn(constructorOrId, ...extractOptions(options, params));
-}
-
-function encodeSalt (salt: Uint8Array | string | null = randomAsU8a()) {
-  return salt instanceof Bytes
-    ? salt
-    : salt && salt.length
-      ? compactAddLength(u8aToU8a(salt))
-      : EMPTY_SALT;
-}
+import { createBluePrintTx, encodeSalt } from './util';

 export class BlueprintSubmittableResult<ApiType extends ApiTypes> extends SubmittableResult {
  public readonly contract?: Contract<ApiType>;
@@ -61,25 +34,16 @@ export class Blueprint<ApiType extends ApiTypes> extends Base<ApiType> {
   */
  public readonly codeHash: Hash;

-  /**
-   * @deprecated
-   * @description Deprecated. Use `.tx.<constructorName>`. Creates a contract in a non-deterministic way.
-   */
-  public readonly createContract: ContractGeneric<BlueprintOptions, SubmittableExtrinsic<ApiType, BlueprintSubmittableResult<ApiType>>>;
-
  readonly #tx: MapConstructorExec<ApiType> = {};

  constructor (api: ApiBase<ApiType>, abi: AnyJson | Abi, codeHash: string | Hash | Uint8Array, decorateMethod: DecorateMethod<ApiType>) {
    super(api, abi, decorateMethod);

    this.codeHash = this.registry.createType('Hash', codeHash);
-    this.createContract = createWithId(this.#deploy);

    this.abi.constructors.forEach((c): void => {
-      const messageName = stringCamelCase(c.identifier);
-
-      if (isUndefined(this.#tx[messageName])) {
-        this.#tx[messageName] = createTx((o, p) => this.#deploy(c, o, p));
+      if (isUndefined(this.#tx[c.method])) {
+        this.#tx[c.method] = createBluePrintTx((o, p) => this.#deploy(c, o, p));
      }
    });
  }
@@ -88,20 +52,19 @@ export class Blueprint<ApiType extends ApiTypes> extends Base<ApiType> {
    return this.#tx;
  }

-  #deploy = (constructorOrId: AbiConstructor | string| number, { gasLimit = 0, salt, value = 0 }: BlueprintOptions, params: CodecArg[]): SubmittableExtrinsic<ApiType, BlueprintSubmittableResult<ApiType>> => {
-    const encodedSalt = encodeSalt(salt);
-    const withSalt = this.api.tx.contracts.instantiate.meta.args.length === 5;
-    const encoded = this.abi.findConstructor(constructorOrId).toU8a(params, withSalt ? EMPTY_SALT : encodedSalt);
-    const tx = withSalt
-      ? this.api.tx.contracts.instantiate(value, gasLimit, this.codeHash, encoded, encodedSalt)
-      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-      // @ts-ignore old style with salt included
-      : this.api.tx.contracts.instantiate(value, gasLimit, this.codeHash, encoded);
-
-    return tx.withResultTransform((result: ISubmittableResult) =>
-      new BlueprintSubmittableResult(result, applyOnEvent(result, 'Instantiated', ([record]: EventRecord[]) =>
-        new Contract<ApiType>(this.api, this.abi, record.event.data[1] as AccountId, this._decorateMethod)
-      ))
-    );
+  #deploy = (constructorOrId: AbiConstructor | string | number, { gasLimit = BN_ZERO, salt, value = BN_ZERO }: BlueprintOptions, params: CodecArg[]): SubmittableExtrinsic<ApiType, BlueprintSubmittableResult<ApiType>> => {
+    return this.api.tx.contracts
+      .instantiate(
+        value,
+        gasLimit,
+        this.codeHash,
+        this.abi.findConstructor(constructorOrId).toU8a(params),
+        encodeSalt(salt)
+      )
+      .withResultTransform((result: ISubmittableResult) =>
+        new BlueprintSubmittableResult(result, applyOnEvent(result, ['Instantiated'], ([record]: EventRecord[]) =>
+          new Contract<ApiType>(this.api, this.abi, record.event.data[1] as AccountId, this._decorateMethod)
+        ))
+      );
  }
 }
@@ -3,31 +3,39 @@

 import type { SubmittableExtrinsic } from '@polkadot/api/submittable/types';
 import type { ApiTypes, DecorateMethod } from '@polkadot/api/types';
-import type { EventRecord, Hash } from '@polkadot/types/interfaces';
-import type { AnyJson, ISubmittableResult } from '@polkadot/types/types';
+import type { EventRecord } from '@polkadot/types/interfaces';
+import type { AnyJson, CodecArg, ISubmittableResult } from '@polkadot/types/types';
+import type { AbiConstructor, BlueprintOptions } from '../types';
+import type { MapConstructorExec } from './types';

 import { SubmittableResult } from '@polkadot/api';
 import { ApiBase } from '@polkadot/api/base';
-import { assert, compactAddLength, isWasm, u8aToU8a } from '@polkadot/util';
+import { assert, BN_ZERO, compactAddLength, isUndefined, isWasm, u8aToU8a } from '@polkadot/util';

 import { Abi } from '../Abi';
 import { applyOnEvent } from '../util';
 import { Base } from './Base';
 import { Blueprint } from './Blueprint';
+import { Contract } from './Contract';
+import { createBluePrintTx, encodeSalt } from './util';

 export class CodeSubmittableResult<ApiType extends ApiTypes> extends SubmittableResult {
  public readonly blueprint?: Blueprint<ApiType>;
+  public readonly contract?: Contract<ApiType>;

-  constructor (result: ISubmittableResult, blueprint?: Blueprint<ApiType>) {
+  constructor (result: ISubmittableResult, blueprint?: Blueprint<ApiType>, contract?: Contract<ApiType>) {
    super(result);

    this.blueprint = blueprint;
+    this.contract = contract;
  }
 }

 export class Code<ApiType extends ApiTypes> extends Base<ApiType> {
  public readonly code: Uint8Array;

+  readonly #tx: MapConstructorExec<ApiType> = {};
+
  constructor (api: ApiBase<ApiType>, abi: AnyJson | Abi, wasm: Uint8Array | string | Buffer | null | undefined, decorateMethod: DecorateMethod<ApiType>) {
    super(api, abi, decorateMethod);

@@ -36,18 +44,37 @@ export class Code<ApiType extends ApiTypes> extends Base<ApiType> {
      : u8aToU8a(wasm);

    assert(isWasm(this.code), 'No WASM code provided');
+
+    this.abi.constructors.forEach((c): void => {
+      if (isUndefined(this.#tx[c.method])) {
+        this.#tx[c.method] = createBluePrintTx((o, p) => this.#instantiate(c, o, p));
+      }
+    });
  }

-  /**
-   * @description Deploy the code bundle, creating a Blueprint.
-   */
-  public createBlueprint (): SubmittableExtrinsic<ApiType, CodeSubmittableResult<ApiType>> {
+  public get tx (): MapConstructorExec<ApiType> {
+    return this.#tx;
+  }
+
+  #instantiate = (constructorOrId: AbiConstructor | string | number, { gasLimit = BN_ZERO, salt, value = BN_ZERO }: BlueprintOptions, params: CodecArg[]): SubmittableExtrinsic<ApiType, CodeSubmittableResult<ApiType>> => {
    return this.api.tx.contracts
-      .putCode(compactAddLength(this.code))
+      .instantiateWithCode(
+        value,
+        gasLimit,
+        compactAddLength(this.code),
+        this.abi.findConstructor(constructorOrId).toU8a(params),
+        encodeSalt(salt)
+      )
      .withResultTransform((result: ISubmittableResult) =>
-        new CodeSubmittableResult(result, applyOnEvent(result, 'CodeStored', ([record]: EventRecord[]) =>
-          new Blueprint<ApiType>(this.api, this.abi, record.event.data[0] as Hash, this._decorateMethod)
-        ))
+        new CodeSubmittableResult(result, ...(applyOnEvent(result, ['CodeStored', 'Instantiated'], (records: EventRecord[]) =>
+          records.reduce<[Blueprint<ApiType>?, Contract<ApiType>?]>(([blueprint, contract], { event }) =>
+            this.api.events.contracts.Instantiated.is(event)
+              ? [blueprint, new Contract<ApiType>(this.api, this.abi, event.data[1], this._decorateMethod)]
+              : this.api.events.contracts.CodeStored.is(event)
+                ? [new Blueprint<ApiType>(this.api, this.abi, event.data[0], this._decorateMethod), contract]
+                : [blueprint, contract],
+          [])
+        ) || []))
      );
  }
 }
@@ -4,25 +4,25 @@
 import type { SubmittableExtrinsic } from '@polkadot/api/submittable/types';
 import type { ApiTypes, DecorateMethod } from '@polkadot/api/types';
 import type { Bytes } from '@polkadot/types';
-import type { AccountId, ContractExecResult, EventRecord, Weight } from '@polkadot/types/interfaces';
-import type { AnyJson, CodecArg, ISubmittableResult, Registry } from '@polkadot/types/types';
+import type { AccountId, EventRecord, Weight } from '@polkadot/types/interfaces';
+import type { AnyJson, CodecArg, ISubmittableResult } from '@polkadot/types/types';
 import type { AbiMessage, ContractCallOutcome, ContractOptions, DecodedEvent } from '../types';
-import type { ContractCallResult, ContractCallSend, ContractGeneric, ContractQuery, ContractTx, MapMessageQuery, MapMessageTx } from './types';
-
-import BN from 'bn.js';
+import type { ContractCallResult, ContractCallSend, ContractQuery, ContractTx, MapMessageQuery, MapMessageTx } from './types';

 import { SubmittableResult } from '@polkadot/api';
 import { ApiBase } from '@polkadot/api/base';
-import { assert, bnToBn, isFunction, isUndefined, logger, stringCamelCase } from '@polkadot/util';
+import { createTypeUnsafe } from '@polkadot/types';
+import { assert, BN, BN_HUNDRED, BN_ONE, BN_ZERO, bnToBn, isFunction, isUndefined, logger } from '@polkadot/util';
 import { map } from '@polkadot/x-rxjs/operators';

 import { Abi } from '../Abi';
-import { applyOnEvent, extractOptions, formatData, isOptions } from '../util';
+import { applyOnEvent, extractOptions, isOptions } from '../util';
 import { Base } from './Base';

 // As per Rust, 5 * GAS_PER_SEC
-const MAX_CALL_GAS = new BN(5_000_000_000_000).subn(1);
+const MAX_CALL_GAS = new BN(5_000_000_000_000).isub(BN_ONE);
 const ERROR_NO_CALL = 'Your node does not expose the contracts.call RPC. This is most probably due to a runtime configuration.';
+
 const l = logger('Contract');

 function createQuery <ApiType extends ApiTypes> (fn: (origin: string | AccountId | Uint8Array, options: ContractOptions, params: CodecArg[]) => ContractCallResult<ApiType, ContractCallOutcome>): ContractQuery<ApiType> {
@@ -39,13 +39,6 @@ function createTx <ApiType extends ApiTypes> (fn: (options: ContractOptions, par
      : fn(...extractOptions(options, params));
 }

-function createWithId <T> (fn: (messageOrId: AbiMessage | string | number, options: ContractOptions, params: CodecArg[]) => T): ContractGeneric<ContractOptions, T> {
-  return (messageOrId: AbiMessage | string | number, options: BigInt | string | number | BN | ContractOptions, ...params: CodecArg[]): T =>
-    isOptions(options)
-      ? fn(messageOrId, options, params)
-      : fn(messageOrId, ...extractOptions(options, params));
-}
-
 export class ContractSubmittableResult extends SubmittableResult {
  public readonly contractEvents?: DecodedEvent[];

@@ -56,51 +49,12 @@ export class ContractSubmittableResult extends SubmittableResult {
  }
 }

-// map from a JSON result to current-style ContractExecResult
-function mapExecResult (registry: Registry, json: Record<string, AnyJson>): ContractExecResult {
-  if (!Object.keys(json).some((key) => ['error', 'success'].includes(key))) {
-    return registry.createType('ContractExecResult', json);
-  }
-
-  const from = registry.createType('ContractExecResultTo260', json);
-
-  if (from.isSuccess) {
-    const s = from.asSuccess;
-
-    return registry.createType('ContractExecResult', {
-      gasConsumed: s.gasConsumed,
-      result: {
-        ok: {
-          data: s.data,
-          flags: s.flags
-        }
-      }
-    });
-  }
-
-  // in the old format error has no additional information,
-  // map it as-is with an "unknown" error
-  return registry.createType('ContractExecResult', { result: { err: { other: 'unknown' } } });
-}
-
 export class Contract<ApiType extends ApiTypes> extends Base<ApiType> {
  /**
   * @description The on-chain address for this contract
   */
  public readonly address: AccountId;

-  /**
-   * @deprecated
-   * @description Deprecated. Use `.tx.<messageName>` to send a transaction.
-   */
-  public readonly exec: ContractGeneric<ContractOptions, SubmittableExtrinsic<ApiType>>;
-
-  /**
-   * @deprecated
-   * @description Deprecated. Use `.tx.<messageName>` to send a transaction.
-   */
-  public readonly read: ContractGeneric<ContractOptions, ContractCallSend<ApiType>>;
-
  readonly #query: MapMessageQuery<ApiType> = {};

  readonly #tx: MapMessageTx<ApiType> = {};
@@ -109,18 +63,14 @@ export class Contract<ApiType extends ApiTypes> extends Base<ApiType> {
    super(api, abi, decorateMethod);

    this.address = this.registry.createType('AccountId', address);
-    this.exec = createWithId(this.#exec);
-    this.read = createWithId(this.#read);

    this.abi.messages.forEach((m): void => {
-      const messageName = stringCamelCase(m.identifier);
-
-      if (isUndefined(this.#tx[messageName])) {
-        this.#tx[messageName] = createTx((o, p) => this.#exec(m, o, p));
+      if (isUndefined(this.#tx[m.method])) {
+        this.#tx[m.method] = createTx((o, p) => this.#exec(m, o, p));
      }

-      if (isUndefined(this.#query[messageName])) {
-        this.#query[messageName] = createQuery((f, o, p) => this.#read(m, o, p).send(f));
+      if (isUndefined(this.#query[m.method])) {
+        this.#query[m.method] = createQuery((f, o, p) => this.#read(m, o, p).send(f));
      }
    });
  }
@@ -142,21 +92,27 @@ export class Contract<ApiType extends ApiTypes> extends Base<ApiType> {
  #getGas = (_gasLimit: BigInt | BN | string | number, isCall = false): BN => {
    const gasLimit = bnToBn(_gasLimit);

-    return gasLimit.lten(0)
+    return gasLimit.lte(BN_ZERO)
      ? isCall
        ? MAX_CALL_GAS
        : (this.api.consts.system.blockWeights
          ? this.api.consts.system.blockWeights.maxBlock
          : this.api.consts.system.maximumBlockWeight as Weight
-        ).muln(64).divn(100)
+        ).muln(64).div(BN_HUNDRED)
      : gasLimit;
  }

-  #exec = (messageOrId: AbiMessage | string | number, { gasLimit = 0, value = 0 }: ContractOptions, params: CodecArg[]): SubmittableExtrinsic<ApiType> => {
+  #exec = (messageOrId: AbiMessage | string | number, { gasLimit = BN_ZERO, value = BN_ZERO }: ContractOptions, params: CodecArg[]): SubmittableExtrinsic<ApiType> => {
    return this.api.tx.contracts
-      .call(this.address, value, this.#getGas(gasLimit), this.abi.findMessage(messageOrId).toU8a(params))
+      .call(
+        this.address,
+        value,
+        this.#getGas(gasLimit),
+        this.abi.findMessage(messageOrId).toU8a(params)
+      )
      .withResultTransform((result: ISubmittableResult) =>
-        new ContractSubmittableResult(result, applyOnEvent(result, 'ContractExecution', (records: EventRecord[]) =>
+        // ContractEmitted is the current generation, ContractExecution is the previous generation
+        new ContractSubmittableResult(result, applyOnEvent(result, ['ContractEmitted', 'ContractExecution'], (records: EventRecord[]) =>
          records
            .map(({ event: { data: [, data] } }): DecodedEvent | null => {
              try {
@@ -172,7 +128,7 @@ export class Contract<ApiType extends ApiTypes> extends Base<ApiType> {
      );
  }

-  #read = (messageOrId: AbiMessage | string | number, { gasLimit = 0, value = 0 }: ContractOptions, params: CodecArg[]): ContractCallSend<ApiType> => {
+  #read = (messageOrId: AbiMessage | string | number, { gasLimit = BN_ZERO, value = BN_ZERO }: ContractOptions, params: CodecArg[]): ContractCallSend<ApiType> => {
    assert(this.hasRpcContractsCall, ERROR_NO_CALL);

    const message = this.abi.findMessage(messageOrId);
@@ -180,24 +136,24 @@ export class Contract<ApiType extends ApiTypes> extends Base<ApiType> {
    return {
      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
      send: this._decorateMethod((origin: string | AccountId | Uint8Array) =>
-        this.api.rx.rpc.contracts.call.json({
-          dest: this.address,
-          gasLimit: this.#getGas(gasLimit, true),
-          inputData: message.toU8a(params),
-          origin,
-          value
-        }).pipe(map((json): ContractCallOutcome => {
-          const { debugMessage, gasConsumed, result } = mapExecResult(this.registry, json.toJSON());
-
-          return {
-            debugMessage,
-            gasConsumed,
-            output: result.isOk && message.returnType
-              ? formatData(this.registry, result.asOk.data, message.returnType)
-              : null,
-            result
-          };
-        }))
+        this.api.rx.rpc.contracts
+          .call({
+            dest: this.address,
+            gasLimit: this.#getGas(gasLimit, true),
+            inputData: message.toU8a(params),
+            origin,
+            value
+          })
+          .pipe(
+            map(({ debugMessage, gasConsumed, result }): ContractCallOutcome => ({
+              debugMessage,
+              gasConsumed,
+              output: result.isOk && message.returnType
+                ? createTypeUnsafe(this.registry, message.returnType.type, [result.asOk.data.toU8a(true)], { isPedantic: true })
+                : null,
+              result
+            }))
+          )
      )
    };
  }
@@ -7,13 +7,12 @@ import { TypeRegistry } from '@polkadot/types';
 const registry = new TypeRegistry();

 export const mockApi = {
+  isConnected: true,
  registry,
-  rx: {
-    tx: {
-      contracts: {
-        putCode: (): never => {
-          throw new Error('mock');
-        }
+  tx: {
+    contracts: {
+      instantiateWithCode: (): never => {
+        throw new Error('mock');
      }
    }
  }
@@ -1,11 +1,11 @@
 // Copyright 2017-2021 @polkadot/api-contract authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type BN from 'bn.js';
 import type { SubmittableExtrinsic } from '@polkadot/api/submittable/types';
 import type { ApiTypes, ObsInnerType } from '@polkadot/api/types';
 import type { AccountId } from '@polkadot/types/interfaces';
 import type { CodecArg } from '@polkadot/types/types';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { AbiMessage, BlueprintOptions, ContractCallOutcome, ContractOptions } from '../types';

@@ -30,7 +30,7 @@ export interface ContractGeneric<O, T> {
 }

 export type ContractCallResult<ApiType extends ApiTypes, T> = ApiType extends 'rxjs'
-  ? Observable<Observable<T>>
+  ? Observable<T>
  : Promise<ObsInnerType<Observable<T>>>;

 export interface ContractCallSend<ApiType extends ApiTypes> {
@@ -0,0 +1,40 @@
+// Copyright 2017-2021 @polkadot/api-contract authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { SubmittableResult } from '@polkadot/api';
+import type { SubmittableExtrinsic } from '@polkadot/api/submittable/types';
+import type { ApiTypes } from '@polkadot/api/types';
+import type { CodecArg } from '@polkadot/types/types';
+import type { BN } from '@polkadot/util';
+import type { AbiConstructor, BlueprintOptions } from '../types';
+import type { BlueprintDeploy, ContractGeneric } from './types';
+
+import { Bytes } from '@polkadot/types';
+import { compactAddLength, u8aToU8a } from '@polkadot/util';
+import { randomAsU8a } from '@polkadot/util-crypto';
+
+import { extractOptions, isOptions } from '../util';
+
+export const EMPTY_SALT = new Uint8Array();
+
+export function createBluePrintTx <ApiType extends ApiTypes, R extends SubmittableResult> (fn: (options: BlueprintOptions, params: CodecArg[]) => SubmittableExtrinsic<ApiType, R>): BlueprintDeploy<ApiType> {
+  return (options: BigInt | string | number | BN | BlueprintOptions, ...params: CodecArg[]): SubmittableExtrinsic<ApiType, R> =>
+    isOptions(options)
+      ? fn(options, params)
+      : fn(...extractOptions(options, params));
+}
+
+export function createBluePrintWithId <T> (fn: (constructorOrId: AbiConstructor | string | number, options: BlueprintOptions, params: CodecArg[]) => T): ContractGeneric<BlueprintOptions, T> {
+  return (constructorOrId: AbiConstructor | string | number, options: BigInt | string | number | BN | BlueprintOptions, ...params: CodecArg[]): T =>
+    isOptions(options)
+      ? fn(constructorOrId, options, params)
+      : fn(constructorOrId, ...extractOptions(options, params));
+}
+
+export function encodeSalt (salt: Uint8Array | string | null = randomAsU8a()): Uint8Array {
+  return salt instanceof Bytes
+    ? salt
+    : salt && salt.length
+      ? compactAddLength(u8aToU8a(salt))
+      : EMPTY_SALT;
+}
@@ -30,14 +30,12 @@ async function checkContract (api: ApiPromise, pairs: TestKeyringMap): Promise<v
  // execute
  await contract.tx.inc({ gasLimit: 1234 }, 123).signAndSend(pairs.eve);
  await contract.tx.inc(123, 456, 69).signAndSend(pairs.eve);
-
-  // deprecated
-  await contract.read('get', {}).send(pairs.eve.address);
-  await contract.exec('inc', {}, 123).signAndSend(pairs.dave);
 }

 async function main (): Promise<void> {
-  const api = await ApiPromise.create();
+  const api = await ApiPromise.create({
+    hasher: (data: Uint8Array): Uint8Array => data
+  });
  const pairs = createTestPairs();

  // eslint-disable-next-line @typescript-eslint/no-floating-promises
@@ -0,0 +1,10 @@
+// Copyright 2017-2021 @polkadot/api-contract authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { packageInfo as apiInfo } from '@polkadot/api/packageInfo';
+import { packageInfo as typesInfo } from '@polkadot/types/packageInfo';
+import { detectPackage } from '@polkadot/util';
+
+import { packageInfo } from './packageInfo';
+
+detectPackage(packageInfo, typeof __dirname !== 'undefined' && __dirname, [apiInfo, typesInfo]);
@@ -1,7 +1,9 @@
 // Copyright 2017-2021 @polkadot/api-contract authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-export { Abi } from './Abi';
+import './detectPackage';

-export { Blueprint as BlueprintRx, Code as CodeRx, Contract as ContractRx } from './rx';
+export { Abi } from './Abi';
+export { packageInfo } from './packageInfo';
 export { Blueprint as BlueprintPromise, Code as CodePromise, Contract as ContractPromise } from './promise';
+export { Blueprint as BlueprintRx, Code as CodeRx, Contract as ContractRx } from './rx';
@@ -0,0 +1,6 @@
+// Copyright 2017-2021 @polkadot/api-contract authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+// Auto-generated by @polkadot/dev, do not edit
+
+export const packageInfo = { name: '@polkadot/api-contract', version: '4.16.2' };
@@ -1,12 +1,12 @@
 // Copyright 2017-2021 @polkadot/api-contract authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type BN from 'bn.js';
 import type { ApiBase } from '@polkadot/api/base';
 import type { ApiTypes } from '@polkadot/api/types';
 import type { Text, u64 } from '@polkadot/types';
 import type { ContractExecResultResult, ContractSelector } from '@polkadot/types/interfaces';
 import type { Codec, CodecArg, TypeDef } from '@polkadot/types/types';
+import type { BN } from '@polkadot/util';
 import type { Abi } from '.';

 export interface ContractBase<ApiType extends ApiTypes> {
@@ -39,9 +39,10 @@ export interface AbiMessage {
  isConstructor?: boolean;
  isMutating?: boolean;
  isPayable?: boolean;
+  method: string;
  returnType?: TypeDef | null;
  selector: ContractSelector;
-  toU8a: (params: CodecArg[], additional?: Uint8Array) => Uint8Array;
+  toU8a: (params: CodecArg[]) => Uint8Array;
 }

 export type AbiConstructor = AbiMessage;
@@ -2,27 +2,20 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { SubmittableResult } from '@polkadot/api';
-import type { Raw } from '@polkadot/types';
 import type { EventRecord } from '@polkadot/types/interfaces';
-import type { Codec, CodecArg, Registry, TypeDef } from '@polkadot/types/types';
+import type { CodecArg } from '@polkadot/types/types';
+import type { BN } from '@polkadot/util';
 import type { BlueprintOptions, ContractOptions } from './types';

-import BN from 'bn.js';
-
-import { createTypeUnsafe } from '@polkadot/types/create';
 import { isBigInt, isBn, isNumber, isString } from '@polkadot/util';

-type ContractEvents = 'CodeStored' | 'ContractExecution' | 'Instantiated';
+type ContractEvents = 'CodeStored' | 'ContractEmitted' | 'ContractExecution' | 'Instantiated';

 type TOptions = BlueprintOptions | ContractOptions;

-export function formatData (registry: Registry, data: Raw, { type }: TypeDef): Codec {
-  return createTypeUnsafe(registry, type, [data], { isPedantic: true });
-}
-
-export function applyOnEvent <T> (result: SubmittableResult, type: ContractEvents, fn: (records: EventRecord[]) => T): T | undefined {
+export function applyOnEvent <T> (result: SubmittableResult, types: ContractEvents[], fn: (records: EventRecord[]) => T): T | undefined {
  if (result.isInBlock || result.isFinalized) {
-    const records = result.filterRecords('contracts', type);
+    const records = result.filterRecords('contracts', types);

    if (records.length) {
      return fn(records);
@@ -0,0 +1,6 @@
+[
+  {
+    "info": 6,
+    "type": "bool"
+  }
+]
@@ -6,5 +6,6 @@ export { default as dns } from './dns.json';
 export { default as erc20 } from './erc20.json';
 export { default as erc721 } from './erc721.json';
 export { default as flipper } from './flipper.json';
+export { default as flipperBundle } from './flipper.contract.json';
 export { default as incrementer } from './incrementer.json';
 export { default as multisigPlain } from './multisig_plain.json';
@@ -1,9 +1,16 @@
 {
  "name": "@polkadot/api-derive",
-  "version": "3.7.1",
+  "version": "4.16.2",
+  "type": "module",
  "description": "Common functions used across Polkadot, derived from RPC calls and storage queries.",
  "main": "index.js",
-  "sideEffects": false,
+  "sideEffects": [
+    "./detectPackage.js",
+    "./detectPackage.cjs"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
  "author": "Jaco Greeff <jacogr@gmail.com>",
  "maintainers": [],
  "contributors": [],
@@ -12,17 +19,16 @@
  "bugs": "https://github.com/polkadot-js/api/issues",
  "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-derive#readme",
  "dependencies": {
-    "@babel/runtime": "^7.12.5",
-    "@polkadot/api": "3.7.1",
-    "@polkadot/rpc-core": "3.7.1",
-    "@polkadot/types": "3.7.1",
-    "@polkadot/util": "^5.5.1",
-    "@polkadot/util-crypto": "^5.5.1",
-    "@polkadot/x-rxjs": "^5.5.1",
-    "bn.js": "^4.11.9"
+    "@babel/runtime": "^7.14.6",
+    "@polkadot/api": "4.16.2",
+    "@polkadot/rpc-core": "4.16.2",
+    "@polkadot/types": "4.16.2",
+    "@polkadot/util": "^6.10.1",
+    "@polkadot/util-crypto": "^6.10.1",
+    "@polkadot/x-rxjs": "^6.10.1"
  },
  "devDependencies": {
-    "@polkadot/keyring": "^5.5.1",
-    "@polkadot/rpc-provider": "3.7.1"
+    "@polkadot/keyring": "^6.10.1",
+    "@polkadot/rpc-provider": "4.16.2"
  }
 }
@@ -41,7 +41,11 @@ function parseFlags (address: AccountId | Address | string | null | undefined, [
 */
 export function flags (instanceId: string, api: ApiInterfaceRx): (address?: AccountId | Address | string | null) => Observable<DeriveAccountFlags> {
  return memo(instanceId, (address?: AccountId | Address | string | null): Observable<DeriveAccountFlags> => {
-    const councilSection = api.query.electionsPhragmen ? 'electionsPhragmen' : 'elections';
+    const councilSection = api.query.phragmenElection
+      ? 'phragmenElection'
+      : api.query.electionsPhragmen
+        ? 'electionsPhragmen'
+        : 'elections';

    return combineLatest<FlagsIntermediate>([
      address && api.query[councilSection]?.members
@@ -17,13 +17,25 @@ type BalanceResult = [Balance, Balance, Balance, Balance];

 type Result = [Index, BalanceResult[]];

+type DeriveCustomAccount = ApiInterfaceRx['derive'] & {
+  [custom: string]: {
+    customAccount?: ApiInterfaceRx['query']['balances']['account']
+  }
+}
+
+function zeroBalance (api: ApiInterfaceRx) {
+  return api.registry.createType('Balance');
+}
+
 function getBalance (api: ApiInterfaceRx, [freeBalance, reservedBalance, frozenFee, frozenMisc]: BalanceResult): DeriveBalancesAccountData {
+  const votingBalance = api.registry.createType('Balance', freeBalance.toBn());
+
  return {
    freeBalance,
    frozenFee,
    frozenMisc,
    reservedBalance,
-    votingBalance: api.registry.createType('Balance', freeBalance.toBn())
+    votingBalance
  };
 }

@@ -49,16 +61,32 @@ function queryBalancesFree (api: ApiInterfaceRx, accountId: AccountId): Observab
  ]).pipe(
    map(([freeBalance, reservedBalance, accountNonce]): Result => [
      accountNonce,
-      [[freeBalance, reservedBalance, api.registry.createType('Balance'), api.registry.createType('Balance')]]
+      [[freeBalance, reservedBalance, zeroBalance(api), zeroBalance(api)]]
+    ])
+  );
+}
+
+function querySystemNonce (api: ApiInterfaceRx, accountId: AccountId): Observable<Result> {
+  return api.query.system.accountNonce<Index>(accountId).pipe(
+    map((accountNonce): Result => [
+      accountNonce,
+      [[zeroBalance(api), zeroBalance(api), zeroBalance(api), zeroBalance(api)]]
    ])
  );
 }

 function queryBalancesAccount (api: ApiInterfaceRx, accountId: AccountId, modules: string[] = ['balances']): Observable<Result> {
-  const balances = modules.map((m): QueryableStorageMultiArg<'rxjs'> => [api.query[m].account, accountId]);
+  const balances = modules.map(
+    (m): QueryableStorageMultiArg<'rxjs'> => [
+      (api.derive as DeriveCustomAccount)[m]?.customAccount || api.query[m].account,
+      accountId
+    ]
+  );
+
  const extract = (data: AccountData[]) =>
    data.map(({ feeFrozen, free, miscFrozen, reserved }): BalanceResult => [free, reserved, feeFrozen, miscFrozen]);

+  // NOTE this is for the first case where we do have instances specified
  return isFunction(api.query.system.account)
    ? api.queryMulti<[AccountInfo, ...(AccountData[])]>([[api.query.system.account, accountId], ...balances]).pipe(
      map(([{ nonce }, ...balances]): Result => [nonce, extract(balances)])
@@ -68,16 +96,29 @@ function queryBalancesAccount (api: ApiInterfaceRx, accountId: AccountId, module
    );
 }

-function queryCurrent (api: ApiInterfaceRx, accountId: AccountId): Observable<Result> {
+function querySystemAccount (api: ApiInterfaceRx, accountId: AccountId): Observable<Result> {
  // AccountInfo is current, support old, eg. Edgeware
  return api.query.system.account<AccountInfo | ITuple<[Index, AccountData]>>(accountId).pipe(
    map((infoOrTuple): Result => {
-      const { feeFrozen, free, miscFrozen, reserved } = (infoOrTuple as AccountInfo).nonce
+      const data = (infoOrTuple as AccountInfo).nonce
        ? (infoOrTuple as AccountInfo).data
        : (infoOrTuple as [Index, AccountData])[1];
-      const accountNonce = (infoOrTuple as AccountInfo).nonce || (infoOrTuple as [Index, AccountData])[0];

-      return [accountNonce, [[free, reserved, feeFrozen, miscFrozen]]];
+      const nonce = (infoOrTuple as AccountInfo).nonce || (infoOrTuple as [Index, AccountData])[0];
+
+      if (!data || data.isEmpty) {
+        return [
+          nonce,
+          [[zeroBalance(api), zeroBalance(api), zeroBalance(api), zeroBalance(api)]]
+        ];
+      }
+
+      const { feeFrozen, free, miscFrozen, reserved } = data;
+
+      return [
+        nonce,
+        [[free, reserved, feeFrozen, miscFrozen]]
+      ];
    })
  );
 }
@@ -99,6 +140,10 @@ function queryCurrent (api: ApiInterfaceRx, accountId: AccountId): Observable<Re
 */
 export function account (instanceId: string, api: ApiInterfaceRx): (address: AccountIndex | AccountId | Address | string) => Observable<DeriveBalancesAccount> {
  const balanceInstances = api.registry.getModuleInstances(api.runtimeVersion.specName.toString(), 'balances');
+  const empty: Result = [
+    api.registry.createType('Index'),
+    [[zeroBalance(api), zeroBalance(api), zeroBalance(api), zeroBalance(api)]]
+  ];

  return memo(instanceId, (address: AccountIndex | AccountId | Address | string): Observable<DeriveBalancesAccount> =>
    api.derive.accounts.accountId(address).pipe(
@@ -108,19 +153,17 @@ export function account (instanceId: string, api: ApiInterfaceRx): (address: Acc
            of(accountId),
            balanceInstances
              ? queryBalancesAccount(api, accountId, balanceInstances)
-              : isFunction(api.query.system.account)
-                ? queryCurrent(api, accountId)
-                : isFunction(api.query.balances.account)
+              : isFunction(api.query.system?.account)
+                ? querySystemAccount(api, accountId)
+                : isFunction(api.query.balances?.account)
                  ? queryBalancesAccount(api, accountId)
-                  : queryBalancesFree(api, accountId)
-          ])
-          : of([
-            api.registry.createType('AccountId'),
-            [
-              api.registry.createType('Index'),
-              [[api.registry.createType('Balance'), api.registry.createType('Balance'), api.registry.createType('Balance'), api.registry.createType('Balance')]]
-            ]
+                  : isFunction(api.query.balances?.freeBalance)
+                    ? queryBalancesFree(api, accountId)
+                    : isFunction(api.query.system?.accountNonce)
+                      ? querySystemNonce(api, accountId)
+                      : of(empty)
          ])
+          : of([api.registry.createType('AccountId'), empty])
        )
      ),
      map((result): DeriveBalancesAccount => calcBalances(api, result))
@@ -7,9 +7,7 @@ import type { AccountId, AccountIndex, Address, Balance, BalanceLock, BalanceLoc
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveBalancesAccount, DeriveBalancesAccountData, DeriveBalancesAll, DeriveBalancesAllAccountData } from '../types';

-import BN from 'bn.js';
-
-import { bnMax } from '@polkadot/util';
+import { BN, bnMax, isFunction } from '@polkadot/util';
 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';

@@ -27,6 +25,12 @@ interface AllLocked {
  vestingLocked: Balance
 }

+type DeriveCustomLocks = ApiInterfaceRx['derive'] & {
+  [custom: string]: {
+    customLocks?: ApiInterfaceRx['query']['balances']['locks']
+  }
+}
+
 const VESTING_ID = '0x76657374696e6720';

 function calcLocked (api: ApiInterfaceRx, bestNumber: BlockNumber, locks: (BalanceLock | BalanceLockTo212)[]): AllLocked {
@@ -38,11 +42,11 @@ function calcLocked (api: ApiInterfaceRx, bestNumber: BlockNumber, locks: (Balan
  if (Array.isArray(locks)) {
    // only get the locks that are valid until passed the current block
    lockedBreakdown = (locks as BalanceLockTo212[]).filter(({ until }): boolean => !until || (bestNumber && until.gt(bestNumber)));
-    allLocked = lockedBreakdown.some(({ amount }) => amount.isMax());
+    allLocked = lockedBreakdown.some(({ amount }) => amount && amount.isMax());
    vestingLocked = api.registry.createType('Balance', lockedBreakdown.filter(({ id }) => id.eq(VESTING_ID)).reduce((result: BN, { amount }) => result.iadd(amount), new BN(0)));

    // get the maximum of the locks according to https://github.com/paritytech/substrate/blob/master/srml/balances/src/lib.rs#L699
-    const notAll = lockedBreakdown.filter(({ amount }) => !amount.isMax());
+    const notAll = lockedBreakdown.filter(({ amount }) => amount && !amount.isMax());

    if (notAll.length) {
      lockedBalance = api.registry.createType('Balance', bnMax(...notAll.map(({ amount }): Balance => amount)));
@@ -54,11 +58,10 @@ function calcLocked (api: ApiInterfaceRx, bestNumber: BlockNumber, locks: (Balan

 function calcShared (api: ApiInterfaceRx, bestNumber: BlockNumber, data: DeriveBalancesAccountData, locks: (BalanceLock | BalanceLockTo212)[]): DeriveBalancesAllAccountData {
  const { allLocked, lockedBalance, lockedBreakdown, vestingLocked } = calcLocked(api, bestNumber, locks);
-  const availableBalance = api.registry.createType('Balance', allLocked ? 0 : bnMax(new BN(0), data.freeBalance.sub(lockedBalance)));

  return {
    ...data,
-    availableBalance,
+    availableBalance: api.registry.createType('Balance', allLocked ? 0 : bnMax(new BN(0), data.freeBalance.sub(lockedBalance))),
    lockedBalance,
    lockedBreakdown,
    vestingLocked
@@ -75,8 +78,6 @@ function calcBalances (api: ApiInterfaceRx, [data, bestNumber, [vesting, allLock
  const vestedNow = isStarted ? perBlock.mul(bestNumber.sub(startingBlock)) : new BN(0);
  const vestedBalance = vestedNow.gt(vestingTotal) ? vestingTotal : api.registry.createType('Balance', vestedNow);
  const isVesting = isStarted && !shared.vestingLocked.isZero();
-  const vestedClaimable = api.registry.createType('Balance', isVesting ? shared.vestingLocked.sub(vestingTotal.sub(vestedBalance)) : 0);
-  const vestingEndBlock = api.registry.createType('BlockNumber', isVesting ? vestingTotal.div(perBlock).add(startingBlock) : 0);

  return {
    ...shared,
@@ -85,8 +86,8 @@ function calcBalances (api: ApiInterfaceRx, [data, bestNumber, [vesting, allLock
    additional: allLocks.filter((_, index) => index !== 0).map((l, index) => calcShared(api, bestNumber, data.additional[index], l)),
    isVesting,
    vestedBalance,
-    vestedClaimable,
-    vestingEndBlock,
+    vestedClaimable: api.registry.createType('Balance', isVesting ? shared.vestingLocked.sub(vestingTotal.sub(vestedBalance)) : 0),
+    vestingEndBlock: api.registry.createType('BlockNumber', isVesting ? vestingTotal.div(perBlock).add(startingBlock) : 0),
    vestingPerBlock: perBlock,
    vestingTotal
  };
@@ -112,11 +113,17 @@ function queryOld (api: ApiInterfaceRx, accountId: AccountId): Observable<Result
  );
 }

+const isNonNullable = <T>(nullable: T): nullable is NonNullable<T> => !!nullable;
+
 // current (balances, vesting)
 function queryCurrent (api: ApiInterfaceRx, accountId: AccountId, balanceInstances: string[] = ['balances']): Observable<ResultBalance> {
-  const lockCalls = balanceInstances.map((m) => api.query[m].locks);
+  const lockCalls = balanceInstances.map(
+    (m): ApiInterfaceRx['query']['balances']['locks'] | undefined =>
+      (api.derive as DeriveCustomLocks)[m]?.customLocks || api.query[m as 'balances']?.locks
+  );
+
  const lockEmpty = lockCalls.map((c) => !c);
-  const lockQueries = lockCalls.filter((c) => c).map((c): QueryableStorageMultiArg<'rxjs'> => [c, accountId]);
+  const lockQueries = lockCalls.filter(isNonNullable).map((c): QueryableStorageMultiArg<'rxjs'> => [c, accountId]);

  return (
    api.query.vesting?.vesting
@@ -166,7 +173,7 @@ export function all (instanceId: string, api: ApiInterfaceRx): (address: Account
          ? combineLatest([
            of(account),
            api.derive.chain.bestNumber(),
-            api.query.system?.account || api.query.balances?.account
+            isFunction(api.query.system?.account) || isFunction(api.query.balances?.account)
              ? queryCurrent(api, account.accountId, balanceInstances)
              : queryOld(api, account.accountId)
          ])
@@ -23,7 +23,7 @@ describe('bounties derive', () => {
  let storageKey: (index: number) => StorageKey;
  let defaultBounty: () => Bounty;
  let emptyOption: <T extends Codec> (typeName: keyof InterfaceTypes) => Option<T>;
-  let optionOf: <T extends Codec> (value: T)=> Option<T>;
+  let optionOf: <T extends Codec> (value: T) => Option<T>;
  let bountyIndex: (index: number) => BountyIndex;
  let proposalIndex: (index: number) => ProposalIndex;
  let bytes: (value: string) => Bytes;
@@ -3,7 +3,7 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { DeriveBounties, DeriveCollectiveProposal } from '@polkadot/api-derive/types';
-import type { Bytes, Option, StorageKey } from '@polkadot/types';
+import type { Bytes, Option } from '@polkadot/types';
 import type { Bounty, BountyIndex, ProposalIndex } from '@polkadot/types/interfaces';

 import { memo } from '@polkadot/api-derive/util';
@@ -32,21 +32,25 @@ function parseResult ([maybeBounties, maybeDescriptions, ids, bountyProposals]:
 }

 export function bounties (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveBounties> {
-  const bountyBase = api.query.bounties ? api.query.bounties : api.query.treasury;
+  const bountyBase = api.query.bounties || api.query.treasury;

  return memo(instanceId, (): Observable<DeriveBounties> =>
    combineLatest([
      bountyBase.bountyCount<BountyIndex>(),
-      api.query.council ? api.query.council.proposalCount<ProposalIndex>() : of(0)
+      api.query.council
+        ? api.query.council.proposalCount<ProposalIndex>()
+        : of(0)
    ]).pipe(
      switchMap(() =>
        combineLatest([
-          bountyBase.bounties.keys(),
-          api.derive.council ? api.derive.council.proposals() : of([])
+          bountyBase.bounties.keys<[BountyIndex]>(),
+          api.derive.council
+            ? api.derive.council.proposals()
+            : of([])
        ])
      ),
      switchMap(([keys, proposals]): Observable<Result> => {
-        const ids = (keys as StorageKey<[BountyIndex]>[]).map(({ args: [id] }) => id);
+        const ids = keys.map(({ args: [id] }) => id);

        return combineLatest([
          bountyBase.bounties.multi<Option<Bounty>>(ids),
@@ -3,11 +3,12 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Observable } from '@polkadot/x-rxjs';
+import type { SignedBlockExtended } from '../type/types';

 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { catchError, map } from '@polkadot/x-rxjs/operators';

-import { SignedBlockExtended } from '../type';
+import { createSignedBlockExtended } from '../type';
 import { memo } from '../util';

 /**
@@ -33,7 +34,7 @@ export function getBlock (instanceId: string, api: ApiInterfaceRx): (hash: Uint8
        : of([])
    ]).pipe(
      map(([signedBlock, events, validators]): SignedBlockExtended =>
-        new SignedBlockExtended(api.registry, signedBlock, events, validators)
+        createSignedBlockExtended(api.registry, signedBlock, events, validators)
      ),
      catchError((): Observable<undefined> =>
        // where rpc.chain.getHeader throws, we will land here - it can happen that
@@ -3,11 +3,12 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Observable } from '@polkadot/x-rxjs';
+import type { HeaderExtended } from '../type/types';

 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { catchError, map } from '@polkadot/x-rxjs/operators';

-import { HeaderExtended } from '../type';
+import { createHeaderExtended } from '../type';
 import { memo } from '../util';

 /**
@@ -33,7 +34,7 @@ export function getHeader (instanceId: string, api: ApiInterfaceRx): (hash: Uint
        : of([])
    ]).pipe(
      map(([header, validators]): HeaderExtended =>
-        new HeaderExtended(api.registry, header, validators)
+        createHeaderExtended(header.registry, header, validators)
      ),
      catchError((): Observable<undefined> =>
        // where rpc.chain.getHeader throws, we will land here - it can happen that
@@ -2,13 +2,15 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
-import type { AccountId, EventRecord, SignedBlock } from '@polkadot/types/interfaces';
+import type { Vec } from '@polkadot/types';
+import type { EventRecord, SignedBlock } from '@polkadot/types/interfaces';
 import type { Observable } from '@polkadot/x-rxjs';
+import type { HeaderExtended, SignedBlockExtended } from '../type/types';

 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';

-import { SignedBlockExtended } from '../type';
+import { createSignedBlockExtended } from '../type';
 import { memo } from '../util';

 /**
@@ -18,17 +20,17 @@ import { memo } from '../util';
 export function subscribeNewBlocks (instanceId: string, api: ApiInterfaceRx): () => Observable<SignedBlockExtended> {
  return memo(instanceId, (): Observable<SignedBlockExtended> =>
    api.derive.chain.subscribeNewHeads().pipe(
-      switchMap((header): Observable<[SignedBlock, EventRecord[], AccountId[] | undefined]> => {
-        const blockHash = header.hash;
+      switchMap((header): Observable<[SignedBlock, Vec<EventRecord>, HeaderExtended]> => {
+        const blockHash = header.createdAtHash || header.hash;

        return combineLatest(
          api.rpc.chain.getBlock(blockHash),
          api.query.system.events.at(blockHash),
-          of(header.validators)
+          of(header)
        );
      }),
-      map(([block, events, validators]) =>
-        new SignedBlockExtended(api.registry, block, events, validators)
+      map(([block, events, header]) =>
+        createSignedBlockExtended(block.registry, block, events, header.validators)
      )
    )
  );
@@ -3,11 +3,12 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Observable } from '@polkadot/x-rxjs';
+import type { HeaderExtended } from '../type/types';

 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { map } from '@polkadot/x-rxjs/operators';

-import { HeaderExtended } from '../type';
+import { createHeaderExtended } from '../type';
 import { memo } from '../util';

 /**
@@ -29,10 +30,13 @@ export function subscribeNewHeads (instanceId: string, api: ApiInterfaceRx): ()
      api.rpc.chain.subscribeNewHeads(),
      api.query.session
        ? api.query.session.validators()
-        : of([])
+        : of(undefined)
    ]).pipe(
-      map(([header, validators]): HeaderExtended =>
-        new HeaderExtended(api.registry, header, validators)
-      )
-    ));
+      map(([header, validators]): HeaderExtended => {
+        header.createdAtHash = header.hash;
+
+        return createHeaderExtended(header.registry, header, validators);
+      })
+    )
+  );
 }
@@ -13,6 +13,8 @@ import { catchError, map, switchMap } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

+type Collective = 'council' | 'membership' | 'technicalCommittee';
+
 type Result = [(Hash | Uint8Array | string)[], (Option<Proposal> | null)[], Option<Votes>[]];

 function parse (api: ApiInterfaceRx, [hashes, proposals, votes]: Result): DeriveCollectiveProposal[] {
@@ -29,7 +31,7 @@ function parse (api: ApiInterfaceRx, [hashes, proposals, votes]: Result): Derive
    .filter((proposal): proposal is DeriveCollectiveProposal => !!proposal);
 }

-function _proposalsFrom (instanceId: string, api: ApiInterfaceRx, section: 'council' | 'technicalCommittee' = 'council'): (hashes: (Hash | Uint8Array | string)[]) => Observable<DeriveCollectiveProposal[]> {
+function _proposalsFrom (instanceId: string, api: ApiInterfaceRx, section: Collective): (hashes: (Hash | Uint8Array | string)[]) => Observable<DeriveCollectiveProposal[]> {
  return memo(instanceId, (hashes: (Hash | Uint8Array | string)[]): Observable<DeriveCollectiveProposal[]> =>
    (isFunction(api.query[section]?.proposals) && hashes.length
      ? combineLatest<Result>([
@@ -49,19 +51,19 @@ function _proposalsFrom (instanceId: string, api: ApiInterfaceRx, section: 'coun
  );
 }

-export function proposals (instanceId: string, api: ApiInterfaceRx, section: 'council' | 'technicalCommittee' = 'council'): () => Observable<DeriveCollectiveProposal[]> {
+export function proposals (instanceId: string, api: ApiInterfaceRx, section: Collective): () => Observable<DeriveCollectiveProposal[]> {
  const proposalsFrom = _proposalsFrom(instanceId, api, section);

  return memo(instanceId, (): Observable<DeriveCollectiveProposal[]> =>
    isFunction(api.query[section]?.proposals)
-      ? api.query[section].proposals().pipe(
+      ? api.query[section as 'council'].proposals().pipe(
        switchMap(proposalsFrom)
      )
      : of([] as DeriveCollectiveProposal[])
  );
 }

-export function proposal (instanceId: string, api: ApiInterfaceRx, section: 'council' | 'technicalCommittee' = 'council'): (hash: Hash | Uint8Array | string) => Observable<DeriveCollectiveProposal | null> {
+export function proposal (instanceId: string, api: ApiInterfaceRx, section: Collective): (hash: Hash | Uint8Array | string) => Observable<DeriveCollectiveProposal | null> {
  const proposalsFrom = _proposalsFrom(instanceId, api, section);

  return memo(instanceId, (hash: Hash | Uint8Array | string): Observable<DeriveCollectiveProposal | null> =>
@@ -2,11 +2,10 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveContractFees } from '../types';

-import BN from 'bn.js';
-
 import { of } from '@polkadot/x-rxjs';
 import { map } from '@polkadot/x-rxjs/operators';

@@ -10,9 +10,9 @@ import { proposal as collectiveProposal, proposals as collectiveProposals } from
 import { memo } from '../util';

 export function proposal (instanceId: string, api: ApiInterfaceRx): (hash: Hash | Uint8Array | string) => Observable<DeriveCollectiveProposal | null> {
-  return memo(instanceId, collectiveProposal(instanceId, api));
+  return memo(instanceId, collectiveProposal(instanceId, api, 'council'));
 }

 export function proposals (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveCollectiveProposal[]> {
-  return memo(instanceId, collectiveProposals(instanceId, api));
+  return memo(instanceId, collectiveProposals(instanceId, api, 'council'));
 }
@@ -3,7 +3,7 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Vec } from '@polkadot/types';
-import type { AccountId, Balance } from '@polkadot/types/interfaces';
+import type { AccountId, Balance, Voter } from '@polkadot/types/interfaces';
 import type { ITuple } from '@polkadot/types/types';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveCouncilVote, DeriveCouncilVotes } from '../types';
@@ -13,18 +13,25 @@ import { map } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

+// Voter is current tuple is 2.x-era
+type VoteEntry = Voter | ITuple<[Balance, Vec<AccountId>]>;
+
+function isVoter (value: VoteEntry): value is Voter {
+  return !Array.isArray(value);
+}
+
 function retrieveStakeOf (api: ApiInterfaceRx): Observable<[AccountId, Balance][]> {
-  return (api.query.electionsPhragmen || api.query.elections).stakeOf.entries<Balance>().pipe(
+  return (api.query.phragmenElection || api.query.electionsPhragmen || api.query.elections).stakeOf.entries<Balance, [AccountId]>().pipe(
    map((entries) =>
-      entries.map(([key, stake]) => [key.args[0] as AccountId, stake])
+      entries.map(([{ args: [accountId] }, stake]) => [accountId, stake])
    )
  );
 }

 function retrieveVoteOf (api: ApiInterfaceRx): Observable<[AccountId, AccountId[]][]> {
-  return (api.query.electionsPhragmen || api.query.elections).votesOf.entries<Vec<AccountId>>().pipe(
+  return (api.query.phragmenElection || api.query.electionsPhragmen || api.query.elections).votesOf.entries<Vec<AccountId>, [AccountId]>().pipe(
    map((entries) =>
-      entries.map(([key, votes]) => [key.args[0] as AccountId, votes])
+      entries.map(([{ args: [accountId] }, votes]) => [accountId, votes])
    )
  );
 }
@@ -54,20 +61,23 @@ function retrievePrev (api: ApiInterfaceRx): Observable<DeriveCouncilVotes> {
 }

 function retrieveCurrent (api: ApiInterfaceRx): Observable<DeriveCouncilVotes> {
-  const elections = (api.query.electionsPhragmen || api.query.elections);
+  const elections = (api.query.phragmenElection || api.query.electionsPhragmen || api.query.elections);

-  return elections.voting.entries<ITuple<[Balance, Vec<AccountId>]>>().pipe(
+  return elections.voting.entries<VoteEntry, [AccountId]>().pipe(
    map((entries): DeriveCouncilVotes =>
-      entries.map(([key, [stake, votes]]): [AccountId, DeriveCouncilVote] =>
-        [key.args[0] as AccountId, { stake, votes }]
-      )
+      entries.map(([{ args: [accountId] }, value]): [AccountId, DeriveCouncilVote] => [
+        accountId,
+        isVoter(value)
+          ? { stake: value.stake, votes: value.votes }
+          : { stake: value[0], votes: value[1] }
+      ])
    )
  );
 }

 export function votes (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveCouncilVotes> {
  return memo(instanceId, (): Observable<DeriveCouncilVotes> =>
-    (api.query.electionsPhragmen || api.query.elections).stakeOf
+    (api.query.phragmenElection || api.query.electionsPhragmen || api.query.elections).stakeOf
      ? retrievePrev(api)
      : retrieveCurrent(api)
  );
@@ -51,7 +51,7 @@ function schedulerEntries (api: ApiInterfaceRx): Observable<[BlockNumber[], Opti
      api.query.scheduler.agenda.keys()
    ),
    switchMap((keys) => {
-      const blockNumbers = keys.map((key) => key.args[0]);
+      const blockNumbers = keys.map(({ args: [blockNumber] }) => blockNumber);

      return combineLatest([
        of(blockNumbers),
@@ -4,11 +4,10 @@
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Option } from '@polkadot/types';
 import type { AccountId, ReferendumInfo, ReferendumInfoFinished, ReferendumInfoTo239, Vote, VotingDelegating, VotingDirect, VotingDirectVote } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveDemocracyLock } from '../types';

-import BN from 'bn.js';
-
 import { BN_ZERO, isUndefined } from '@polkadot/util';
 import { of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';
@@ -51,7 +51,7 @@ function parse ([proposals, images, optDepositors]: Result): DeriveProposal[] {

 export function proposals (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveProposal[]> {
  return memo(instanceId, (): Observable<DeriveProposal[]> =>
-    api.query.democracy?.publicProps && api.query.democracy?.preimages
+    isFunction(api.query.democracy?.publicProps) && isFunction(api.query.democracy?.preimages)
      ? api.query.democracy.publicProps<Proposals>().pipe(
        switchMap((proposals) =>
          combineLatest([
@@ -3,10 +3,9 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { ReferendumIndex } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';

-import BN from 'bn.js';
-
 import { of } from '@polkadot/x-rxjs';
 import { map } from '@polkadot/x-rxjs/operators';

@@ -4,11 +4,10 @@
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Option, Vec } from '@polkadot/types';
 import type { AccountId, ReferendumInfo, ReferendumInfoTo239, Vote, Voting, VotingDelegating, VotingDirectVote } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveBalancesAccount, DeriveReferendum, DeriveReferendumVote, DeriveReferendumVotes } from '../types';

-import BN from 'bn.js';
-
 import { isFunction } from '@polkadot/util';
 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';
@@ -67,9 +66,9 @@ function extractVotes (mapped: [AccountId, Voting][], referendumId: BN): DeriveR
 }

 function votesCurr (api: ApiInterfaceRx, referendumId: BN): Observable<DeriveReferendumVote[]> {
-  return api.query.democracy.votingOf.entries<Voting>().pipe(
+  return api.query.democracy.votingOf.entries<Voting, [AccountId]>().pipe(
    map((allVoting): DeriveReferendumVote[] => {
-      const mapped = allVoting.map(([key, voting]): [AccountId, Voting] => [key.args[0], voting]);
+      const mapped = allVoting.map(([{ args: [accountId] }, voting]): [AccountId, Voting] => [accountId, voting]);
      const votes = extractVotes(mapped, referendumId);
      const delegations = mapped
        .filter(([, voting]) => voting.isDelegating)
@@ -2,10 +2,9 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';

-import BN from 'bn.js';
-
 import { bnSqrt } from '@polkadot/util';
 import { map } from '@polkadot/x-rxjs/operators';

@@ -1,9 +1,9 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type BN from 'bn.js';
 import type { Vec } from '@polkadot/types';
 import type { AccountId, Balance, BlockNumber, Hash, PropIndex, Proposal, ReferendumIndex, ReferendumInfoTo239, ReferendumStatus, Vote, VoteThreshold } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';

 export interface DeriveDemocracyLock {
  balance: Balance;
@@ -7,9 +7,7 @@ import type { AccountId, Balance, BlockNumber, PreimageStatus, Proposal, Referen
 import type { ITuple } from '@polkadot/types/types';
 import type { DeriveProposalImage, DeriveReferendum, DeriveReferendumVote, DeriveReferendumVotes, DeriveReferendumVoteState } from '../types';

-import BN from 'bn.js';
-
-import { bnSqrt } from '@polkadot/util';
+import { BN, bnSqrt } from '@polkadot/util';

 type PreimageInfo = [Bytes, AccountId, Balance, BlockNumber];
 type OldPreimage = ITuple<PreimageInfo>;
@@ -0,0 +1,11 @@
+// Copyright 2017-2021 @polkadot/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { packageInfo as apiInfo } from '@polkadot/api/packageInfo';
+import { packageInfo as coreInfo } from '@polkadot/rpc-core/packageInfo';
+import { packageInfo as typesInfo } from '@polkadot/types/packageInfo';
+import { detectPackage } from '@polkadot/util';
+
+import { packageInfo } from './packageInfo';
+
+detectPackage(packageInfo, typeof __dirname !== 'undefined' && __dirname, [apiInfo, coreInfo, typesInfo]);
@@ -3,7 +3,7 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { u32, Vec } from '@polkadot/types';
-import type { AccountId, Balance, BlockNumber } from '@polkadot/types/interfaces';
+import type { AccountId, Balance, BlockNumber, SeatHolder } from '@polkadot/types/interfaces';
 import type { ITuple } from '@polkadot/types/types';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveElectionsInfo } from './types';
@@ -12,14 +12,43 @@ import { map } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

-function sortAccounts ([, balanceA]: ITuple<[AccountId, Balance]>, [, balanceB]: ITuple<[AccountId, Balance]>): number {
+// SeatHolder is current tuple is 2.x-era Substrate
+type Member = SeatHolder | ITuple<[AccountId, Balance]>;
+
+type Candidate = AccountId | ITuple<[AccountId, Balance]>;
+
+function isSeatHolder (value: Member): value is SeatHolder {
+  return !Array.isArray(value);
+}
+
+function isCandidateTuple (value: Candidate): value is ITuple<[AccountId, Balance]> {
+  return Array.isArray(value);
+}
+
+function getAccountTuple (value: Member): [AccountId, Balance] {
+  return isSeatHolder(value)
+    ? [value.who, value.stake]
+    : value;
+}
+
+function getCandidate (value: Candidate): AccountId {
+  return isCandidateTuple(value)
+    ? value[0]
+    : value;
+}
+
+function sortAccounts ([, balanceA]: [AccountId, Balance], [, balanceB]: [AccountId, Balance]): number {
  return balanceB.cmp(balanceA);
 }

 function queryElections (api: ApiInterfaceRx): Observable<DeriveElectionsInfo> {
-  const section = api.query.electionsPhragmen ? 'electionsPhragmen' : 'elections';
+  const section = api.query.phragmenElection
+    ? 'phragmenElection'
+    : api.query.electionsPhragmen
+      ? 'electionsPhragmen'
+      : 'elections';

-  return api.queryMulti<[Vec<AccountId>, Vec<AccountId>, Vec<ITuple<[AccountId, Balance]>>, Vec<ITuple<[AccountId, Balance]>>]>([
+  return api.queryMulti<[Vec<AccountId>, Vec<Candidate>, Vec<Member>, Vec<Member>]>([
    api.query.council.members,
    api.query[section].candidates,
    api.query[section].members,
@@ -28,13 +57,13 @@ function queryElections (api: ApiInterfaceRx): Observable<DeriveElectionsInfo> {
    map(([councilMembers, candidates, members, runnersUp]): DeriveElectionsInfo => ({
      candidacyBond: api.consts[section].candidacyBond as Balance,
      candidateCount: api.registry.createType('u32', candidates.length),
-      candidates,
+      candidates: candidates.map(getCandidate),
      desiredRunnersUp: api.consts[section].desiredRunnersUp as u32,
      desiredSeats: api.consts[section].desiredMembers as u32,
      members: members.length
-        ? members.sort(sortAccounts)
+        ? members.map(getAccountTuple).sort(sortAccounts)
        : councilMembers.map((accountId): [AccountId, Balance] => [accountId, api.registry.createType('Balance')]),
-      runnersUp: runnersUp.sort(sortAccounts),
+      runnersUp: runnersUp.map(getAccountTuple).sort(sortAccounts),
      termDuration: api.consts[section].termDuration as BlockNumber,
      votingBond: api.consts[section].votingBond as Balance
    }))
@@ -39,6 +39,10 @@ describe('derive', (): void => {
      api.isReady.subscribe(() => done());
    });

+    afterAll(async () => {
+      await api.disconnect();
+    });
+
    testFunction(api)('accounts', 'idAndIndex', []);
    testFunction(api)('accounts', 'idToIndex', []);
    testFunction(api)('accounts', 'indexes', []);
@@ -80,7 +84,11 @@ describe('derive', (): void => {
    });

    beforeAll((done): void => {
-      api.isReady.subscribe((): void => done());
+      api.isReady.subscribe(() => done());
+    });
+
+    afterAll(async () => {
+      await api.disconnect();
    });

    // override
@@ -1,6 +1,8 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

+import './detectPackage';
+
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { AnyFunction } from '@polkadot/types/types';
 import type { Observable } from '@polkadot/x-rxjs';
@@ -14,6 +16,7 @@ import * as council from './council';
 import * as democracy from './democracy';
 import * as elections from './elections';
 import * as imOnline from './imOnline';
+import * as membership from './membership';
 import * as parachains from './parachains';
 import * as session from './session';
 import * as society from './society';
@@ -22,9 +25,10 @@ import * as technicalCommittee from './technicalCommittee';
 import * as treasury from './treasury';
 import * as tx from './tx';

+export { packageInfo } from './packageInfo';
 export * from './type';

-export const derive = { accounts, balances, bounties, chain, contracts, council, democracy, elections, imOnline, parachains, session, society, staking, technicalCommittee, treasury, tx };
+export const derive = { accounts, balances, bounties, chain, contracts, council, democracy, elections, imOnline, membership, parachains, session, society, staking, technicalCommittee, treasury, tx };

 type DeriveSection<Section> = {
  [Method in keyof Section]: Section[Method] extends AnyFunction
@@ -44,8 +48,9 @@ const deriveAvail: Record<string, string[]> = {
  contracts: ['contracts'],
  council: ['council'],
  democracy: ['democracy'],
-  elections: ['electionsPhragmen', 'elections'],
+  elections: ['phragmenElection', 'electionsPhragmen', 'elections'],
  imOnline: ['imOnline'],
+  membership: ['membership'],
  parachains: ['parachains', 'registrar'],
  session: ['session'],
  society: ['society'],
@@ -0,0 +1,4 @@
+// Copyright 2017-2021 @polkadot/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+export * from './proposals';
@@ -0,0 +1,13 @@
+// Copyright 2017-2021 @polkadot/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { ApiInterfaceRx } from '@polkadot/api/types';
+import type { Observable } from '@polkadot/x-rxjs';
+import type { DeriveCollectiveProposal } from '../types';
+
+import { proposals as collectiveProposals } from '../collective';
+import { memo } from '../util';
+
+export function proposals (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveCollectiveProposal[]> {
+  return memo(instanceId, collectiveProposals(instanceId, api, 'membership'));
+}
@@ -0,0 +1,6 @@
+// Copyright 2017-2021 @polkadot/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+// Auto-generated by @polkadot/dev, do not edit
+
+export const packageInfo = { name: '@polkadot/api-derive', version: '4.16.2' };
@@ -13,7 +13,7 @@ import { map } from '@polkadot/x-rxjs/operators';
 import { memo } from '../util';

 // parse into Indexes
-function parse ([activeEra, activeEraStart, currentEra, currentIndex, validatorCount]: [EraIndex, Option<Moment>, EraIndex, SessionIndex, u32]): DeriveSessionIndexes {
+function parse ([currentIndex, activeEra, activeEraStart, currentEra, validatorCount]: [SessionIndex, EraIndex, Option<Moment>, EraIndex, u32]): DeriveSessionIndexes {
  return {
    activeEra,
    activeEraStart,
@@ -24,42 +24,57 @@ function parse ([activeEra, activeEraStart, currentEra, currentIndex, validatorC
 }

 // query based on latest
-function query (api: ApiInterfaceRx): Observable<DeriveSessionIndexes> {
-  return api.queryMulti<[Option<ActiveEraInfo>, Option<EraIndex>, SessionIndex, u32]>([
+function queryStaking (api: ApiInterfaceRx): Observable<DeriveSessionIndexes> {
+  return api.queryMulti<[SessionIndex, Option<ActiveEraInfo>, Option<EraIndex>, u32]>([
+    api.query.session.currentIndex,
    api.query.staking.activeEra,
    api.query.staking.currentEra,
-    api.query.session.currentIndex,
    api.query.staking.validatorCount
  ]).pipe(
-    map(([activeOpt, currentEra, currentIndex, validatorCount]): DeriveSessionIndexes => {
+    map(([currentIndex, activeOpt, currentEra, validatorCount]): DeriveSessionIndexes => {
      const { index, start } = activeOpt.unwrapOrDefault();

      return parse([
+        currentIndex,
        index,
        start,
        currentEra.unwrapOrDefault(),
-        currentIndex,
        validatorCount
      ]);
    })
  );
 }

+// query based on latest
+function querySession (api: ApiInterfaceRx): Observable<DeriveSessionIndexes> {
+  return api.query.session.currentIndex().pipe(
+    map((currentIndex): DeriveSessionIndexes => parse([
+      currentIndex,
+      api.registry.createType('EraIndex'),
+      api.registry.createType('Option<Moment>'),
+      api.registry.createType('EraIndex'),
+      api.registry.createType('u32')
+    ]))
+  );
+}
+
 // empty set when none is available
 function empty (api: ApiInterfaceRx): Observable<DeriveSessionIndexes> {
  return of(parse([
+    api.registry.createType('SessionIndex', 1),
    api.registry.createType('EraIndex'),
    api.registry.createType('Option<Moment>'),
    api.registry.createType('EraIndex'),
-    api.registry.createType('SessionIndex', 1),
    api.registry.createType('u32')
  ]));
 }

 export function indexes (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveSessionIndexes> {
  return memo(instanceId, (): Observable<DeriveSessionIndexes> =>
-    api.query.session && api.query.staking
-      ? query(api)
+    api.query.session
+      ? api.query.staking
+        ? queryStaking(api)
+        : querySession(api)
      : empty(api)
  );
 }
@@ -2,71 +2,31 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
-import type { u64 } from '@polkadot/types';
-import type { SessionIndex } from '@polkadot/types/interfaces';
 import type { Observable } from '@polkadot/x-rxjs';
-import type { DeriveSessionIndexes, DeriveSessionInfo } from '../types';
+import type { DeriveSessionInfo } from '../types';

 import { map } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

-type ResultType = [boolean, u64, SessionIndex];
-type Result = [ResultType, DeriveSessionIndexes];
-
-function createDerive (api: ApiInterfaceRx, [[hasBabe, epochDuration, sessionsPerEra], { activeEra, activeEraStart, currentEra, currentIndex, validatorCount }]: Result): DeriveSessionInfo {
-  return {
-    activeEra,
-    activeEraStart,
-    currentEra,
-    currentIndex,
-    eraLength: api.registry.createType('BlockNumber', sessionsPerEra.mul(epochDuration)),
-    isEpoch: hasBabe,
-    sessionLength: epochDuration,
-    sessionsPerEra,
-    validatorCount
-  };
-}
-
-function queryAura (api: ApiInterfaceRx): Observable<DeriveSessionInfo> {
-  return api.derive.session.indexes().pipe(
-    map((indexes): DeriveSessionInfo =>
-      createDerive(api, [
-        [
-          false,
-          api.registry.createType('u64', 1),
-          // we may have aura without staking (permissioned)
-          api.consts.staking?.sessionsPerEra || api.registry.createType('SessionIndex', 1)
-        ],
-        indexes
-      ])
-    )
-  );
-}
-
-function queryBabe (api: ApiInterfaceRx): Observable<DeriveSessionInfo> {
-  return api.derive.session.indexes().pipe(
-    map((indexes) =>
-      createDerive(api, [
-        [
-          true,
-          api.consts.babe.epochDuration,
-          // we may have babe without staking (permissioned)
-          api.consts.staking?.sessionsPerEra || api.registry.createType('SessionIndex', 1)
-        ],
-        indexes
-      ])
-    )
-  );
-}
-
 /**
 * @description Retrieves all the session and era query and calculates specific values on it as the length of the session and eras
 */
 export function info (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveSessionInfo> {
  return memo(instanceId, (): Observable<DeriveSessionInfo> =>
-    api.consts.babe
-      ? queryBabe(api)
-      : queryAura(api)
+    api.derive.session.indexes().pipe(
+      map((indexes) => {
+        const sessionLength = api.consts?.babe?.epochDuration || api.registry.createType('u64', 1);
+        const sessionsPerEra = api.consts?.staking?.sessionsPerEra || api.registry.createType('SessionIndex', 1);
+
+        return {
+          ...indexes,
+          eraLength: api.registry.createType('BlockNumber', sessionsPerEra.mul(sessionLength)),
+          isEpoch: !!api.query.babe,
+          sessionLength,
+          sessionsPerEra
+        };
+      })
+    )
  );
 }
@@ -44,7 +44,7 @@ function queryBabe (api: ApiInterfaceRx): Observable<[DeriveSessionInfo, ResultS
      combineLatest([
        of(info),
        // we may have no staking, but have babe (permissioned)
-        api.query.staking
+        api.query.staking?.erasStartSessionIndex
          ? api.queryMulti<ResultSlots>([
            api.query.babe.currentSlot,
            api.query.babe.epochIndex,
@@ -69,7 +69,7 @@ function queryBabe (api: ApiInterfaceRx): Observable<[DeriveSessionInfo, ResultS
 */
 export function progress (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveSessionProgress> {
  return memo(instanceId, (): Observable<DeriveSessionProgress> =>
-    api.consts.babe
+    api.query.babe
      ? queryBabe(api).pipe(
        map(([info, slots]: [DeriveSessionInfo, ResultSlotsFlat]): DeriveSessionProgress =>
          createDerive(api, info, slots)
@@ -2,9 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
-import type { bool, Option, Vec } from '@polkadot/types';
-import type { AccountId, Balance, BlockNumber, SocietyVote, StrikeCount, VouchingStatus } from '@polkadot/types/interfaces';
-import type { ITuple } from '@polkadot/types/types';
+import type { AccountId } from '@polkadot/types/interfaces';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveSocietyMember } from '../types';

@@ -12,28 +10,13 @@ import { map } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

-type Result = [Vec<ITuple<[BlockNumber, Balance]>>, StrikeCount, Option<SocietyVote>, bool, Option<VouchingStatus>];
-
 /**
 * @description Get the member info for a society
 */
 export function member (instanceId: string, api: ApiInterfaceRx): (accountId: AccountId) => Observable<DeriveSocietyMember> {
  return memo(instanceId, (accountId: AccountId): Observable<DeriveSocietyMember> =>
-    api.queryMulti<Result>([
-      [api.query.society.payouts, accountId],
-      [api.query.society.strikes, accountId],
-      [api.query.society.defenderVotes, accountId],
-      [api.query.society.suspendedMembers, accountId],
-      [api.query.society.vouching, accountId]
-    ]).pipe(
-      map(([payouts, strikes, defenderVotes, suspended, vouching]: Result): DeriveSocietyMember => ({
-        accountId,
-        isSuspended: suspended.isTrue,
-        payouts,
-        strikes,
-        vote: defenderVotes.unwrapOr(undefined),
-        vouching: vouching.unwrapOr(undefined)
-      }))
+    api.derive.society._members([accountId]).pipe(
+      map(([result]) => result)
    )
  );
 }
@@ -2,28 +2,51 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
-import type { AccountId } from '@polkadot/types/interfaces';
+import type { bool, Option, Vec } from '@polkadot/types';
+import type { AccountId, Balance, BlockNumber, SocietyVote, StrikeCount, VouchingStatus } from '@polkadot/types/interfaces';
+import type { ITuple } from '@polkadot/types/types';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveSocietyMember } from '../types';

-import { combineLatest } from '@polkadot/x-rxjs';
-import { switchMap } from '@polkadot/x-rxjs/operators';
+import { combineLatest, of } from '@polkadot/x-rxjs';
+import { map, switchMap } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

+type Result = [AccountId[], Vec<ITuple<[BlockNumber, Balance]>>[], StrikeCount[], Option<SocietyVote>[], bool[], Option<VouchingStatus>[]];
+
+export function _members (instanceId: string, api: ApiInterfaceRx): (accountIds: AccountId[]) => Observable<DeriveSocietyMember[]> {
+  return memo(instanceId, (accountIds: AccountId[]): Observable<DeriveSocietyMember[]> =>
+    combineLatest<Result>([
+      of(accountIds),
+      api.query.society.payouts.multi(accountIds),
+      api.query.society.strikes.multi(accountIds),
+      api.query.society.defenderVotes.multi(accountIds),
+      api.query.society.suspendedMembers.multi(accountIds),
+      api.query.society.vouching.multi(accountIds)
+    ]).pipe(
+      map(([accountIds, payouts, strikes, defenderVotes, suspended, vouching]) =>
+        accountIds.map((accountId, index) => ({
+          accountId,
+          isDefenderVoter: defenderVotes[index].isSome,
+          isSuspended: suspended[index].isTrue,
+          payouts: payouts[index],
+          strikes: strikes[index],
+          vote: defenderVotes[index].unwrapOr(undefined),
+          vouching: vouching[index].unwrapOr(undefined)
+        }))
+      )
+    )
+  );
+}
+
 /**
 * @description Get the member info for a society
 */
 export function members (instanceId: string, api: ApiInterfaceRx): () => Observable<DeriveSocietyMember[]> {
  return memo(instanceId, (): Observable<DeriveSocietyMember[]> =>
    api.query.society.members<AccountId[]>().pipe(
-      switchMap((members): Observable<DeriveSocietyMember[]> =>
-        combineLatest(
-          members.map((accountId): Observable<DeriveSocietyMember> =>
-            api.derive.society.member(accountId)
-          )
-        )
-      )
+      switchMap((members) => api.derive.society._members(members))
    )
  );
 }
@@ -5,9 +5,7 @@ import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Balance, StakingLedger, UnlockChunk } from '@polkadot/types/interfaces';
 import type { DeriveSessionInfo, DeriveStakingAccount, DeriveStakingKeys, DeriveStakingQuery, DeriveUnlocking } from '../types';

-import BN from 'bn.js';
-
-import { BN_ZERO } from '@polkadot/util';
+import { BN, BN_ZERO } from '@polkadot/util';
 import { combineLatest, Observable } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';

@@ -3,7 +3,7 @@

 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { StorageKey } from '@polkadot/types';
-import type { EraIndex, Exposure } from '@polkadot/types/interfaces';
+import type { AccountId, EraIndex, Exposure } from '@polkadot/types/interfaces';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveEraExposure, DeriveEraNominatorExposure, DeriveEraValidatorExposure } from '../types';

@@ -12,7 +12,7 @@ import { map, switchMap } from '@polkadot/x-rxjs/operators';

 import { deriveCache, memo } from '../util';

-type KeysAndExposures = [StorageKey, Exposure][];
+type KeysAndExposures = [StorageKey<[EraIndex, AccountId]>, Exposure][];

 const CACHE_KEY = 'eraExposure';

@@ -4,10 +4,10 @@
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Option, u32 } from '@polkadot/types';
 import type { ActiveEraInfo, EraIndex } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';

-import BN from 'bn.js';
-
+import { BN_ONE, BN_ZERO } from '@polkadot/util';
 import { map } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';
@@ -24,12 +24,12 @@ export function erasHistoric (instanceId: string, api: ApiInterfaceRx): (withAct
        const activeEra: BN = activeEraOpt.unwrapOrDefault().index;
        let lastEra = activeEra;

-        while (lastEra.gten(0) && (result.length < max)) {
+        while (lastEra.gte(BN_ZERO) && (result.length < max)) {
          if ((lastEra !== activeEra) || (withActive === true)) {
            result.push(api.registry.createType('EraIndex', lastEra));
          }

-          lastEra = lastEra.subn(1);
+          lastEra = lastEra.sub(BN_ONE);
        }

        // go from oldest to newest
@@ -1,55 +1,37 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type { ApiInterfaceRx } from '@polkadot/api/types';
+import type { ApiInterfaceRx, QueryableStorageMultiArg } from '@polkadot/api/types';
 import type { EraIndex, Exposure } from '@polkadot/types/interfaces';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveOwnExposure } from '../types';

-import { combineLatest, of } from '@polkadot/x-rxjs';
+import { of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';

-import { deriveCache, memo } from '../util';
+import { memo } from '../util';

-const CACHE_KEY = 'ownExposure';
-
-export function _ownExposure (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, era: EraIndex, withActive: boolean) => Observable<DeriveOwnExposure> {
-  return memo(instanceId, (accountId: Uint8Array | string, era: EraIndex, withActive: boolean): Observable<DeriveOwnExposure> => {
-    const cacheKey = `${CACHE_KEY}-${era.toString()}-${accountId.toString()}`;
-    const cached = withActive
-      ? undefined
-      : deriveCache.get<DeriveOwnExposure>(cacheKey);
-
-    return cached
-      ? of(cached)
-      : api.queryMulti<[Exposure, Exposure]>([
-        [api.query.staking.erasStakersClipped, [era, accountId]],
-        [api.query.staking.erasStakers, [era, accountId]]
+export function _ownExposures (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveOwnExposure[]> {
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], _withActive: boolean): Observable<DeriveOwnExposure[]> =>
+    eras.length
+      ? api.queryMulti<Exposure[]>([
+        ...eras.map((era): QueryableStorageMultiArg<'rxjs'> => [api.query.staking.erasStakersClipped, [era, accountId]]),
+        ...eras.map((era): QueryableStorageMultiArg<'rxjs'> => [api.query.staking.erasStakers, [era, accountId]])
      ]).pipe(
-        map(([clipped, exposure]): DeriveOwnExposure => {
-          const value = { clipped, era, exposure };
-
-          !withActive && deriveCache.set(cacheKey, value);
-
-          return value;
-        })
-      );
-  });
+        map((all): DeriveOwnExposure[] =>
+          eras.map((era, index) => ({ clipped: all[index], era, exposure: all[eras.length + index] }))
+        )
+      )
+      : of([])
+  );
 }

 export function ownExposure (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, era: EraIndex) => Observable<DeriveOwnExposure> {
  return memo(instanceId, (accountId: Uint8Array | string, era: EraIndex): Observable<DeriveOwnExposure> =>
-    api.derive.staking._ownExposure(accountId, era, true)
-  );
-}
-
-export function _ownExposures (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveOwnExposure[]> {
-  return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean): Observable<DeriveOwnExposure[]> =>
-    eras.length
-      ? combineLatest(
-        eras.map((era) => api.derive.staking._ownExposure(accountId, era, withActive))
-      )
-      : of([])
+    api.derive.staking._ownExposures(accountId, [era], true).pipe(
+      map(([first]) => first)
+    )
  );
 }

@@ -1,62 +1,44 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type { ApiInterfaceRx } from '@polkadot/api/types';
+import type { ApiInterfaceRx, QueryableStorageMultiArg } from '@polkadot/api/types';
 import type { Option } from '@polkadot/types';
 import type { BalanceOf, EraIndex, Perbill } from '@polkadot/types/interfaces';
 import type { ITuple } from '@polkadot/types/types';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveStakerSlashes } from '../types';

-import { combineLatest, of } from '@polkadot/x-rxjs';
+import { of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';

-import { deriveCache, memo } from '../util';
+import { memo } from '../util';

-const CACHE_KEY = 'ownSlash';
-
-export function _ownSlash (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, era: EraIndex, withActive: boolean) => Observable<DeriveStakerSlashes> {
-  return memo(instanceId, (accountId: Uint8Array | string, era: EraIndex, withActive: boolean): Observable<DeriveStakerSlashes> => {
-    const cacheKey = `${CACHE_KEY}-${era.toString()}-${accountId.toString()}`;
-    const cached = withActive
-      ? undefined
-      : deriveCache.get<DeriveStakerSlashes>(cacheKey);
-
-    return cached
-      ? of(cached)
-      : api.queryMulti<[Option<BalanceOf>, Option<ITuple<[Perbill, BalanceOf]>>]>([
-        [api.query.staking.nominatorSlashInEra, [era, accountId]],
-        [api.query.staking.validatorSlashInEra, [era, accountId]]
+export function _ownSlashes (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerSlashes[]> {
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], _withActive: boolean): Observable<DeriveStakerSlashes[]> =>
+    eras.length
+      ? api.queryMulti<(Option<ITuple<[Perbill, BalanceOf]>> | Option<BalanceOf>)[]>([
+        ...eras.map((era): QueryableStorageMultiArg<'rxjs'> => [api.query.staking.validatorSlashInEra, [era, accountId]]),
+        ...eras.map((era): QueryableStorageMultiArg<'rxjs'> => [api.query.staking.nominatorSlashInEra, [era, accountId]])
      ]).pipe(
-        map(([optNom, optVal]): DeriveStakerSlashes => {
-          const value = {
+        map((values): DeriveStakerSlashes[] =>
+          eras.map((era, index) => ({
            era,
-            total: optVal.isSome
-              ? optVal.unwrap()[1]
-              : optNom.unwrapOrDefault()
-          };
-
-          !withActive && deriveCache.set(cacheKey, value);
-
-          return value;
-        })
-      );
-  });
+            total: values[index].isSome
+              ? (values[index].unwrap() as ITuple<[Perbill, BalanceOf]>)[1]
+              : (values[index + eras.length].unwrapOrDefault() as BalanceOf)
+          }))
+        )
+      )
+      : of([])
+  );
 }

 export function ownSlash (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, era: EraIndex) => Observable<DeriveStakerSlashes> {
  return memo(instanceId, (accountId: Uint8Array | string, era: EraIndex): Observable<DeriveStakerSlashes> =>
-    api.derive.staking._ownSlash(accountId, era, true)
-  );
-}
-
-export function _ownSlashes (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerSlashes[]> {
-  return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean): Observable<DeriveStakerSlashes[]> =>
-    eras.length
-      ? combineLatest(
-        eras.map((era) => api.derive.staking._ownSlash(accountId, era, withActive))
-      )
-      : of([])
+    api.derive.staking._ownSlashes(accountId, [era], true).pipe(
+      map(([first]) => first)
+    )
  );
 }

@@ -10,36 +10,46 @@ import { map, switchMap } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

-export function _stakerExposure (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerExposure[]> {
-  return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean): Observable<DeriveStakerExposure[]> => {
-    const stakerId = api.registry.createType('AccountId', accountId).toString();
+export function _stakerExposures (instanceId: string, api: ApiInterfaceRx): (accountIds: (Uint8Array | string)[], eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerExposure[][]> {
+  return memo(instanceId, (accountIds: (Uint8Array | string)[], eras: EraIndex[], withActive: boolean): Observable<DeriveStakerExposure[][]> => {
+    const stakerIds = accountIds.map((a) => api.registry.createType('AccountId', a).toString());

    return api.derive.staking._erasExposure(eras, withActive).pipe(
-      map((exposures): DeriveStakerExposure[] =>
-        exposures.map(({ era, nominators: allNominators, validators: allValidators }): DeriveStakerExposure => {
-          const isValidator = !!allValidators[stakerId];
-          const validators: DeriveEraValidatorExposure = {};
-          const nominating = allNominators[stakerId] || [];
+      map((exposures): DeriveStakerExposure[][] =>
+        stakerIds.map((stakerId) =>
+          exposures.map(({ era, nominators: allNominators, validators: allValidators }): DeriveStakerExposure => {
+            const isValidator = !!allValidators[stakerId];
+            const validators: DeriveEraValidatorExposure = {};
+            const nominating = allNominators[stakerId] || [];

-          if (isValidator) {
-            validators[stakerId] = allValidators[stakerId];
-          } else if (nominating) {
-            nominating.forEach(({ validatorId }): void => {
-              validators[validatorId] = allValidators[validatorId];
-            });
-          }
+            if (isValidator) {
+              validators[stakerId] = allValidators[stakerId];
+            } else if (nominating) {
+              nominating.forEach(({ validatorId }): void => {
+                validators[validatorId] = allValidators[validatorId];
+              });
+            }

-          return { era, isEmpty: !Object.keys(validators).length, isValidator, nominating, validators };
-        })
+            return { era, isEmpty: !Object.keys(validators).length, isValidator, nominating, validators };
+          })
+        )
      )
    );
  });
 }

-export function stakerExposure (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, withActive?: boolean) => Observable<DeriveStakerExposure[]> {
-  return memo(instanceId, (accountId: Uint8Array | string, withActive = false): Observable<DeriveStakerExposure[]> =>
+export function stakerExposures (instanceId: string, api: ApiInterfaceRx): (accountIds: (Uint8Array | string)[], withActive?: boolean) => Observable<DeriveStakerExposure[][]> {
+  return memo(instanceId, (accountIds: (Uint8Array | string)[], withActive = false): Observable<DeriveStakerExposure[][]> =>
    api.derive.staking.erasHistoric(withActive).pipe(
-      switchMap((eras) => api.derive.staking._stakerExposure(accountId, eras, withActive))
+      switchMap((eras) => api.derive.staking._stakerExposures(accountIds, eras, withActive))
+    )
+  );
+}
+
+export function stakerExposure (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, withActive?: boolean) => Observable<DeriveStakerExposure[]> {
+  return memo(instanceId, (accountId: Uint8Array | string, withActive = false): Observable<DeriveStakerExposure[]> =>
+    api.derive.staking.stakerExposures([accountId, withActive]).pipe(
+      map(([first]) => first)
    )
  );
 }
@@ -2,45 +2,39 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { ApiInterfaceRx } from '@polkadot/api/types';
-import type { Option } from '@polkadot/types';
-import type { AccountId, EraIndex, StakingLedger, StakingLedgerTo240 } from '@polkadot/types/interfaces';
+import type { AccountId, EraIndex, StakingLedger } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';
 import type { Observable } from '@polkadot/x-rxjs';
 import type { DeriveEraPoints, DeriveEraPrefs, DeriveEraRewards, DeriveEraValPrefs, DeriveStakerExposure, DeriveStakerReward, DeriveStakerRewardValidator } from '../types';
 import type { DeriveStakingQuery } from './types';

-import BN from 'bn.js';
-
-import { isFunction } from '@polkadot/util';
+import { BN_BILLION, BN_ZERO } from '@polkadot/util';
 import { combineLatest, of } from '@polkadot/x-rxjs';
 import { map, switchMap } from '@polkadot/x-rxjs/operators';

 import { memo } from '../util';

-type ErasResult = [{ unwrapOr: (value: BN) => BN }, DeriveEraPoints[], DeriveEraPrefs[], DeriveEraRewards[]];
+type ErasResult = [DeriveEraPoints[], DeriveEraPrefs[], DeriveEraRewards[]];

-const ZERO = new BN(0);
-const MIN_ONE = new BN(-1);
-const COMM_DIV = new BN(1_000_000_000);
-
-function parseRewards (api: ApiInterfaceRx, stashId: AccountId, [, erasPoints, erasPrefs, erasRewards]: ErasResult, exposures: DeriveStakerExposure[]): DeriveStakerReward[] {
+function parseRewards (api: ApiInterfaceRx, stashId: AccountId, [erasPoints, erasPrefs, erasRewards]: ErasResult, exposures: DeriveStakerExposure[]): DeriveStakerReward[] {
  return exposures.map(({ era, isEmpty, isValidator, nominating, validators: eraValidators }): DeriveStakerReward => {
-    const { eraPoints, validators: allValPoints } = erasPoints.find((p) => p.era.eq(era)) || { eraPoints: ZERO, validators: {} };
+    const { eraPoints, validators: allValPoints } = erasPoints.find((p) => p.era.eq(era)) || { eraPoints: BN_ZERO, validators: {} };
    const { eraReward } = erasRewards.find((r) => r.era.eq(era)) || { eraReward: api.registry.createType('Balance') };
    const { validators: allValPrefs } = erasPrefs.find((p) => p.era.eq(era)) || { validators: {} as DeriveEraValPrefs };
    const validators: Record<string, DeriveStakerRewardValidator> = {};
    const stakerId = stashId.toString();

    Object.entries(eraValidators).forEach(([validatorId, exposure]): void => {
-      const valPoints = allValPoints[validatorId] || ZERO;
-      const valComm = allValPrefs[validatorId]?.commission.unwrap() || ZERO;
-      const expTotal = exposure.total.unwrap();
-      let avail = ZERO;
+      const valPoints = allValPoints[validatorId] || BN_ZERO;
+      const valComm = allValPrefs[validatorId]?.commission.unwrap() || BN_ZERO;
+      const expTotal = exposure.total?.unwrap() || BN_ZERO;
+      let avail = BN_ZERO;
      let value: BN | undefined;

      if (!(expTotal.isZero() || valPoints.isZero() || eraPoints.isZero())) {
        avail = eraReward.mul(valPoints).div(eraPoints);

-        const valCut = valComm.mul(avail).div(COMM_DIV);
+        const valCut = valComm.mul(avail).div(BN_BILLION);
        let staked: BN;

        if (validatorId === stakerId) {
@@ -50,10 +44,10 @@ function parseRewards (api: ApiInterfaceRx, stashId: AccountId, [, erasPoints, e

          staked = stakerExp
            ? stakerExp.value.unwrap()
-            : ZERO;
+            : BN_ZERO;
        }

-        value = avail.sub(valCut).imul(staked).div(expTotal).iadd(validatorId === stakerId ? valCut : ZERO);
+        value = avail.sub(valCut).imul(staked).div(expTotal).iadd(validatorId === stakerId ? valCut : BN_ZERO);
      }

      validators[validatorId] = {
@@ -73,32 +67,25 @@ function parseRewards (api: ApiInterfaceRx, stashId: AccountId, [, erasPoints, e
  });
 }

-function uniqValidators (rewards: DeriveStakerReward[]): string[] {
-  const uniq: string[] = [];
+function allUniqValidators (rewards: DeriveStakerReward[][]): [string[], string[][]] {
+  return rewards.reduce(([all, perStash]: [string[], string[][]], rewards) => {
+    const uniq: string[] = [];

-  rewards.forEach(({ validators }): void => {
-    Object.keys(validators).forEach((validatorId): void => {
-      if (!uniq.includes(validatorId)) {
-        uniq.push(validatorId);
-      }
-    });
-  });
+    perStash.push(uniq);
+    rewards.forEach(({ validators }) =>
+      Object.keys(validators).forEach((validatorId): void => {
+        if (!uniq.includes(validatorId)) {
+          uniq.push(validatorId);

-  return uniq;
-}
+          if (!all.includes(validatorId)) {
+            all.push(validatorId);
+          }
+        }
+      })
+    );

-function isOldLedger (ledger?: StakingLedger | StakingLedgerTo240): ledger is StakingLedgerTo240 {
-  return !!(ledger as StakingLedgerTo240)?.lastReward;
-}
-
-function filterEra (era: EraIndex, stakingLedger: StakingLedger): boolean {
-  return isOldLedger(stakingLedger)
-    ? era.gt(stakingLedger.lastReward.unwrapOr(MIN_ONE))
-    : !stakingLedger.claimedRewards.some((e) => e.eq(era));
-}
-
-function filterEras (eras: EraIndex[], stakingLedger: StakingLedger): EraIndex[] {
-  return eras.filter((era) => filterEra(era, stakingLedger));
+    return [all, perStash];
+  }, [[], []]);
 }

 function removeClaimed (validators: string[], queryValidators: DeriveStakingQuery[], reward: DeriveStakerReward): void {
@@ -121,43 +108,32 @@ function removeClaimed (validators: string[], queryValidators: DeriveStakingQuer
  });
 }

-function filterRewards (api: ApiInterfaceRx, eras: EraIndex[], { migrateEra, rewards, stakingLedger }: { migrateEra: BN, rewards: DeriveStakerReward[]; stakingLedger: StakingLedger }): Observable<DeriveStakerReward[]> {
-  const validators = uniqValidators(rewards);
-  const filter = filterEras(eras, stakingLedger);
+function filterRewards (eras: EraIndex[], valInfo: [string, DeriveStakingQuery][], { rewards, stakingLedger }: { rewards: DeriveStakerReward[]; stakingLedger: StakingLedger }): DeriveStakerReward[] {
+  const filter = eras.filter((era) => !stakingLedger.claimedRewards.some((e) => e.eq(era)));
+  const validators = valInfo.map(([v]) => v);
+  const queryValidators = valInfo.map(([, q]) => q);

-  return api.derive.staking.queryMulti(validators, { withLedger: true }).pipe(
-    map((queryValidators): DeriveStakerReward[] =>
-      rewards
-        .filter(({ isEmpty }) => !isEmpty)
-        .filter((reward): boolean => {
-          if (!filter.some((filter) => reward.era.eq(filter))) {
-            return false;
-          } else if (reward.era.lt(migrateEra)) {
-            // we filter again here, the actual ledger may have changed, e.g. something has been claimed
-            return filterEra(reward.era, stakingLedger);
-          }
+  return rewards
+    .filter(({ isEmpty }) => !isEmpty)
+    .filter((reward): boolean => {
+      if (!filter.some((filter) => reward.era.eq(filter))) {
+        return false;
+      }

-          reward.isStakerPayout = true;
+      removeClaimed(validators, queryValidators, reward);

-          removeClaimed(validators, queryValidators, reward);
-
-          return true;
-        })
-        .filter(({ validators }) => Object.keys(validators).length !== 0)
-        .map((reward) => ({
-          ...reward,
-          nominators: reward.nominating.filter((n) => reward.validators[n.validatorId])
-        }))
-    )
-  );
+      return true;
+    })
+    .filter(({ validators }) => Object.keys(validators).length !== 0)
+    .map((reward) => ({
+      ...reward,
+      nominators: reward.nominating.filter((n) => reward.validators[n.validatorId])
+    }));
 }

 export function _stakerRewardsEras (instanceId: string, api: ApiInterfaceRx): (eras: EraIndex[], withActive: boolean) => Observable<ErasResult> {
  return memo(instanceId, (eras: EraIndex[], withActive: boolean): Observable<ErasResult> =>
    combineLatest([
-      isFunction(api.query.staking.migrateEra)
-        ? api.query.staking.migrateEra<Option<EraIndex>>()
-        : of(api.registry.createType('Option<EraIndex>')),
      api.derive.staking._erasPoints(eras, withActive),
      api.derive.staking._erasPrefs(eras, withActive),
      api.derive.staking._erasRewards(eras, withActive)
@@ -165,23 +141,43 @@ export function _stakerRewardsEras (instanceId: string, api: ApiInterfaceRx): (e
  );
 }

-export function _stakerRewards (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerReward[]> {
-  return memo(instanceId, (accountId: Uint8Array | string, eras: EraIndex[], withActive: boolean): Observable<DeriveStakerReward[]> =>
+export function _stakerRewards (instanceId: string, api: ApiInterfaceRx): (accountIds: (Uint8Array | string)[], eras: EraIndex[], withActive: boolean) => Observable<DeriveStakerReward[][]> {
+  return memo(instanceId, (accountIds: (Uint8Array | string)[], eras: EraIndex[], withActive: boolean): Observable<DeriveStakerReward[][]> =>
    combineLatest([
-      api.derive.staking.query(accountId, { withLedger: true }),
-      api.derive.staking._stakerExposure(accountId, eras, withActive),
+      api.derive.staking.queryMulti(accountIds, { withLedger: true }),
+      api.derive.staking._stakerExposures(accountIds, eras, withActive),
      api.derive.staking._stakerRewardsEras(eras, withActive)
    ]).pipe(
-      switchMap(([{ stakingLedger, stashId }, exposures, erasResult]): Observable<DeriveStakerReward[]> => {
-        if (!stashId || !stakingLedger) {
-          return of([]);
+      switchMap(([queries, exposures, erasResult]): Observable<DeriveStakerReward[][]> => {
+        const allRewards = queries.map(({ stakingLedger, stashId }, index): DeriveStakerReward[] =>
+          (!stashId || !stakingLedger)
+            ? []
+            : parseRewards(api, stashId, erasResult, exposures[index])
+        );
+
+        if (withActive) {
+          return of(allRewards);
        }

-        const rewards = parseRewards(api, stashId, erasResult, exposures);
+        const [allValidators, stashValidators] = allUniqValidators(allRewards);

-        return withActive
-          ? of(rewards)
-          : filterRewards(api, eras, { migrateEra: erasResult[0].unwrapOr(ZERO), rewards, stakingLedger });
+        return api.derive.staking.queryMulti(allValidators, { withLedger: true }).pipe(
+          map((queriedVals): DeriveStakerReward[][] =>
+            queries.map(({ stakingLedger }, index): DeriveStakerReward[] =>
+              filterRewards(
+                eras,
+                stashValidators[index].map((validatorId): [string, DeriveStakingQuery] => [
+                  validatorId,
+                  queriedVals.find((q) => q.accountId.eq(validatorId)) as DeriveStakingQuery
+                ]),
+                {
+                  rewards: allRewards[index],
+                  stakingLedger
+                }
+              )
+            )
+          )
+        );
      })
    )
  );
@@ -190,7 +186,8 @@ export function _stakerRewards (instanceId: string, api: ApiInterfaceRx): (accou
 export function stakerRewards (instanceId: string, api: ApiInterfaceRx): (accountId: Uint8Array | string, withActive?: boolean) => Observable<DeriveStakerReward[]> {
  return memo(instanceId, (accountId: Uint8Array | string, withActive = false): Observable<DeriveStakerReward[]> =>
    api.derive.staking.erasHistoric(withActive).pipe(
-      switchMap((eras) => api.derive.staking._stakerRewards(accountId, eras, withActive))
+      switchMap((eras) => api.derive.staking._stakerRewards([accountId], eras, withActive)),
+      map(([first]) => first)
    )
  );
 }
@@ -198,7 +195,7 @@ export function stakerRewards (instanceId: string, api: ApiInterfaceRx): (accoun
 export function stakerRewardsMultiEras (instanceId: string, api: ApiInterfaceRx): (accountIds: (Uint8Array | string)[], eras: EraIndex[]) => Observable<DeriveStakerReward[][]> {
  return memo(instanceId, (accountIds: (Uint8Array | string)[], eras: EraIndex[]): Observable<DeriveStakerReward[][]> =>
    accountIds.length && eras.length
-      ? combineLatest(accountIds.map((acc) => api.derive.staking._stakerRewards(acc, eras, false)))
+      ? api.derive.staking._stakerRewards(accountIds, eras, false)
      : of([])
  );
 }
@@ -5,17 +5,42 @@ import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { AccountId } from '@polkadot/types/interfaces';
 import type { Observable } from '@polkadot/x-rxjs';

-import { map } from '@polkadot/x-rxjs/operators';
+import { map, startWith, switchMap } from '@polkadot/x-rxjs/operators';

-import { memo } from '../util';
+import { drr, memo } from '../util';
+
+function onBondedEvent (api: ApiInterfaceRx): Observable<number> {
+  let current = Date.now();
+
+  return api.query.system.events().pipe(
+    map((events): number => {
+      current = events.filter(({ event, phase }): boolean => {
+        try {
+          return phase.isApplyExtrinsic &&
+            event.section === 'staking' &&
+            event.method === 'Bonded';
+        } catch {
+          return false;
+        }
+      })
+        ? Date.now()
+        : current;
+
+      return current;
+    }),
+    startWith(current),
+    drr({ skipTimeout: true })
+  );
+}

 /**
 * @description Retrieve the list of all validator stashes
 */
 export function stashes (instanceId: string, api: ApiInterfaceRx): () => Observable<AccountId[]> {
  return memo(instanceId, (): Observable<AccountId[]> =>
-    api.query.staking.validators.keys().pipe(
-      map((keys) => keys.map((key) => key.args[0]).filter((a) => a))
+    onBondedEvent(api).pipe(
+      switchMap(() => api.query.staking.validators.keys()),
+      map((keys) => keys.map(({ args: [validatorId] }) => validatorId).filter((a) => a))
    )
  );
 }
@@ -1,8 +1,8 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type BN from 'bn.js';
 import type { AccountId, Balance, EraIndex, Exposure, RewardDestination, RewardPoint, StakingLedger, ValidatorPrefs } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';
 import type { DeriveSessionIndexes } from '../session/types';

 export type DeriveEraValPoints = Record<string, RewardPoint>;
@@ -81,7 +81,6 @@ export interface DeriveStakerRewardValidator {
 export interface DeriveStakerReward {
  era: EraIndex;
  eraReward: Balance;
-  isStakerPayout?: boolean;
  isEmpty: boolean;
  isValidator: boolean;
  nominating: DeriveEraExposureNominating[];
@@ -18,7 +18,7 @@ export function nextElected (instanceId: string, api: ApiInterfaceRx): () => Obs
        // only populate for next era in the last session, so track both here - entries are not
        // subscriptions, so we need a trigger - currentIndex acts as that trigger to refresh
        switchMap(({ currentEra }) => api.query.staking.erasStakers.keys(currentEra)),
-        map((keys) => keys.map((key) => key.args[1]))
+        map((keys) => keys.map(({ args: [, accountId] }) => accountId))
      )
      : api.query.staking.currentElected<AccountId[]>()
  );
@@ -61,7 +61,9 @@ function retrieveProposals (api: ApiInterfaceRx, proposalCount: ProposalIndex, a

  return combineLatest([
    api.query.treasury.proposals.multi<Option<TreasuryProposal>>(allIds),
-    api.derive.council.proposals()
+    api.derive.council
+      ? api.derive.council.proposals()
+      : of([] as DeriveCollectiveProposal[])
  ]).pipe(
    map(([allProposals, councilProposals]: [Option<TreasuryProposal>[], DeriveCollectiveProposal[]]): DeriveTreasuryProposals =>
      parseResult(api, { allIds, allProposals, approvalIds, councilProposals, proposalCount })
@@ -1,7 +1,7 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import BN from 'bn.js';
+import { BN } from '@polkadot/util';

 export const FALLBACK_MAX_HASH_COUNT = 250;

@@ -33,10 +33,19 @@ function nextNonce (api: ApiInterfaceRx, address: string): Observable<Index> {
 function signingHeader (api: ApiInterfaceRx): Observable<Header> {
  return combineLatest([
    api.rpc.chain.getHeader(),
-    api.rpc.chain.getFinalizedHead().pipe(
-      switchMap((hash) => api.rpc.chain.getHeader(hash))
-    )
+    api.rpc.chain.getFinalizedHead()
  ]).pipe(
+    switchMap(([bestHeader, finHash]) =>
+      // retrieve the headers - in the case of the current block, we use the parent
+      // to minimize (not completely remove) the impact that forks do have on the system
+      // (when at genesis, just return the current header as the last known)
+      bestHeader.parentHash.isEmpty
+        ? of([bestHeader, bestHeader])
+        : combineLatest([
+          api.rpc.chain.getHeader(bestHeader.parentHash),
+          api.rpc.chain.getHeader(finHash)
+        ])
+    ),
    map(([current, finalized]) =>
      // determine the hash to use, current when lag > max, else finalized
      current.number.unwrap().sub(finalized.number.unwrap()).gt(MAX_FINALITY_LAG)
@@ -2,43 +2,41 @@
 // SPDX-License-Identifier: Apache-2.0

 import type { AccountId, Header } from '@polkadot/types/interfaces';
-import type { Constructor, Registry } from '@polkadot/types/types';
-
-import { Struct } from '@polkadot/types';
-import runtimeTypes from '@polkadot/types/interfaces/runtime/definitions';
+import type { Registry } from '@polkadot/types/types';
+import type { HeaderExtended } from './types';

 import { extractAuthor } from './util';

-// We can ignore the properties, added via Struct.with
-const _Header = Struct.with(runtimeTypes.types.Header as any) as Constructor<Header>;
+export function createHeaderExtended (registry: Registry, header?: Header, validators?: AccountId[]): HeaderExtended {
+  // an instance of the base extrinsic for us to extend
+  const HeaderBase = registry.createClass('Header');

-/**
- * @name HeaderExtended
- * @description
- * A [[Block]] header with an additional `author` field that indicates the block author
- */
-export class HeaderExtended extends _Header {
-  readonly #author?: AccountId;
-  readonly #validators?: AccountId[];
+  class Implementation extends HeaderBase implements HeaderExtended {
+    readonly #author?: AccountId;
+    readonly #validators?: AccountId[];

-  constructor (registry: Registry, header?: Header, validators?: AccountId[]) {
-    super(registry, header);
+    constructor (registry: Registry, header?: Header, validators?: AccountId[]) {
+      super(registry, header);

-    this.#author = extractAuthor(this.digest, validators);
-    this.#validators = validators;
+      this.#author = extractAuthor(this.digest, validators);
+      this.#validators = validators;
+      this.createdAtHash = header?.createdAtHash;
+    }
+
+    /**
+     * @description Convenience method, returns the author for the block
+     */
+    public get author (): AccountId | undefined {
+      return this.#author;
+    }
+
+    /**
+     * @description Convenience method, returns the validators for the block
+     */
+    public get validators (): AccountId[] | undefined {
+      return this.#validators;
+    }
  }

-  /**
-   * @description Convenience method, returns the author for the block
-   */
-  public get author (): AccountId | undefined {
-    return this.#author;
-  }
-
-  /**
-   * @description Convenience method, returns the validators for the block
-   */
-  public get validators (): AccountId[] | undefined {
-    return this.#validators;
-  }
+  return new Implementation(registry, header, validators);
 }
@@ -1,24 +1,12 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type { AccountId, DispatchError, DispatchInfo, Event, EventRecord, Extrinsic, SignedBlock } from '@polkadot/types/interfaces';
-import type { Constructor, Registry } from '@polkadot/types/types';
-
-import { Struct } from '@polkadot/types';
-import runtimeTypes from '@polkadot/types/interfaces/runtime/definitions';
+import type { AccountId, DispatchError, DispatchInfo, EventRecord, Extrinsic, SignedBlock } from '@polkadot/types/interfaces';
+import type { Registry } from '@polkadot/types/types';
+import type { SignedBlockExtended, TxWithEvent } from './types';

 import { extractAuthor } from './util';

-// We can ignore the properties, added via Struct.with
-const _SignedBlock = Struct.with(runtimeTypes.types.SignedBlock as any) as Constructor<SignedBlock>;
-
-interface TxWithEvent {
-  dispatchError?: DispatchError;
-  dispatchInfo?: DispatchInfo;
-  events: Event[];
-  extrinsic: Extrinsic;
-}
-
 function mapExtrinsics (extrinsics: Extrinsic[], records: EventRecord[]): TxWithEvent[] {
  return extrinsics.map((extrinsic, index): TxWithEvent => {
    let dispatchError: DispatchError | undefined;
@@ -43,42 +31,45 @@ function mapExtrinsics (extrinsics: Extrinsic[], records: EventRecord[]): TxWith
  });
 }

-/**
- * @name SignedBlockExtended
- * @description
- * A [[Block]] header with an additional `author` field that indicates the block author
- */
-export class SignedBlockExtended extends _SignedBlock {
-  readonly #author?: AccountId;
-  readonly #events: EventRecord[];
-  readonly #extrinsics: TxWithEvent[];
+export function createSignedBlockExtended (registry: Registry, block?: SignedBlock, events?: EventRecord[], validators?: AccountId[]): SignedBlockExtended {
+  // an instance of the base extrinsic for us to extend
+  const SignedBlockBase = registry.createClass('SignedBlock');

-  constructor (registry: Registry, block?: SignedBlock, events?: EventRecord[], sessionValidators?: AccountId[]) {
-    super(registry, block);
+  class Implementation extends SignedBlockBase implements SignedBlockExtended {
+    readonly #author?: AccountId;
+    readonly #events: EventRecord[];
+    readonly #extrinsics: TxWithEvent[];

-    this.#author = extractAuthor(this.block.header.digest, sessionValidators);
-    this.#events = events || ([] as EventRecord[]);
-    this.#extrinsics = mapExtrinsics(this.block.extrinsics, this.#events);
+    constructor (registry: Registry, block?: SignedBlock, events?: EventRecord[], validators?: AccountId[]) {
+      super(registry, block);
+
+      this.#author = extractAuthor(this.block.header.digest, validators);
+      this.#events = events || ([] as EventRecord[]);
+      this.#extrinsics = mapExtrinsics(this.block.extrinsics, this.#events);
+      this.createdAtHash = block?.createdAtHash;
+    }
+
+    /**
+     * @description Convenience method, returns the author for the block
+     */
+    public get author (): AccountId | undefined {
+      return this.#author;
+    }
+
+    /**
+     * @description Convenience method, returns the events associated with the block
+     */
+    public get events (): EventRecord[] {
+      return this.#events;
+    }
+
+    /**
+     * @description Returns the extrinsics and their events, mapped
+     */
+    public get extrinsics (): TxWithEvent[] {
+      return this.#extrinsics;
+    }
  }

-  /**
-   * @description Convenience method, returns the author for the block
-   */
-  public get author (): AccountId | undefined {
-    return this.#author;
-  }
-
-  /**
-   * @description Convenience method, returns the events associated with the block
-   */
-  public get events (): EventRecord[] {
-    return this.#events;
-  }
-
-  /**
-   * @description Returns the extrinsics and their events, mapped
-   */
-  public get extrinsics (): TxWithEvent[] {
-    return this.#extrinsics;
-  }
+  return new Implementation(registry, block, events, validators);
 }
@@ -1,5 +1,5 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-export { HeaderExtended } from './HeaderExtended';
-export { SignedBlockExtended } from './SignedBlockExtended';
+export { createHeaderExtended } from './HeaderExtended';
+export { createSignedBlockExtended } from './SignedBlockExtended';
@@ -0,0 +1,22 @@
+// Copyright 2017-2021 @polkadot/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { AccountId, DispatchError, DispatchInfo, Event, EventRecord, Extrinsic, Header, SignedBlock } from '@polkadot/types/interfaces';
+
+export interface HeaderExtended extends Header {
+  readonly author: AccountId | undefined;
+  readonly validators: AccountId[] | undefined;
+}
+
+export interface SignedBlockExtended extends SignedBlock {
+  readonly author: AccountId | undefined;
+  readonly events: EventRecord[];
+  readonly extrinsics: TxWithEvent[];
+}
+
+export interface TxWithEvent {
+  dispatchError?: DispatchError;
+  dispatchInfo?: DispatchInfo;
+  events: Event[];
+  extrinsic: Extrinsic;
+}
@@ -5,20 +5,43 @@ import type { AccountId, Digest } from '@polkadot/types/interfaces';

 export function extractAuthor (digest: Digest, sessionValidators: AccountId[] = []): AccountId | undefined {
  const [citem] = digest.logs.filter(({ type }) => type === 'Consensus');
+  const [pitem] = digest.logs.filter(({ type }) => type === 'PreRuntime');
+  const [sitem] = digest.logs.filter(({ type }) => type === 'Seal');

-  if (citem) {
-    const [engine, data] = citem.asConsensus;
+  let accountId: AccountId | undefined;

-    return engine.extractAuthor(data, sessionValidators);
-  } else {
-    const [pitem] = digest.logs.filter(({ type }) => type === 'PreRuntime');
-
-    if (pitem) {
+  // This is critical to be first for BABE (before Consensus)
+  // If not first, we end up dropping the author at session-end
+  if (pitem) {
+    try {
      const [engine, data] = pitem.asPreRuntime;

-      return engine.extractAuthor(data, sessionValidators);
+      accountId = engine.extractAuthor(data, sessionValidators);
+    } catch {
+      // ignore
    }
  }

-  return undefined;
+  if (!accountId && citem) {
+    try {
+      const [engine, data] = citem.asConsensus;
+
+      accountId = engine.extractAuthor(data, sessionValidators);
+    } catch {
+      // ignore
+    }
+  }
+
+  // SEAL, still used in e.g. Kulupu for pow
+  if (!accountId && sitem) {
+    try {
+      const [engine, data] = sitem.asSeal;
+
+      accountId = engine.extractAuthor(data, sessionValidators);
+    } catch {
+      // ignore
+    }
+  }
+
+  return accountId;
 }
@@ -1,9 +1,9 @@
 // Copyright 2017-2021 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0

-import type BN from 'bn.js';
 import type { u32 } from '@polkadot/types';
 import type { AccountId, Balance, BalanceLock, BalanceLockTo212, BalanceOf, Bid, BidKind, BlockNumber, Bounty, BountyIndex, Hash, Index, Proposal, ProposalIndex, SetIndex, SocietyVote, StrikeCount, TreasuryProposal, Votes, VouchingStatus } from '@polkadot/types/interfaces';
+import type { BN } from '@polkadot/util';

 export * from './accounts/types';
 export * from './council/types';
@@ -12,6 +12,7 @@ export * from './elections/types';
 export * from './parachains/types';
 export * from './session/types';
 export * from './staking/types';
+export * from './type/types';

 export interface DeriveBalancesAccountData {
  freeBalance: Balance;
@@ -107,6 +108,7 @@ export interface DeriveSocietyCandidate {

 export interface DeriveSocietyMember {
  accountId: AccountId;
+  isDefenderVoter: boolean;
  isSuspended: boolean;
  payouts: [BlockNumber, Balance][];
  strikes: StrikeCount;
@@ -5,7 +5,7 @@ import type { DeriveCache } from './types';

 const mapCache = new Map<string, any>();

-const deriveMapCache: DeriveCache = {
+export const deriveMapCache: DeriveCache = {
  del: (key: string): void => {
    mapCache.delete(key);
  },
@@ -24,11 +24,9 @@ const deriveMapCache: DeriveCache = {
  }
 };

-const deriveNoopCache: DeriveCache = {
+export const deriveNoopCache: DeriveCache = {
  del: (): void => undefined,
  forEach: () => undefined,
  get: (): undefined => undefined,
  set: (_: string, value: unknown): unknown => value
 };
-
-export { deriveMapCache, deriveNoopCache };
@@ -1,12 +1,16 @@
 {
  "name": "@polkadot/api",
-  "version": "3.7.1",
+  "version": "4.16.2",
+  "type": "module",
  "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
  "main": "index.js",
  "sideEffects": [
    "./detectPackage.js",
-    "./detectPackage.mjs"
+    "./detectPackage.cjs"
  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
  "author": "Jaco Greeff <jacogr@gmail.com>",
  "maintainers": [],
  "contributors": [],
@@ -15,18 +19,17 @@
  "bugs": "https://github.com/polkadot-js/api/issues",
  "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
  "dependencies": {
-    "@babel/runtime": "^7.12.5",
-    "@polkadot/api-derive": "3.7.1",
-    "@polkadot/keyring": "^5.5.1",
-    "@polkadot/metadata": "3.7.1",
-    "@polkadot/rpc-core": "3.7.1",
-    "@polkadot/rpc-provider": "3.7.1",
-    "@polkadot/types": "3.7.1",
-    "@polkadot/types-known": "3.7.1",
-    "@polkadot/util": "^5.5.1",
-    "@polkadot/util-crypto": "^5.5.1",
-    "@polkadot/x-rxjs": "^5.5.1",
-    "bn.js": "^4.11.9",
+    "@babel/runtime": "^7.14.6",
+    "@polkadot/api-derive": "4.16.2",
+    "@polkadot/keyring": "^6.10.1",
+    "@polkadot/metadata": "4.16.2",
+    "@polkadot/rpc-core": "4.16.2",
+    "@polkadot/rpc-provider": "4.16.2",
+    "@polkadot/types": "4.16.2",
+    "@polkadot/types-known": "4.16.2",
+    "@polkadot/util": "^6.10.1",
+    "@polkadot/util-crypto": "^6.10.1",
+    "@polkadot/x-rxjs": "^6.10.1",
    "eventemitter3": "^4.0.7"
  }
 }
@@ -1,9 +1,10 @@
 // Auto-generated via `yarn polkadot-types-from-chain`, do not edit
 /* eslint-disable */

-import type { Vec, u16, u32, u64, u8 } from '@polkadot/types';
+import type { Vec, u16, u32, u64 } from '@polkadot/types';
 import type { Codec } from '@polkadot/types/types';
-import type { Balance, BalanceOf, BlockNumber, LockIdentifier, ModuleId, Moment, Perbill, Percent, Permill, RuntimeDbWeight, Weight } from '@polkadot/types/interfaces/runtime';
+import type { Schedule } from '@polkadot/types/interfaces/contracts';
+import type { Balance, BalanceOf, BlockNumber, LockIdentifier, Moment, PalletId, Perbill, Percent, Permill, RuntimeDbWeight, Weight } from '@polkadot/types/interfaces/runtime';
 import type { SessionIndex } from '@polkadot/types/interfaces/session';
 import type { EraIndex } from '@polkadot/types/interfaces/staking';
 import type { RuntimeVersion } from '@polkadot/types/interfaces/state';
@@ -14,13 +15,10 @@ import type { ApiTypes } from '@polkadot/api/types';
 declare module '@polkadot/api/types/consts' {
  export interface AugmentedConsts<ApiType> {
    babe: {
-      [key: string]: Codec;
      /**
-       * The number of **slots** that an epoch takes. We couple sessions to
-       * epochs, i.e. we start a new session once the new epoch begins.
-       * NOTE: Currently it is not possible to change the epoch duration
-       * after the chain has started. Attempting to do so will brick block
-       * production.
+       * The amount of time, in slots, that each epoch should last.
+       * NOTE: Currently it is not possible to change the epoch duration after
+       * the chain has started. Attempting to do so will brick block production.
       **/
      epochDuration: u64 & AugmentedConst<ApiType>;
      /**
@@ -31,16 +29,22 @@ declare module '@polkadot/api/types/consts' {
       * the probability of a slot being empty).
       **/
      expectedBlockTime: Moment & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    balances: {
-      [key: string]: Codec;
      /**
       * The minimum amount required to keep an account open.
       **/
      existentialDeposit: Balance & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    bounties: {
-      [key: string]: Codec;
      /**
       * Percentage of the curator fee that will be reserved upfront as deposit for bounty curator.
       **/
@@ -69,9 +73,12 @@ declare module '@polkadot/api/types/consts' {
       * Maximum acceptable reason length.
       **/
      maximumReasonLength: u32 & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    contracts: {
-      [key: string]: Codec;
      /**
       * The maximum number of tries that can be queued for deletion.
       **/
@@ -106,15 +113,6 @@ declare module '@polkadot/api/types/consts' {
       * It works the same as [`Self::DepositPerStorageByte`] but for storage items.
       **/
      depositPerStorageItem: BalanceOf & AugmentedConst<ApiType>;
-      /**
-       * The maximum nesting level of a call/instantiate stack. A reasonable default
-       * value is 100.
-       **/
-      maxDepth: u32 & AugmentedConst<ApiType>;
-      /**
-       * The maximum size of a storage value in bytes. A reasonable default is 16 KiB.
-       **/
-      maxValueSize: u32 & AugmentedConst<ApiType>;
      /**
       * The fraction of the deposit that should be used as rent per block.
       * 
@@ -123,6 +121,10 @@ declare module '@polkadot/api/types/consts' {
       * This determines how high this rent payment is per block as a fraction of the deposit.
       **/
      rentFraction: Perbill & AugmentedConst<ApiType>;
+      /**
+       * Cost schedule and limits.
+       **/
+      schedule: Schedule & AugmentedConst<ApiType>;
      /**
       * Number of block delay an extrinsic claim surcharge has.
       * 
@@ -139,9 +141,12 @@ declare module '@polkadot/api/types/consts' {
       * The minimum amount required to generate a tombstone.
       **/
      tombstoneDeposit: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    democracy: {
-      [key: string]: Codec;
      /**
       * Period in blocks where an external proposal may not be re-submitted after being vetoed.
       **/
@@ -155,7 +160,7 @@ declare module '@polkadot/api/types/consts' {
       **/
      enactmentPeriod: BlockNumber & AugmentedConst<ApiType>;
      /**
-       * Minimum voting period allowed for an emergency referendum.
+       * Minimum voting period allowed for a fast-track referendum.
       **/
      fastTrackVotingPeriod: BlockNumber & AugmentedConst<ApiType>;
      /**
@@ -164,6 +169,9 @@ declare module '@polkadot/api/types/consts' {
      launchPeriod: BlockNumber & AugmentedConst<ApiType>;
      /**
       * The maximum number of votes for an account.
+       * 
+       * Also used to compute weight, an overly big value can
+       * lead to extrinsic with very big weight: see `delegate` for instance.
       **/
      maxVotes: u32 & AugmentedConst<ApiType>;
      /**
@@ -178,21 +186,128 @@ declare module '@polkadot/api/types/consts' {
       * How often (in blocks) to check for new votes.
       **/
      votingPeriod: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
+    };
+    electionProviderMultiPhase: {
+      /**
+       * The repeat threshold of the offchain worker.
+       * 
+       * For example, if it is 5, that means that at least 5 blocks will elapse between attempts
+       * to submit the worker's solution.
+       **/
+      offchainRepeat: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Duration of the signed phase.
+       **/
+      signedPhase: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * The minimum amount of improvement to the solution score that defines a solution as
+       * "better" (in any phase).
+       **/
+      solutionImprovementThreshold: Perbill & AugmentedConst<ApiType>;
+      /**
+       * Duration of the unsigned phase.
+       **/
+      unsignedPhase: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    elections: {
-      [key: string]: Codec;
+      /**
+       * How much should be locked up in order to submit one's candidacy.
+       **/
      candidacyBond: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Number of members to elect.
+       **/
      desiredMembers: u32 & AugmentedConst<ApiType>;
+      /**
+       * Number of runners_up to keep.
+       **/
      desiredRunnersUp: u32 & AugmentedConst<ApiType>;
-      moduleId: LockIdentifier & AugmentedConst<ApiType>;
+      /**
+       * Identifier for the elections-phragmen pallet's lock
+       **/
+      palletId: LockIdentifier & AugmentedConst<ApiType>;
+      /**
+       * How long each seat is kept. This defines the next block number at which an election
+       * round will happen. If set to zero, no elections are ever triggered and the module will
+       * be in passive mode.
+       **/
      termDuration: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Base deposit associated with voting.
+       * 
+       * This should be sensibly high to economically ensure the pallet cannot be attacked by
+       * creating a gigantic number of votes.
+       **/
      votingBondBase: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * The amount of bond that need to be locked for each vote (32 bytes).
+       **/
      votingBondFactor: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
+    };
+    gilt: {
+      /**
+       * Portion of the queue which is free from ordering and just a FIFO.
+       * 
+       * Must be no greater than `MaxQueueLen`.
+       **/
+      fifoQueueLen: u32 & AugmentedConst<ApiType>;
+      /**
+       * The number of blocks between consecutive attempts to issue more gilts in an effort to
+       * get to the target amount to be frozen.
+       * 
+       * A larger value results in fewer storage hits each block, but a slower period to get to
+       * the target.
+       **/
+      intakePeriod: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * The maximum amount of bids that can be turned into issued gilts each block. A larger
+       * value here means less of the block available for transactions should there be a glut of
+       * bids to make into gilts to reach the target.
+       **/
+      maxIntakeBids: u32 & AugmentedConst<ApiType>;
+      /**
+       * Maximum number of items that may be in each duration queue.
+       **/
+      maxQueueLen: u32 & AugmentedConst<ApiType>;
+      /**
+       * The minimum amount of funds that may be offered to freeze for a gilt. Note that this
+       * does not actually limit the amount which may be frozen in a gilt since gilts may be
+       * split up in order to satisfy the desired amount of funds under gilts.
+       * 
+       * It should be at least big enough to ensure that there is no possible storage spam attack
+       * or queue-filling attack.
+       **/
+      minFreeze: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * The base period for the duration queues. This is the common multiple across all
+       * supported freezing durations that can be bid upon.
+       **/
+      period: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Number of duration queues in total. This sets the maximum duration supported, which is
+       * this value multiplied by `Period`.
+       **/
+      queueCount: u32 & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    identity: {
-      [key: string]: Codec;
      /**
-       * The amount held on deposit for a registered identity.
+       * The amount held on deposit for a registered identity
       **/
      basicDeposit: BalanceOf & AugmentedConst<ApiType>;
      /**
@@ -219,70 +334,114 @@ declare module '@polkadot/api/types/consts' {
       * another trie item whose value is the size of an account ID plus 32 bytes.
       **/
      subAccountDeposit: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    indices: {
-      [key: string]: Codec;
      /**
       * The deposit needed for reserving an index.
       **/
      deposit: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    lottery: {
-      [key: string]: Codec;
+      /**
+       * The max number of calls available in a single lottery.
+       **/
      maxCalls: u32 & AugmentedConst<ApiType>;
-      moduleId: ModuleId & AugmentedConst<ApiType>;
+      /**
+       * The Lottery's pallet id
+       **/
+      palletId: PalletId & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    multisig: {
-      [key: string]: Codec;
      /**
       * The base amount of currency needed to reserve for creating a multisig execution or to store
       * a dispatch call for later.
+       * 
+       * This is held for an additional storage item whose value size is
+       * `4 + sizeof((BlockNumber, Balance, AccountId))` bytes and whose key size is
+       * `32 + sizeof(AccountId)` bytes.
       **/
      depositBase: BalanceOf & AugmentedConst<ApiType>;
      /**
       * The amount of currency needed per unit threshold when creating a multisig execution.
+       * 
+       * This is held for adding 32 bytes more into a pre-existing storage value.
       **/
      depositFactor: BalanceOf & AugmentedConst<ApiType>;
      /**
-       * The maximum amount of signatories allowed for a given multisig.
+       * The maximum amount of signatories allowed in the multisig.
       **/
      maxSignatories: u16 & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    proxy: {
-      [key: string]: Codec;
      /**
-       * `AnnouncementDepositBase` metadata shadow.
+       * The base amount of currency needed to reserve for creating an announcement.
+       * 
+       * This is held when a new storage item holding a `Balance` is created (typically 16 bytes).
       **/
      announcementDepositBase: BalanceOf & AugmentedConst<ApiType>;
      /**
-       * `AnnouncementDepositFactor` metadata shadow.
+       * The amount of currency needed per announcement made.
+       * 
+       * This is held for adding an `AccountId`, `Hash` and `BlockNumber` (typically 68 bytes)
+       * into a pre-existing storage value.
       **/
      announcementDepositFactor: BalanceOf & AugmentedConst<ApiType>;
      /**
-       * `MaxPending` metadata shadow.
+       * The maximum amount of time-delayed announcements that are allowed to be pending.
       **/
      maxPending: u32 & AugmentedConst<ApiType>;
      /**
       * The maximum amount of proxies allowed for a single account.
       **/
-      maxProxies: u16 & AugmentedConst<ApiType>;
+      maxProxies: u32 & AugmentedConst<ApiType>;
      /**
       * The base amount of currency needed to reserve for creating a proxy.
+       * 
+       * This is held for an additional storage item whose value size is
+       * `sizeof(Balance)` bytes and whose key size is `sizeof(AccountId)` bytes.
       **/
      proxyDepositBase: BalanceOf & AugmentedConst<ApiType>;
      /**
       * The amount of currency needed per proxy added.
+       * 
+       * This is held for adding 32 bytes plus an instance of `ProxyType` more into a pre-existing
+       * storage value. Thus, when configuring `ProxyDepositFactor` one should take into account
+       * `32 + proxy_type.encode().len()` bytes of data.
       **/
      proxyDepositFactor: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    recovery: {
-      [key: string]: Codec;
      /**
       * The base amount of currency needed to reserve for creating a recovery configuration.
+       * 
+       * This is held for an additional storage item whose value size is
+       * `2 + sizeof(BlockNumber, Balance)` bytes.
       **/
      configDepositBase: BalanceOf & AugmentedConst<ApiType>;
      /**
       * The amount of currency needed per additional user when creating a recovery configuration.
+       * 
+       * This is held for adding `sizeof(AccountId)` bytes more into a pre-existing storage value.
       **/
      friendDepositFactor: BalanceOf & AugmentedConst<ApiType>;
      /**
@@ -291,11 +450,20 @@ declare module '@polkadot/api/types/consts' {
      maxFriends: u16 & AugmentedConst<ApiType>;
      /**
       * The base amount of currency needed to reserve for starting a recovery.
+       * 
+       * This is primarily held for deterring malicious recovery attempts, and should
+       * have a value large enough that a bad actor would choose not to place this
+       * deposit. It also acts to fund additional storage item whose value size is
+       * `sizeof(BlockNumber, Balance + T * AccountId)` bytes. Where T is a configurable
+       * threshold.
       **/
      recoveryDeposit: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    society: {
-      [key: string]: Codec;
      /**
       * The minimum amount of a deposit required for a bid to be made.
       **/
@@ -304,6 +472,10 @@ declare module '@polkadot/api/types/consts' {
       * The number of blocks between membership challenges.
       **/
      challengePeriod: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Maximum candidate intake per round.
+       **/
+      maxCandidateIntake: u32 & AugmentedConst<ApiType>;
      /**
       * The number of times a member may vote the wrong way (or not at all, when they are a skeptic)
       * before they become suspended.
@@ -312,7 +484,7 @@ declare module '@polkadot/api/types/consts' {
      /**
       * The societies's module id
       **/
-      moduleId: ModuleId & AugmentedConst<ApiType>;
+      palletId: PalletId & AugmentedConst<ApiType>;
      /**
       * The amount of incentive paid within each period. Doesn't include VoterTip.
       **/
@@ -326,29 +498,17 @@ declare module '@polkadot/api/types/consts' {
       * doesn't vote or someone votes in the wrong way.
       **/
      wrongSideDeduction: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    staking: {
-      [key: string]: Codec;
      /**
       * Number of eras that staked funds must remain bonded for.
       **/
      bondingDuration: EraIndex & AugmentedConst<ApiType>;
-      /**
-       * The number of blocks before the end of the era from which election submissions are allowed.
-       * 
-       * Setting this to zero will disable the offchain compute and only on-chain seq-phragmen will
-       * be used.
-       * 
-       * This is bounded by being within the last session. Hence, setting it to a value more than the
-       * length of a session will be pointless.
-       **/
-      electionLookahead: BlockNumber & AugmentedConst<ApiType>;
-      /**
-       * Maximum number of balancing iterations to run in the offchain submission.
-       * 
-       * If set to 0, balance_solution will not be executed at all.
-       **/
-      maxIterations: u32 & AugmentedConst<ApiType>;
+      maxNominations: u32 & AugmentedConst<ApiType>;
      /**
       * The maximum number of nominators rewarded for each validator.
       * 
@@ -356,10 +516,6 @@ declare module '@polkadot/api/types/consts' {
       * their reward. This used to limit the i/o cost for the nominator payout.
       **/
      maxNominatorRewardedPerValidator: u32 & AugmentedConst<ApiType>;
-      /**
-       * The threshold of improvement that should be provided for a new solution to be accepted.
-       **/
-      minSolutionScoreBump: Perbill & AugmentedConst<ApiType>;
      /**
       * Number of sessions per era.
       **/
@@ -367,14 +523,16 @@ declare module '@polkadot/api/types/consts' {
      /**
       * Number of eras that slashes are deferred by, after computation.
       * 
-       * This should be less than the bonding duration.
-       * Set to 0 if slashes should be applied immediately, without opportunity for
-       * intervention.
+       * This should be less than the bonding duration. Set to 0 if slashes
+       * should be applied immediately, without opportunity for intervention.
       **/
      slashDeferDuration: EraIndex & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    system: {
-      [key: string]: Codec;
      /**
       * Maximum number of block number to block hash mappings to keep (oldest pruned first).
       **/
@@ -398,14 +556,17 @@ declare module '@polkadot/api/types/consts' {
       * that the runtime should know about the prefix in order to make use of it as
       * an identifier of the chain.
       **/
-      ss58Prefix: u8 & AugmentedConst<ApiType>;
+      ss58Prefix: u16 & AugmentedConst<ApiType>;
      /**
       * Get the chain's current version.
       **/
      version: RuntimeVersion & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    timestamp: {
-      [key: string]: Codec;
      /**
       * The minimum period between blocks. Beware that this is different to the *expected* period
       * that the block production apparatus provides. Your chosen consensus system will generally
@@ -413,9 +574,12 @@ declare module '@polkadot/api/types/consts' {
       * period on default settings.
       **/
      minimumPeriod: Moment & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    tips: {
-      [key: string]: Codec;
      /**
       * The amount held on deposit per byte within the tip report reason.
       **/
@@ -436,9 +600,12 @@ declare module '@polkadot/api/types/consts' {
       * The amount held on deposit for placing a tip report.
       **/
      tipReportDepositBase: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    transactionPayment: {
-      [key: string]: Codec;
      /**
       * The fee to be paid for making a transaction; the per-byte portion.
       **/
@@ -447,9 +614,12 @@ declare module '@polkadot/api/types/consts' {
       * The polynomial that is applied in order to derive fee from weight.
       **/
      weightToFee: Vec<WeightToFeeCoefficient> & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    treasury: {
-      [key: string]: Codec;
      /**
       * Percentage of spare funds (if any) that are burnt per spend period.
       **/
@@ -457,7 +627,7 @@ declare module '@polkadot/api/types/consts' {
      /**
       * The treasury's module id, used for deriving its sovereign account ID.
       **/
-      moduleId: ModuleId & AugmentedConst<ApiType>;
+      palletId: PalletId & AugmentedConst<ApiType>;
      /**
       * Fraction of a proposal's value that should be bonded in order to place the proposal.
       * An accepted proposal gets these back. A rejected proposal does not.
@@ -471,13 +641,20 @@ declare module '@polkadot/api/types/consts' {
       * Period between successive spends.
       **/
      spendPeriod: BlockNumber & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
    vesting: {
-      [key: string]: Codec;
      /**
-       * The minimum amount to be transferred to create a new vesting schedule.
+       * The minimum amount transferred to call `vested_transfer`.
       **/
      minVestedTransfer: BalanceOf & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
    };
  }

@@ -6,19 +6,10 @@ import type { ApiTypes } from '@polkadot/api/types';
 declare module '@polkadot/api/types/errors' {
  export interface AugmentedErrors<ApiType> {
    assets: {
-      [key: string]: AugmentedError<ApiType>;
-      /**
-       * Transfer amount should be non-zero.
-       **/
-      AmountZero: AugmentedError<ApiType>;
      /**
       * Invalid metadata given.
       **/
      BadMetadata: AugmentedError<ApiType>;
-      /**
-       * Some internal state is broken.
-       **/
-      BadState: AugmentedError<ApiType>;
      /**
       * Invalid witness data given.
       **/
@@ -48,24 +39,27 @@ declare module '@polkadot/api/types/errors' {
       **/
      NoPermission: AugmentedError<ApiType>;
      /**
-       * A mint operation lead to an overflow.
+       * No provider reference exists to allow a non-zero balance of a non-self-sufficient asset.
       **/
-      Overflow: AugmentedError<ApiType>;
+      NoProvider: AugmentedError<ApiType>;
      /**
-       * Attempt to destroy an asset class when non-zombie, reference-bearing accounts exist.
+       * No approval exists that would allow the transfer.
       **/
-      RefsLeft: AugmentedError<ApiType>;
-      /**
-       * Too many zombie accounts in use.
-       **/
-      TooManyZombies: AugmentedError<ApiType>;
+      Unapproved: AugmentedError<ApiType>;
      /**
       * The given asset ID is unknown.
       **/
      Unknown: AugmentedError<ApiType>;
+      /**
+       * The source account would not survive the transfer and it needs to stay alive.
+       **/
+      WouldDie: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    authorship: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * The uncle is genesis.
       **/
@@ -94,9 +88,30 @@ declare module '@polkadot/api/types/errors' {
       * Uncles already set in the block.
       **/
      UnclesAlreadySet: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    babe: {
+      /**
+       * A given equivocation report is valid but already previously reported.
+       **/
+      DuplicateOffenceReport: AugmentedError<ApiType>;
+      /**
+       * An equivocation proof provided as part of an equivocation report is invalid.
+       **/
+      InvalidEquivocationProof: AugmentedError<ApiType>;
+      /**
+       * A key ownership proof provided as part of an equivocation report is invalid.
+       **/
+      InvalidKeyOwnershipProof: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    balances: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Beneficiary account must pre-exist
       **/
@@ -122,16 +137,19 @@ declare module '@polkadot/api/types/errors' {
       **/
      LiquidityRestrictions: AugmentedError<ApiType>;
      /**
-       * Got an overflow after adding
+       * Number of named reserves exceed MaxReserves
       **/
-      Overflow: AugmentedError<ApiType>;
+      TooManyReserves: AugmentedError<ApiType>;
      /**
       * Vesting balance too high to send value
       **/
      VestingBalance: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    bounties: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Proposer's balance is too low.
       **/
@@ -169,9 +187,12 @@ declare module '@polkadot/api/types/errors' {
       * The bounty status is unexpected.
       **/
      UnexpectedStatus: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    contracts: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Performing the requested transfer would have brought the contract below
       * the subsistence threshold. No transfer is allowed to do this in order to allow
@@ -184,20 +205,36 @@ declare module '@polkadot/api/types/errors' {
       **/
      CodeNotFound: AugmentedError<ApiType>;
      /**
-       * The code supplied to `put_code` exceeds the limit specified in the current schedule.
+       * The code supplied to `instantiate_with_code` exceeds the limit specified in the
+       * current schedule.
       **/
      CodeTooLarge: AugmentedError<ApiType>;
+      /**
+       * A tombstone exist at the specified address.
+       * 
+       * Tombstone cannot be called. Anyone can use `seal_restore_to` in order to revive
+       * the contract, though.
+       **/
+      ContractIsTombstone: AugmentedError<ApiType>;
      /**
       * A contract could not be evicted because it has enough balance to pay rent.
       * 
-       * This can be returned from [`Module::claim_surcharge`] because the target
+       * This can be returned from [`Pallet::claim_surcharge`] because the target
       * contract has enough balance to pay for its rent.
       **/
      ContractNotEvictable: AugmentedError<ApiType>;
+      /**
+       * No contract was found at the specified address.
+       **/
+      ContractNotFound: AugmentedError<ApiType>;
      /**
       * Contract trapped during execution.
       **/
      ContractTrapped: AugmentedError<ApiType>;
+      /**
+       * The debug message specified to `seal_debug_message` does contain invalid UTF-8.
+       **/
+      DebugMessageInvalidUTF8: AugmentedError<ApiType>;
      /**
       * Input passed to a contract API function failed to decode as expected type.
       **/
@@ -205,19 +242,23 @@ declare module '@polkadot/api/types/errors' {
      /**
       * Removal of a contract failed because the deletion queue is full.
       * 
-       * This can happen when either calling [`Module::claim_surcharge`] or `seal_terminate`.
+       * This can happen when either calling [`Pallet::claim_surcharge`] or `seal_terminate`.
       * The queue is filled by deleting contracts and emptied by a fixed amount each block.
       * Trying again during another block is the only way to resolve this issue.
       **/
      DeletionQueueFull: AugmentedError<ApiType>;
+      /**
+       * A contract with the same AccountId already exists.
+       **/
+      DuplicateContract: AugmentedError<ApiType>;
      /**
       * The topics passed to `seal_deposit_events` contains at least one duplicate.
       **/
      DuplicateTopics: AugmentedError<ApiType>;
      /**
-       * `seal_input` was called twice from the same contract execution context.
+       * `seal_call` forwarded this contracts input. It therefore is no longer available.
       **/
-      InputAlreadyRead: AugmentedError<ApiType>;
+      InputForwarded: AugmentedError<ApiType>;
      /**
       * An origin TrieId written in the current block.
       **/
@@ -258,11 +299,6 @@ declare module '@polkadot/api/types/errors' {
       * is rejected.
       **/
      NoChainExtension: AugmentedError<ApiType>;
-      /**
-       * The contract that was called is either no contract at all (a plain account)
-       * or is a tombstone.
-       **/
-      NotCallable: AugmentedError<ApiType>;
      /**
       * A buffer outside of sandbox memory was passed to a contract API function.
       **/
@@ -280,11 +316,18 @@ declare module '@polkadot/api/types/errors' {
       **/
      RandomSubjectTooLong: AugmentedError<ApiType>;
      /**
-       * The action performed is not allowed while the contract performing it is already
-       * on the call stack. Those actions are contract self destruction and restoration
-       * of a tombstone.
+       * A call tried to invoke a contract that is flagged as non-reentrant.
       **/
      ReentranceDenied: AugmentedError<ApiType>;
+      /**
+       * The called contract does not have enough balance to pay for its storage.
+       * 
+       * The contract ran out of balance and is therefore eligible for eviction into a
+       * tombstone. Anyone can evict the contract by submitting a `claim_surcharge`
+       * extrinsic. Alternatively, a plain balance transfer can be used in order to
+       * increase the contracts funds so that it can be called again.
+       **/
+      RentNotPaid: AugmentedError<ApiType>;
      /**
       * A storage modification exhausted the 32bit type that holds the storage size.
       * 
@@ -292,6 +335,17 @@ declare module '@polkadot/api/types/errors' {
       * when number of storage items is too large.
       **/
      StorageExhausted: AugmentedError<ApiType>;
+      /**
+       * A contract self destructed in its constructor.
+       * 
+       * This can be triggered by a call to `seal_terminate` or `seal_restore_to`.
+       **/
+      TerminatedInConstructor: AugmentedError<ApiType>;
+      /**
+       * Termination of a contract is not allowed while the contract is already
+       * on the call stack. Can be triggered by `seal_terminate` or `seal_restore_to.
+       **/
+      TerminatedWhileReentrant: AugmentedError<ApiType>;
      /**
       * The amount of topics passed to `seal_deposit_events` exceeds the limit.
       **/
@@ -306,9 +360,12 @@ declare module '@polkadot/api/types/errors' {
       * The size defined in `T::MaxValueSize` was exceeded.
       **/
      ValueTooLarge: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    council: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Members are already initialized!
       **/
@@ -349,9 +406,12 @@ declare module '@polkadot/api/types/errors' {
       * The given weight bound for the proposal was too low.
       **/
      WrongProposalWeight: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    democracy: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Cannot cancel the same proposal twice
       **/
@@ -444,10 +504,6 @@ declare module '@polkadot/api/types/errors' {
       * The given account did not vote on the referendum.
       **/
      NotVoter: AugmentedError<ApiType>;
-      /**
-       * An unexpected integer overflow occurred.
-       **/
-      Overflow: AugmentedError<ApiType>;
      /**
       * Invalid preimage
       **/
@@ -476,10 +532,6 @@ declare module '@polkadot/api/types/errors' {
       * Maximum number of proposals reached.
       **/
      TooManyProposals: AugmentedError<ApiType>;
-      /**
-       * An unexpected integer underflow occurred.
-       **/
-      Underflow: AugmentedError<ApiType>;
      /**
       * Value too low
       **/
@@ -493,9 +545,38 @@ declare module '@polkadot/api/types/errors' {
       * Invalid upper bound.
       **/
      WrongUpperBound: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    electionProviderMultiPhase: {
+      /**
+       * The call is not allowed at this point.
+       **/
+      CallNotAllowed: AugmentedError<ApiType>;
+      /**
+       * OCW submitted solution for wrong round
+       **/
+      OcwCallWrongEra: AugmentedError<ApiType>;
+      /**
+       * Submission was too early.
+       **/
+      PreDispatchEarlySubmission: AugmentedError<ApiType>;
+      /**
+       * Submission was too weak, score-wise.
+       **/
+      PreDispatchWeakSubmission: AugmentedError<ApiType>;
+      /**
+       * Wrong number of winners presented.
+       **/
+      PreDispatchWrongWinnerCount: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    elections: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Duplicated candidate submission.
       **/
@@ -564,9 +645,51 @@ declare module '@polkadot/api/types/errors' {
       * Cannot vote when no candidates or members exist.
       **/
      UnableToVote: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    gilt: {
+      /**
+       * The amount of the bid is less than the minimum allowed.
+       **/
+      AmountTooSmall: AugmentedError<ApiType>;
+      /**
+       * The queue for the bid's duration is full and the amount bid is too low to get in through
+       * replacing an existing bid.
+       **/
+      BidTooLow: AugmentedError<ApiType>;
+      /**
+       * The duration is the bid is greater than the number of queues.
+       **/
+      DurationTooBig: AugmentedError<ApiType>;
+      /**
+       * The duration of the bid is less than one.
+       **/
+      DurationTooSmall: AugmentedError<ApiType>;
+      /**
+       * Gilt not yet at expiry date.
+       **/
+      NotExpired: AugmentedError<ApiType>;
+      /**
+       * The given bid for retraction is not found.
+       **/
+      NotFound: AugmentedError<ApiType>;
+      /**
+       * Not the owner of the gilt.
+       **/
+      NotOwner: AugmentedError<ApiType>;
+      /**
+       * Gilt index is unknown.
+       **/
+      Unknown: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    grandpa: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Attempt to signal GRANDPA change with one already pending.
       **/
@@ -597,9 +720,12 @@ declare module '@polkadot/api/types/errors' {
       * Cannot signal forced change so soon after last.
       **/
      TooSoon: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    identity: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Account ID is already named.
       **/
@@ -664,9 +790,12 @@ declare module '@polkadot/api/types/errors' {
       * Too many subs-accounts.
       **/
      TooManySubAccounts: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    imOnline: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Duplicated heartbeat.
       **/
@@ -675,9 +804,72 @@ declare module '@polkadot/api/types/errors' {
       * Non existent public key.
       **/
      InvalidKey: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    indices: {
+      /**
+       * The index was not available.
+       **/
+      InUse: AugmentedError<ApiType>;
+      /**
+       * The index was not already assigned.
+       **/
+      NotAssigned: AugmentedError<ApiType>;
+      /**
+       * The index is assigned to another account.
+       **/
+      NotOwner: AugmentedError<ApiType>;
+      /**
+       * The source and destination accounts are identical.
+       **/
+      NotTransfer: AugmentedError<ApiType>;
+      /**
+       * The index is permanent and may not be freed/changed.
+       **/
+      Permanent: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    lottery: {
+      /**
+       * A lottery has already ended.
+       **/
+      AlreadyEnded: AugmentedError<ApiType>;
+      /**
+       * You are already participating in the lottery with this call.
+       **/
+      AlreadyParticipating: AugmentedError<ApiType>;
+      /**
+       * Failed to encode calls
+       **/
+      EncodingFailed: AugmentedError<ApiType>;
+      /**
+       * A lottery is already in progress.
+       **/
+      InProgress: AugmentedError<ApiType>;
+      /**
+       * The call is not valid for an open lottery.
+       **/
+      InvalidCall: AugmentedError<ApiType>;
+      /**
+       * A lottery has not been configured.
+       **/
+      NotConfigured: AugmentedError<ApiType>;
+      /**
+       * Too many calls for a single lottery.
+       **/
+      TooManyCalls: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    multisig: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Call is already approved by this signatory.
       **/
@@ -686,6 +878,10 @@ declare module '@polkadot/api/types/errors' {
       * The data to be stored is already stored.
       **/
      AlreadyStored: AugmentedError<ApiType>;
+      /**
+       * The maximum weight information provided was too low.
+       **/
+      MaxWeightTooLow: AugmentedError<ApiType>;
      /**
       * Threshold must be 2 or greater.
       **/
@@ -726,17 +922,16 @@ declare module '@polkadot/api/types/errors' {
       * A timepoint was given, yet no multisig operation is underway.
       **/
      UnexpectedTimepoint: AugmentedError<ApiType>;
-      /**
-       * The maximum weight information provided was too low.
-       **/
-      WeightTooLow: AugmentedError<ApiType>;
      /**
       * A different timepoint was given to the multisig operation that is underway.
       **/
      WrongTimepoint: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    proxy: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Account is already a proxy.
       **/
@@ -769,9 +964,12 @@ declare module '@polkadot/api/types/errors' {
       * A call which is incompatible with the proxy type's filter was attempted.
       **/
      Unproxyable: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    recovery: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * This account is already set up for recovery
       **/
@@ -824,10 +1022,6 @@ declare module '@polkadot/api/types/errors' {
       * A recovery process has not started for this rescuer
       **/
      NotStarted: AugmentedError<ApiType>;
-      /**
-       * There was an overflow in a calculation
-       **/
-      Overflow: AugmentedError<ApiType>;
      /**
       * There are still active recovery attempts that need to be closed
       **/
@@ -840,9 +1034,12 @@ declare module '@polkadot/api/types/errors' {
       * Threshold must be greater than zero
       **/
      ZeroThreshold: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    scheduler: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Failed to schedule a call
       **/
@@ -859,9 +1056,12 @@ declare module '@polkadot/api/types/errors' {
       * Given target block number is in the past.
       **/
      TargetBlockNumberInPast: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    session: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Registered duplicate key.
       **/
@@ -882,9 +1082,12 @@ declare module '@polkadot/api/types/errors' {
       * No keys are associated with this account.
       **/
      NoKeys: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    society: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * User has already made a bid.
       **/
@@ -957,9 +1160,12 @@ declare module '@polkadot/api/types/errors' {
       * User is suspended.
       **/
      Suspended: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    staking: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Stash is already bonded.
       **/
@@ -981,9 +1187,9 @@ declare module '@polkadot/api/types/errors' {
       **/
      BadTarget: AugmentedError<ApiType>;
      /**
-       * The call is not allowed at the given time due to restrictions of election period.
+       * The user has enough bond and thus cannot be chilled forcefully by an external person.
       **/
-      CallNotAllowed: AugmentedError<ApiType>;
+      CannotChillOther: AugmentedError<ApiType>;
      /**
       * Duplicate index.
       **/
@@ -1005,9 +1211,9 @@ declare module '@polkadot/api/types/errors' {
       **/
      IncorrectSlashingSpans: AugmentedError<ApiType>;
      /**
-       * Can not bond with value less than minimum balance.
+       * Can not bond with value less than minimum required.
       **/
-      InsufficientValue: AugmentedError<ApiType>;
+      InsufficientBond: AugmentedError<ApiType>;
      /**
       * Invalid era to reward.
       **/
@@ -1041,74 +1247,35 @@ declare module '@polkadot/api/types/errors' {
       **/
      NoUnlockChunk: AugmentedError<ApiType>;
      /**
-       * Error while building the assignment type from the compact. This can happen if an index
-       * is invalid, or if the weights _overflow_.
+       * There are too many nominators in the system. Governance needs to adjust the staking settings
+       * to keep things safe for the runtime.
       **/
-      OffchainElectionBogusCompact: AugmentedError<ApiType>;
-      /**
-       * The submitted result has unknown edges that are not among the presented winners.
-       **/
-      OffchainElectionBogusEdge: AugmentedError<ApiType>;
-      /**
-       * The election size is invalid.
-       **/
-      OffchainElectionBogusElectionSize: AugmentedError<ApiType>;
-      /**
-       * One of the submitted nominators has an edge to which they have not voted on chain.
-       **/
-      OffchainElectionBogusNomination: AugmentedError<ApiType>;
-      /**
-       * One of the submitted nominators is not an active nominator on chain.
-       **/
-      OffchainElectionBogusNominator: AugmentedError<ApiType>;
-      /**
-       * The claimed score does not match with the one computed from the data.
-       **/
-      OffchainElectionBogusScore: AugmentedError<ApiType>;
-      /**
-       * A self vote must only be originated from a validator to ONLY themselves.
-       **/
-      OffchainElectionBogusSelfVote: AugmentedError<ApiType>;
-      /**
-       * One of the submitted winners is not an active candidate on chain (index is out of range
-       * in snapshot).
-       **/
-      OffchainElectionBogusWinner: AugmentedError<ApiType>;
-      /**
-       * Incorrect number of winners were presented.
-       **/
-      OffchainElectionBogusWinnerCount: AugmentedError<ApiType>;
-      /**
-       * The submitted result is received out of the open window.
-       **/
-      OffchainElectionEarlySubmission: AugmentedError<ApiType>;
-      /**
-       * One of the submitted nominators has an edge which is submitted before the last non-zero
-       * slash of the target.
-       **/
-      OffchainElectionSlashedNomination: AugmentedError<ApiType>;
-      /**
-       * The submitted result is not as good as the one stored on chain.
-       **/
-      OffchainElectionWeakSubmission: AugmentedError<ApiType>;
-      /**
-       * The snapshot data of the current window is missing.
-       **/
-      SnapshotUnavailable: AugmentedError<ApiType>;
+      TooManyNominators: AugmentedError<ApiType>;
      /**
       * Too many nomination targets supplied.
       **/
      TooManyTargets: AugmentedError<ApiType>;
+      /**
+       * There are too many validators in the system. Governance needs to adjust the staking settings
+       * to keep things safe for the runtime.
+       **/
+      TooManyValidators: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    sudo: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Sender must be the Sudo account
       **/
      RequireSudo: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    system: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Failed to extract the runtime version from the new runtime.
       * 
@@ -1133,9 +1300,12 @@ declare module '@polkadot/api/types/errors' {
       * and the new runtime.
       **/
      SpecVersionNeedsToIncrease: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    technicalCommittee: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Members are already initialized!
       **/
@@ -1176,9 +1346,26 @@ declare module '@polkadot/api/types/errors' {
       * The given weight bound for the proposal was too low.
       **/
      WrongProposalWeight: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    technicalMembership: {
+      /**
+       * Already a member.
+       **/
+      AlreadyMember: AugmentedError<ApiType>;
+      /**
+       * Not a member.
+       **/
+      NotMember: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    tips: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * The tip was already found/started.
       **/
@@ -1203,9 +1390,70 @@ declare module '@polkadot/api/types/errors' {
       * The tip hash is unknown.
       **/
      UnknownTip: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    transactionStorage: {
+      /**
+       * Attempted to call `store` outside of block execution.
+       **/
+      BadContext: AugmentedError<ApiType>;
+      /**
+       * Double proof check in the block.
+       **/
+      DoubleCheck: AugmentedError<ApiType>;
+      /**
+       * Attempting to store empty transaction
+       **/
+      EmptyTransaction: AugmentedError<ApiType>;
+      /**
+       * Insufficient account balance.
+       **/
+      InsufficientFunds: AugmentedError<ApiType>;
+      /**
+       * Proof failed verification.
+       **/
+      InvalidProof: AugmentedError<ApiType>;
+      /**
+       * Missing storage proof.
+       **/
+      MissingProof: AugmentedError<ApiType>;
+      /**
+       * Unable to verify proof becasue state data is missing.
+       **/
+      MissingStateData: AugmentedError<ApiType>;
+      /**
+       * Invalid configuration.
+       **/
+      NotConfigured: AugmentedError<ApiType>;
+      /**
+       * Storage proof was not checked in the block.
+       **/
+      ProofNotChecked: AugmentedError<ApiType>;
+      /**
+       * Renewed extrinsic is not found.
+       **/
+      RenewedNotFound: AugmentedError<ApiType>;
+      /**
+       * Too many transactions in the block.
+       **/
+      TooManyTransactions: AugmentedError<ApiType>;
+      /**
+       * Transaction is too large.
+       **/
+      TransactionTooLarge: AugmentedError<ApiType>;
+      /**
+       * Proof was not expected in this block.
+       **/
+      UnexpectedProof: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    treasury: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Proposer's balance is too low.
       **/
@@ -1214,9 +1462,62 @@ declare module '@polkadot/api/types/errors' {
       * No proposal or bounty at that index.
       **/
      InvalidIndex: AugmentedError<ApiType>;
+      /**
+       * Too many approvals in the queue.
+       **/
+      TooManyApprovals: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
+    uniques: {
+      /**
+       * The asset instance ID has already been used for an asset.
+       **/
+      AlreadyExists: AugmentedError<ApiType>;
+      /**
+       * Invalid witness data given.
+       **/
+      BadWitness: AugmentedError<ApiType>;
+      /**
+       * The asset instance or class is frozen.
+       **/
+      Frozen: AugmentedError<ApiType>;
+      /**
+       * The asset ID is already taken.
+       **/
+      InUse: AugmentedError<ApiType>;
+      /**
+       * There is no delegate approved.
+       **/
+      NoDelegate: AugmentedError<ApiType>;
+      /**
+       * The signing account has no permission to do the operation.
+       **/
+      NoPermission: AugmentedError<ApiType>;
+      /**
+       * No approval exists that would allow the transfer.
+       **/
+      Unapproved: AugmentedError<ApiType>;
+      /**
+       * The given asset ID is unknown.
+       **/
+      Unknown: AugmentedError<ApiType>;
+      /**
+       * The delegate turned out to be different to what was expected.
+       **/
+      WrongDelegate: AugmentedError<ApiType>;
+      /**
+       * The owner turned out to be different to what was expected.
+       **/
+      WrongOwner: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
    vesting: {
-      [key: string]: AugmentedError<ApiType>;
      /**
       * Amount being transferred is too low to create a vesting schedule.
       **/
@@ -1229,6 +1530,10 @@ declare module '@polkadot/api/types/errors' {
       * The account given is not vesting.
       **/
      NotVesting: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
    };
  }

@@ -9,28 +9,44 @@ import type { MemberCount, ProposalIndex } from '@polkadot/types/interfaces/coll
 import type { AuthorityId } from '@polkadot/types/interfaces/consensus';
 import type { PropIndex, ReferendumIndex } from '@polkadot/types/interfaces/democracy';
 import type { VoteThreshold } from '@polkadot/types/interfaces/elections';
+import type { ActiveIndex } from '@polkadot/types/interfaces/gilt';
 import type { AuthorityList } from '@polkadot/types/interfaces/grandpa';
 import type { RegistrarIndex } from '@polkadot/types/interfaces/identity';
 import type { CallIndex } from '@polkadot/types/interfaces/lottery';
 import type { Kind, OpaqueTimeSlot } from '@polkadot/types/interfaces/offences';
 import type { ProxyType } from '@polkadot/types/interfaces/proxy';
-import type { AccountId, AccountIndex, AssetId, Balance, BlockNumber, CallHash, Hash, PhantomData } from '@polkadot/types/interfaces/runtime';
+import type { AccountId, AccountIndex, AssetId, Balance, BalanceOf, BlockNumber, CallHash, Hash, PhantomData } from '@polkadot/types/interfaces/runtime';
 import type { TaskAddress } from '@polkadot/types/interfaces/scheduler';
 import type { IdentificationTuple, SessionIndex } from '@polkadot/types/interfaces/session';
 import type { ElectionCompute, EraIndex } from '@polkadot/types/interfaces/staking';
 import type { DispatchError, DispatchInfo, DispatchResult } from '@polkadot/types/interfaces/system';
 import type { BountyIndex } from '@polkadot/types/interfaces/treasury';
+import type { ClassId, InstanceId } from '@polkadot/types/interfaces/uniques';
 import type { Timepoint } from '@polkadot/types/interfaces/utility';
 import type { ApiTypes } from '@polkadot/api/types';

 declare module '@polkadot/api/types/events' {
  export interface AugmentedEvents<ApiType> {
    assets: {
-      [key: string]: AugmentedEvent<ApiType>;
+      /**
+       * An approval for account `delegate` was cancelled by `owner`.
+       * \[id, owner, delegate\]
+       **/
+      ApprovalCancelled: AugmentedEvent<ApiType, [AssetId, AccountId, AccountId]>;
+      /**
+       * (Additional) funds have been approved for transfer to a destination account.
+       * \[asset_id, source, delegate, amount\]
+       **/
+      ApprovedTransfer: AugmentedEvent<ApiType, [AssetId, AccountId, AccountId, TAssetBalance]>;
      /**
       * Some asset `asset_id` was frozen. \[asset_id\]
       **/
      AssetFrozen: AugmentedEvent<ApiType, [AssetId]>;
+      /**
+       * An asset has had its attributes changed by the `Force` origin.
+       * \[id\]
+       **/
+      AssetStatusChanged: AugmentedEvent<ApiType, [AssetId]>;
      /**
       * Some asset `asset_id` was thawed. \[asset_id\]
       **/
@@ -51,10 +67,6 @@ declare module '@polkadot/api/types/events' {
       * Some asset class was force-created. \[asset_id, owner\]
       **/
      ForceCreated: AugmentedEvent<ApiType, [AssetId, AccountId]>;
-      /**
-       * Some assets was transferred by an admin. \[asset_id, from, to, amount\]
-       **/
-      ForceTransferred: AugmentedEvent<ApiType, [AssetId, AccountId, AccountId, TAssetBalance]>;
      /**
       * Some account `who` was frozen. \[asset_id, who\]
       **/
@@ -64,13 +76,13 @@ declare module '@polkadot/api/types/events' {
       **/
      Issued: AugmentedEvent<ApiType, [AssetId, AccountId, TAssetBalance]>;
      /**
-       * The maximum amount of zombies allowed has changed. \[asset_id, max_zombies\]
+       * Metadata has been cleared for an asset. \[asset_id\]
       **/
-      MaxZombiesChanged: AugmentedEvent<ApiType, [AssetId, u32]>;
+      MetadataCleared: AugmentedEvent<ApiType, [AssetId]>;
      /**
-       * New metadata has been set for an asset. \[asset_id, name, symbol, decimals\]
+       * New metadata has been set for an asset. \[asset_id, name, symbol, decimals, is_frozen\]
       **/
-      MetadataSet: AugmentedEvent<ApiType, [AssetId, Bytes, Bytes, u8]>;
+      MetadataSet: AugmentedEvent<ApiType, [AssetId, Bytes, Bytes, u8, bool]>;
      /**
       * The owner changed \[asset_id, owner\]
       **/
@@ -87,9 +99,18 @@ declare module '@polkadot/api/types/events' {
       * Some assets were transferred. \[asset_id, from, to, amount\]
       **/
      Transferred: AugmentedEvent<ApiType, [AssetId, AccountId, AccountId, TAssetBalance]>;
+      /**
+       * An `amount` was transferred in its entirety from `owner` to `destination` by
+       * the approved `delegate`.
+       * \[id, owner, delegate, destination\]
+       **/
+      TransferredApproved: AugmentedEvent<ApiType, [AssetId, AccountId, AccountId, AccountId, TAssetBalance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    balances: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A balance was set by root. \[who, free, reserved\]
       **/
@@ -125,9 +146,12 @@ declare module '@polkadot/api/types/events' {
       * Some balance was unreserved (moved from reserved to free). \[who, value\]
       **/
      Unreserved: AugmentedEvent<ApiType, [AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    bounties: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A bounty is awarded to a beneficiary. \[index, beneficiary\]
       **/
@@ -156,52 +180,84 @@ declare module '@polkadot/api/types/events' {
       * A bounty proposal was rejected; funds were slashed. \[index, bond\]
       **/
      BountyRejected: AugmentedEvent<ApiType, [BountyIndex, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    contracts: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
-       * Code with the specified hash has been stored.
+       * A code with the specified hash was removed.
       * \[code_hash\]
+       * 
+       * This happens when the last contract that uses this code hash was removed or evicted.
+       **/
+      CodeRemoved: AugmentedEvent<ApiType, [Hash]>;
+      /**
+       * Code with the specified hash has been stored. \[code_hash\]
       **/
      CodeStored: AugmentedEvent<ApiType, [Hash]>;
      /**
-       * An event deposited upon execution of a contract from the account.
-       * \[account, data\]
-       **/
-      ContractExecution: AugmentedEvent<ApiType, [AccountId, Bytes]>;
-      /**
-       * Contract has been evicted and is now in tombstone state.
-       * \[contract, tombstone\]
+       * A custom event emitted by the contract.
+       * \[contract, data\]
       * 
       * # Params
       * 
-       * - `contract`: `AccountId`: The account ID of the evicted contract.
-       * - `tombstone`: `bool`: True if the evicted contract left behind a tombstone.
+       * - `contract`: The contract that emitted the event.
+       * - `data`: Data supplied by the contract. Metadata generated during contract
+       * compilation is needed to decode it.
       **/
-      Evicted: AugmentedEvent<ApiType, [AccountId, bool]>;
+      ContractEmitted: AugmentedEvent<ApiType, [AccountId, Bytes]>;
      /**
-       * Contract deployed by address at the specified address. \[owner, contract\]
+       * Contract has been evicted and is now in tombstone state. \[contract\]
+       **/
+      Evicted: AugmentedEvent<ApiType, [AccountId]>;
+      /**
+       * Contract deployed by address at the specified address. \[deployer, contract\]
       **/
      Instantiated: AugmentedEvent<ApiType, [AccountId, AccountId]>;
      /**
-       * Restoration for a contract has been successful.
-       * \[donor, dest, code_hash, rent_allowance\]
+       * Restoration of a contract has been successful.
+       * \[restorer, dest, code_hash, rent_allowance\]
       * 
       * # Params
       * 
-       * - `donor`: `AccountId`: Account ID of the restoring contract
-       * - `dest`: `AccountId`: Account ID of the restored contract
-       * - `code_hash`: `Hash`: Code hash of the restored contract
-       * - `rent_allowance: `Balance`: Rent allowance of the restored contract
+       * - `restorer`: Account ID of the restoring contract.
+       * - `dest`: Account ID of the restored contract.
+       * - `code_hash`: Code hash of the restored contract.
+       * - `rent_allowance`: Rent allowance of the restored contract.
       **/
      Restored: AugmentedEvent<ApiType, [AccountId, AccountId, Hash, Balance]>;
      /**
-       * Triggered when the current \[schedule\] is updated.
+       * Triggered when the current schedule is updated.
+       * \[version\]
+       * 
+       * # Params
+       * 
+       * - `version`: The version of the newly set schedule.
       **/
      ScheduleUpdated: AugmentedEvent<ApiType, [u32]>;
+      /**
+       * Contract has been terminated without leaving a tombstone.
+       * \[contract, beneficiary\]
+       * 
+       * # Params
+       * 
+       * - `contract`: The contract that was terminated.
+       * - `beneficiary`: The account that received the contracts remaining balance.
+       * 
+       * # Note
+       * 
+       * The only way for a contract to be removed without a tombstone and emitting
+       * this event is by calling `seal_terminate`.
+       **/
+      Terminated: AugmentedEvent<ApiType, [AccountId, AccountId]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    council: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A motion was approved by the required threshold.
       * \[proposal_hash\]
@@ -239,9 +295,12 @@ declare module '@polkadot/api/types/events' {
       * \[account, proposal_hash, voted, yes, no\]
       **/
      Voted: AugmentedEvent<ApiType, [AccountId, Hash, bool, MemberCount, MemberCount]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    democracy: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A proposal \[hash\] has been blacklisted permanently.
       **/
@@ -318,9 +377,46 @@ declare module '@polkadot/api/types/events' {
       * An external proposal has been vetoed. \[who, proposal_hash, until\]
       **/
      Vetoed: AugmentedEvent<ApiType, [AccountId, Hash, BlockNumber]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
+    };
+    electionProviderMultiPhase: {
+      /**
+       * The election has been finalized, with `Some` of the given computation, or else if the
+       * election failed, `None`.
+       **/
+      ElectionFinalized: AugmentedEvent<ApiType, [Option<ElectionCompute>]>;
+      /**
+       * An account has been rewarded for their signed submission being finalized.
+       **/
+      Rewarded: AugmentedEvent<ApiType, [AccountId]>;
+      /**
+       * The signed phase of the given round has started.
+       **/
+      SignedPhaseStarted: AugmentedEvent<ApiType, [u32]>;
+      /**
+       * An account has been slashed for submitting an invalid signed submission.
+       **/
+      Slashed: AugmentedEvent<ApiType, [AccountId]>;
+      /**
+       * A solution was stored with the given compute.
+       * 
+       * If the solution is signed, this means that it hasn't yet been processed. If the
+       * solution is unsigned, this means that it has also been processed.
+       **/
+      SolutionStored: AugmentedEvent<ApiType, [ElectionCompute]>;
+      /**
+       * The unsigned phase of the given round has started.
+       **/
+      UnsignedPhaseStarted: AugmentedEvent<ApiType, [u32]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    elections: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A \[candidate\] was slashed by \[amount\] due to failing to obtain a seat as member or
       * runner-up.
@@ -343,10 +439,11 @@ declare module '@polkadot/api/types/events' {
       **/
      MemberKicked: AugmentedEvent<ApiType, [AccountId]>;
      /**
-       * A new term with \[new_members\]. This indicates that enough candidates existed to run the
-       * election, not that enough have has been elected. The inner value must be examined for
-       * this purpose. A `NewTerm(\[\])` indicates that some candidates got their bond slashed and
-       * none were elected, whilst `EmptyTerm` means that no candidates existed to begin with.
+       * A new term with \[new_members\]. This indicates that enough candidates existed to run
+       * the election, not that enough have has been elected. The inner value must be examined
+       * for this purpose. A `NewTerm(\[\])` indicates that some candidates got their bond
+       * slashed and none were elected, whilst `EmptyTerm` means that no candidates existed to
+       * begin with.
       **/
      NewTerm: AugmentedEvent<ApiType, [Vec<ITuple<[AccountId, Balance]>>]>;
      /**
@@ -357,9 +454,38 @@ declare module '@polkadot/api/types/events' {
       * A \[seat holder\] was slashed by \[amount\] by being forcefully removed from the set.
       **/
      SeatHolderSlashed: AugmentedEvent<ApiType, [AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
+    };
+    gilt: {
+      /**
+       * A bid was successfully placed.
+       * \[ who, amount, duration \]
+       **/
+      BidPlaced: AugmentedEvent<ApiType, [AccountId, BalanceOf, u32]>;
+      /**
+       * A bid was successfully removed (before being accepted as a gilt).
+       * \[ who, amount, duration \]
+       **/
+      BidRetracted: AugmentedEvent<ApiType, [AccountId, BalanceOf, u32]>;
+      /**
+       * A bid was accepted as a gilt. The balance may not be released until expiry.
+       * \[ index, expiry, who, amount \]
+       **/
+      GiltIssued: AugmentedEvent<ApiType, [ActiveIndex, BlockNumber, AccountId, BalanceOf]>;
+      /**
+       * An expired gilt has been thawed.
+       * \[ index, who, original_amount, additional_amount \]
+       **/
+      GiltThawed: AugmentedEvent<ApiType, [ActiveIndex, AccountId, BalanceOf, BalanceOf]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    grandpa: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * New authority set has been applied. \[authority_set\]
       **/
@@ -372,9 +498,12 @@ declare module '@polkadot/api/types/events' {
       * Current authority set has been resumed.
       **/
      Resumed: AugmentedEvent<ApiType, []>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    identity: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A name was cleared, and the given balance returned. \[who, deposit\]
       **/
@@ -417,9 +546,12 @@ declare module '@polkadot/api/types/events' {
       * main identity account to the sub-identity account. \[sub, main, deposit\]
       **/
      SubIdentityRevoked: AugmentedEvent<ApiType, [AccountId, AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    imOnline: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * At the end of the session, no offence was committed.
       **/
@@ -432,9 +564,12 @@ declare module '@polkadot/api/types/events' {
       * At the end of the session, at least one validator was found to be \[offline\].
       **/
      SomeOffline: AugmentedEvent<ApiType, [Vec<IdentificationTuple>]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    indices: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A account index was assigned. \[index, who\]
       **/
@@ -447,9 +582,12 @@ declare module '@polkadot/api/types/events' {
       * A account index has been frozen to its current account ID. \[index, who\]
       **/
      IndexFrozen: AugmentedEvent<ApiType, [AccountIndex, AccountId]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    lottery: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A new set of calls have been set!
       **/
@@ -466,9 +604,12 @@ declare module '@polkadot/api/types/events' {
       * A winner has been chosen!
       **/
      Winner: AugmentedEvent<ApiType, [AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    multisig: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A multisig operation has been approved by someone.
       * \[approving, timepoint, multisig, call_hash\]
@@ -486,19 +627,24 @@ declare module '@polkadot/api/types/events' {
       * A new multisig operation has begun. \[approving, multisig, call_hash\]
       **/
      NewMultisig: AugmentedEvent<ApiType, [AccountId, AccountId, CallHash]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    offences: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * There is an offence reported of the given `kind` happened at the `session_index` and
-       * (kind-specific) time slot. This event is not deposited for duplicate slashes. last
-       * element indicates of the offence was applied (true) or queued (false)
-       * \[kind, timeslot, applied\].
+       * (kind-specific) time slot. This event is not deposited for duplicate slashes.
+       * \[kind, timeslot\].
       **/
-      Offence: AugmentedEvent<ApiType, [Kind, OpaqueTimeSlot, bool]>;
+      Offence: AugmentedEvent<ApiType, [Kind, OpaqueTimeSlot]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    proxy: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * An announcement was placed to make a call in the future. \[real, proxy, call_hash\]
       **/
@@ -512,9 +658,12 @@ declare module '@polkadot/api/types/events' {
       * A proxy was executed correctly, with the given \[result\].
       **/
      ProxyExecuted: AugmentedEvent<ApiType, [DispatchResult]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    recovery: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * Lost account has been successfully recovered by rescuer account.
       * \[lost, rescuer\]
@@ -543,9 +692,12 @@ declare module '@polkadot/api/types/events' {
       * \[lost, rescuer, sender\]
       **/
      RecoveryVouched: AugmentedEvent<ApiType, [AccountId, AccountId, AccountId]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    scheduler: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * Canceled some task. \[when, index\]
       **/
@@ -558,17 +710,23 @@ declare module '@polkadot/api/types/events' {
       * Scheduled some task. \[when, index\]
       **/
      Scheduled: AugmentedEvent<ApiType, [BlockNumber, u32]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    session: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * New session has happened. Note that the argument is the \[session_index\], not the block
       * number as the type might suggest.
       **/
      NewSession: AugmentedEvent<ApiType, [SessionIndex]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    society: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A \[candidate\] was dropped (due to an excess of bids in the system).
       **/
@@ -636,9 +794,12 @@ declare module '@polkadot/api/types/events' {
       * their offer is the second. The vouching party is the third. \[candidate_id, offer, vouching\]
       **/
      Vouch: AugmentedEvent<ApiType, [AccountId, Balance, AccountId]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    staking: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * An account has bonded this amount. \[stash, amount\]
       * 
@@ -671,13 +832,13 @@ declare module '@polkadot/api/types/events' {
       **/
      Slash: AugmentedEvent<ApiType, [AccountId, Balance]>;
      /**
-       * A new solution for the upcoming election has been stored. \[compute\]
+       * A new set of stakers was elected.
       **/
-      SolutionStored: AugmentedEvent<ApiType, [ElectionCompute]>;
+      StakingElection: AugmentedEvent<ApiType, []>;
      /**
-       * A new set of stakers was elected with the given \[compute\].
+       * The election failed. No new era is planned.
       **/
-      StakingElection: AugmentedEvent<ApiType, [ElectionCompute]>;
+      StakingElectionFailed: AugmentedEvent<ApiType, []>;
      /**
       * An account has unbonded this amount. \[stash, amount\]
       **/
@@ -687,9 +848,12 @@ declare module '@polkadot/api/types/events' {
       * from the unlocking queue. \[stash, amount\]
       **/
      Withdrawn: AugmentedEvent<ApiType, [AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    sudo: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * The \[sudoer\] just switched identity; the old key is supplied.
       **/
@@ -702,9 +866,12 @@ declare module '@polkadot/api/types/events' {
       * A sudo just took place. \[result\]
       **/
      SudoAsDone: AugmentedEvent<ApiType, [DispatchResult]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    system: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * `:code` was updated.
       **/
@@ -725,9 +892,16 @@ declare module '@polkadot/api/types/events' {
       * A new \[account\] was created.
       **/
      NewAccount: AugmentedEvent<ApiType, [AccountId]>;
+      /**
+       * On on-chain remark happened. \[origin, remark_hash\]
+       **/
+      Remarked: AugmentedEvent<ApiType, [AccountId, Hash]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    technicalCommittee: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A motion was approved by the required threshold.
       * \[proposal_hash\]
@@ -765,9 +939,12 @@ declare module '@polkadot/api/types/events' {
       * \[account, proposal_hash, voted, yes, no\]
       **/
      Voted: AugmentedEvent<ApiType, [AccountId, Hash, bool, MemberCount, MemberCount]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    technicalMembership: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * Phantom member, never used.
       **/
@@ -792,9 +969,12 @@ declare module '@polkadot/api/types/events' {
       * Two members were swapped; see the transaction for who.
       **/
      MembersSwapped: AugmentedEvent<ApiType, []>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    tips: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * A new tip suggestion has been opened. \[tip_hash\]
       **/
@@ -815,9 +995,30 @@ declare module '@polkadot/api/types/events' {
       * A tip suggestion has been slashed. \[tip_hash, finder, deposit\]
       **/
      TipSlashed: AugmentedEvent<ApiType, [Hash, AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
+    };
+    transactionStorage: {
+      /**
+       * Storage proof was successfully checked.
+       **/
+      ProofChecked: AugmentedEvent<ApiType, []>;
+      /**
+       * Renewed data under specified index.
+       **/
+      Renewed: AugmentedEvent<ApiType, [u32]>;
+      /**
+       * Stored data under specified index.
+       **/
+      Stored: AugmentedEvent<ApiType, [u32]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    treasury: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * Some funds have been allocated. \[proposal_index, award, beneficiary\]
       **/
@@ -847,9 +1048,114 @@ declare module '@polkadot/api/types/events' {
       * We have ended a spend period and will now allocate funds. \[budget_remaining\]
       **/
      Spending: AugmentedEvent<ApiType, [Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
+    };
+    uniques: {
+      /**
+       * An approval for a `delegate` account to transfer the `instance` of an asset `class` was
+       * cancelled by its `owner`.
+       * \[ class, instance, owner, delegate \]
+       **/
+      ApprovalCancelled: AugmentedEvent<ApiType, [ClassId, InstanceId, AccountId, AccountId]>;
+      /**
+       * An `instance` of an asset `class` has been approved by the `owner` for transfer by a
+       * `delegate`.
+       * \[ class, instance, owner, delegate \]
+       **/
+      ApprovedTransfer: AugmentedEvent<ApiType, [ClassId, InstanceId, AccountId, AccountId]>;
+      /**
+       * An asset `class` has had its attributes changed by the `Force` origin.
+       * \[ class \]
+       **/
+      AssetStatusChanged: AugmentedEvent<ApiType, [ClassId]>;
+      /**
+       * Attribute metadata has been cleared for an asset class or instance.
+       * \[ class, maybe_instance, key, maybe_value \]
+       **/
+      AttributeCleared: AugmentedEvent<ApiType, [ClassId, Option<InstanceId>, Bytes]>;
+      /**
+       * New attribute metadata has been set for an asset class or instance.
+       * \[ class, maybe_instance, key, value \]
+       **/
+      AttributeSet: AugmentedEvent<ApiType, [ClassId, Option<InstanceId>, Bytes, Bytes]>;
+      /**
+       * An asset `instance` was destroyed. \[ class, instance, owner \]
+       **/
+      Burned: AugmentedEvent<ApiType, [ClassId, InstanceId, AccountId]>;
+      /**
+       * Some asset `class` was frozen. \[ class \]
+       **/
+      ClassFrozen: AugmentedEvent<ApiType, [ClassId]>;
+      /**
+       * Metadata has been cleared for an asset class. \[ class \]
+       **/
+      ClassMetadataCleared: AugmentedEvent<ApiType, [ClassId]>;
+      /**
+       * New metadata has been set for an asset class. \[ class, data, is_frozen \]
+       **/
+      ClassMetadataSet: AugmentedEvent<ApiType, [ClassId, Bytes, bool]>;
+      /**
+       * Some asset `class` was thawed. \[ class \]
+       **/
+      ClassThawed: AugmentedEvent<ApiType, [ClassId]>;
+      /**
+       * An asset class was created. \[ class, creator, owner \]
+       **/
+      Created: AugmentedEvent<ApiType, [ClassId, AccountId, AccountId]>;
+      /**
+       * An asset `class` was destroyed. \[ class \]
+       **/
+      Destroyed: AugmentedEvent<ApiType, [ClassId]>;
+      /**
+       * An asset class was force-created. \[ class, owner \]
+       **/
+      ForceCreated: AugmentedEvent<ApiType, [ClassId, AccountId]>;
+      /**
+       * Some asset `instance` was frozen. \[ class, instance \]
+       **/
+      Frozen: AugmentedEvent<ApiType, [ClassId, InstanceId]>;
+      /**
+       * An asset `instace` was issued. \[ class, instance, owner \]
+       **/
+      Issued: AugmentedEvent<ApiType, [ClassId, InstanceId, AccountId]>;
+      /**
+       * Metadata has been cleared for an asset instance. \[ class, instance \]
+       **/
+      MetadataCleared: AugmentedEvent<ApiType, [ClassId, InstanceId]>;
+      /**
+       * New metadata has been set for an asset instance.
+       * \[ class, instance, data, is_frozen \]
+       **/
+      MetadataSet: AugmentedEvent<ApiType, [ClassId, InstanceId, Bytes, bool]>;
+      /**
+       * The owner changed \[ class, new_owner \]
+       **/
+      OwnerChanged: AugmentedEvent<ApiType, [ClassId, AccountId]>;
+      /**
+       * Metadata has been cleared for an asset instance. \[ class, successful_instances \]
+       **/
+      Redeposited: AugmentedEvent<ApiType, [ClassId, Vec<InstanceId>]>;
+      /**
+       * The management team changed \[ class, issuer, admin, freezer \]
+       **/
+      TeamChanged: AugmentedEvent<ApiType, [ClassId, AccountId, AccountId, AccountId]>;
+      /**
+       * Some asset `instance` was thawed. \[ class, instance \]
+       **/
+      Thawed: AugmentedEvent<ApiType, [ClassId, InstanceId]>;
+      /**
+       * An asset `instace` was transferred. \[ class, instance, from, to \]
+       **/
+      Transferred: AugmentedEvent<ApiType, [ClassId, InstanceId, AccountId, AccountId]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    utility: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * Batch of dispatches completed fully with no error.
       **/
@@ -859,9 +1165,12 @@ declare module '@polkadot/api/types/events' {
       * well as the error. \[index, error\]
       **/
      BatchInterrupted: AugmentedEvent<ApiType, [u32, DispatchError]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
    vesting: {
-      [key: string]: AugmentedEvent<ApiType>;
      /**
       * An \[account\] has become fully vested. No further vesting can happen.
       **/
@@ -872,6 +1181,10 @@ declare module '@polkadot/api/types/events' {
       * \[account, unvested\]
       **/
      VestingUpdated: AugmentedEvent<ApiType, [AccountId, Balance]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
    };
  }

@@ -3,30 +3,32 @@

 import type { Bytes, Data, Option, U8aFixed, Vec, bool, u32, u64 } from '@polkadot/types';
 import type { AnyNumber, ITuple, Observable } from '@polkadot/types/types';
-import type { AssetBalance, AssetDetails, AssetMetadata } from '@polkadot/types/interfaces/assets';
+import type { AssetApproval, AssetBalance, AssetDetails, AssetMetadata } from '@polkadot/types/interfaces/assets';
 import type { UncleEntryItem } from '@polkadot/types/interfaces/authorship';
-import type { BabeAuthorityWeight, MaybeRandomness, NextConfigDescriptor, Randomness } from '@polkadot/types/interfaces/babe';
-import type { AccountData, BalanceLock } from '@polkadot/types/interfaces/balances';
+import type { BabeAuthorityWeight, BabeEpochConfiguration, MaybeRandomness, NextConfigDescriptor, Randomness } from '@polkadot/types/interfaces/babe';
+import type { AccountData, BalanceLock, ReserveData } from '@polkadot/types/interfaces/balances';
 import type { ProposalIndex, Votes } from '@polkadot/types/interfaces/collective';
 import type { AuthorityId } from '@polkadot/types/interfaces/consensus';
-import type { CodeHash, ContractInfo, DeletedContract, PrefabWasmModule, Schedule } from '@polkadot/types/interfaces/contracts';
+import type { CodeHash, ContractInfo, DeletedContract, PrefabWasmModule } from '@polkadot/types/interfaces/contracts';
 import type { PreimageStatus, PropIndex, Proposal, ReferendumIndex, ReferendumInfo, Voting } from '@polkadot/types/interfaces/democracy';
 import type { VoteThreshold } from '@polkadot/types/interfaces/elections';
+import type { ActiveGilt, ActiveGiltsTotal, ActiveIndex, GiltBid } from '@polkadot/types/interfaces/gilt';
 import type { SetId, StoredPendingChange, StoredState } from '@polkadot/types/interfaces/grandpa';
 import type { RegistrarInfo, Registration } from '@polkadot/types/interfaces/identity';
 import type { AuthIndex } from '@polkadot/types/interfaces/imOnline';
 import type { CallIndex, LotteryConfig } from '@polkadot/types/interfaces/lottery';
-import type { DeferredOffenceOf, Kind, OffenceDetails, OpaqueTimeSlot, ReportIdOf } from '@polkadot/types/interfaces/offences';
+import type { Kind, OffenceDetails, OpaqueTimeSlot, ReportIdOf } from '@polkadot/types/interfaces/offences';
 import type { ProxyAnnouncement, ProxyDefinition } from '@polkadot/types/interfaces/proxy';
 import type { ActiveRecovery, RecoveryConfig } from '@polkadot/types/interfaces/recovery';
-import type { AccountId, AccountIndex, AssetId, Balance, BalanceOf, BlockNumber, Hash, KeyTypeId, Moment, OpaqueCall, Perbill, Releases, ValidatorId } from '@polkadot/types/interfaces/runtime';
+import type { AccountId, AccountIndex, AssetId, Balance, BalanceOf, BlockNumber, Hash, KeyTypeId, Moment, OpaqueCall, Perbill, Releases, Slot, TransactionInfo, ValidatorId } from '@polkadot/types/interfaces/runtime';
 import type { Scheduled, TaskAddress } from '@polkadot/types/interfaces/scheduler';
 import type { Keys, SessionIndex } from '@polkadot/types/interfaces/session';
 import type { Bid, BidKind, SocietyVote, StrikeCount, VouchingStatus } from '@polkadot/types/interfaces/society';
-import type { ActiveEraInfo, ElectionResult, ElectionScore, ElectionStatus, EraIndex, EraRewardPoints, Exposure, Forcing, Nominations, RewardDestination, SeatHolder, SlashingSpans, SpanIndex, SpanRecord, StakingLedger, UnappliedSlash, ValidatorPrefs, Voter } from '@polkadot/types/interfaces/staking';
+import type { ActiveEraInfo, ElectionPhase, ElectionScore, EraIndex, EraRewardPoints, Exposure, Forcing, Nominations, ReadySolution, RewardDestination, RoundSnapshot, SeatHolder, SlashingSpans, SolutionOrSnapshotSize, SpanIndex, SpanRecord, StakingLedger, UnappliedSlash, ValidatorPrefs, Voter } from '@polkadot/types/interfaces/staking';
 import type { AccountInfo, ConsumedWeight, DigestOf, EventIndex, EventRecord, LastRuntimeUpgradeInfo, Phase } from '@polkadot/types/interfaces/system';
 import type { Bounty, BountyIndex, OpenTip, TreasuryProposal } from '@polkadot/types/interfaces/treasury';
 import type { Multiplier } from '@polkadot/types/interfaces/txpayment';
+import type { ClassDetails, ClassId, ClassMetadata, DepositBalanceOf, InstanceDetails, InstanceId, InstanceMetadata } from '@polkadot/types/interfaces/uniques';
 import type { Multisig } from '@polkadot/types/interfaces/utility';
 import type { VestingInfo } from '@polkadot/types/interfaces/vesting';
 import type { ApiTypes } from '@polkadot/api/types';
@@ -34,11 +36,16 @@ import type { ApiTypes } from '@polkadot/api/types';
 declare module '@polkadot/api/types/storage' {
  export interface AugmentedQueries<ApiType> {
    assets: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The number of units of assets held by any given account.
       **/
-      account: AugmentedQueryDoubleMap<ApiType, (key1: AssetId | AnyNumber | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<AssetBalance>, [AssetId, AccountId]> & QueryableStorageEntry<ApiType, [AssetId, AccountId]>;
+      account: AugmentedQuery<ApiType, (arg1: AssetId | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<AssetBalance>, [AssetId, AccountId]> & QueryableStorageEntry<ApiType, [AssetId, AccountId]>;
+      /**
+       * Approved balance transfers. First balance is the amount approved for transfer. Second
+       * is the amount of `T::Currency` reserved for storing this.
+       * First key is the asset ID, second key is the owner and third key is the delegate.
+       **/
+      approvals: AugmentedQuery<ApiType, (arg1: AssetId | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array, arg3: AccountId | string | Uint8Array) => Observable<Option<AssetApproval>>, [AssetId, AccountId, AccountId]> & QueryableStorageEntry<ApiType, [AssetId, AccountId, AccountId]>;
      /**
       * Details of an asset.
       **/
@@ -47,9 +54,12 @@ declare module '@polkadot/api/types/storage' {
       * Metadata of an asset.
       **/
      metadata: AugmentedQuery<ApiType, (arg: AssetId | AnyNumber | Uint8Array) => Observable<AssetMetadata>, [AssetId]> & QueryableStorageEntry<ApiType, [AssetId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    authorship: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Author of current block.
       **/
@@ -62,9 +72,12 @@ declare module '@polkadot/api/types/storage' {
       * Uncles
       **/
      uncles: AugmentedQuery<ApiType, () => Observable<Vec<UncleEntryItem>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    babe: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Current epoch authorities.
       **/
@@ -78,16 +91,28 @@ declare module '@polkadot/api/types/storage' {
      /**
       * Current slot number.
       **/
-      currentSlot: AugmentedQuery<ApiType, () => Observable<u64>, []> & QueryableStorageEntry<ApiType, []>;
+      currentSlot: AugmentedQuery<ApiType, () => Observable<Slot>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The configuration for the current epoch. Should never be `None` as it is initialized in genesis.
+       **/
+      epochConfig: AugmentedQuery<ApiType, () => Observable<Option<BabeEpochConfiguration>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Current epoch index.
       **/
      epochIndex: AugmentedQuery<ApiType, () => Observable<u64>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The block numbers when the last and current epoch have started, respectively `N-1` and
+       * `N`.
+       * NOTE: We track this is in order to annotate the block number when a given pool of
+       * entropy was fixed (i.e. it was known to chain observers). Since epochs are defined in
+       * slots, which may be skipped, the block numbers may not line up with the slot numbers.
+       **/
+      epochStart: AugmentedQuery<ApiType, () => Observable<ITuple<[BlockNumber, BlockNumber]>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * The slot at which the first epoch actually started. This is 0
       * until the first block of the chain.
       **/
-      genesisSlot: AugmentedQuery<ApiType, () => Observable<u64>, []> & QueryableStorageEntry<ApiType, []>;
+      genesisSlot: AugmentedQuery<ApiType, () => Observable<Slot>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Temporary value (cleared at block finalization) which is `Some`
       * if per-block initialization has already been called for current block.
@@ -106,13 +131,18 @@ declare module '@polkadot/api/types/storage' {
       **/
      nextAuthorities: AugmentedQuery<ApiType, () => Observable<Vec<ITuple<[AuthorityId, BabeAuthorityWeight]>>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
-       * Next epoch configuration, if changed.
+       * The configuration for the next epoch, `None` if the config will not change
+       * (you can fallback to `EpochConfig` instead in that case).
       **/
-      nextEpochConfig: AugmentedQuery<ApiType, () => Observable<Option<NextConfigDescriptor>>, []> & QueryableStorageEntry<ApiType, []>;
+      nextEpochConfig: AugmentedQuery<ApiType, () => Observable<Option<BabeEpochConfiguration>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Next epoch randomness.
       **/
      nextRandomness: AugmentedQuery<ApiType, () => Observable<Randomness>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Pending epoch configuration change that will be applied when the next epoch is enacted.
+       **/
+      pendingEpochConfigChange: AugmentedQuery<ApiType, () => Observable<Option<NextConfigDescriptor>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * The epoch randomness for the *current* epoch.
       * 
@@ -142,13 +172,16 @@ declare module '@polkadot/api/types/storage' {
       * TWOX-NOTE: `SegmentIndex` is an increasing integer, so this is okay.
       **/
      underConstruction: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<Vec<Randomness>>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    balances: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The balance of an account.
       * 
-       * NOTE: This is only used in the case that this module is used to store balances.
+       * NOTE: This is only used in the case that this pallet is used to store balances.
       **/
      account: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<AccountData>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
      /**
@@ -156,6 +189,10 @@ declare module '@polkadot/api/types/storage' {
       * NOTE: Should only be accessed when setting, changing and freeing a lock.
       **/
      locks: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Vec<BalanceLock>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Named reserves on some account balances.
+       **/
+      reserves: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Vec<ReserveData>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
      /**
       * Storage version of the pallet.
       * 
@@ -166,9 +203,12 @@ declare module '@polkadot/api/types/storage' {
       * The total units issued in the system.
       **/
      totalIssuance: AugmentedQuery<ApiType, () => Observable<Balance>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    bounties: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Bounties that have been made.
       **/
@@ -185,9 +225,12 @@ declare module '@polkadot/api/types/storage' {
       * The description of each bounty.
       **/
      bountyDescriptions: AugmentedQuery<ApiType, (arg: BountyIndex | AnyNumber | Uint8Array) => Observable<Option<Bytes>>, [BountyIndex]> & QueryableStorageEntry<ApiType, [BountyIndex]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    contracts: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The subtrie counter.
       **/
@@ -202,10 +245,6 @@ declare module '@polkadot/api/types/storage' {
       * TWOX-NOTE: SAFE since `AccountId` is a secure hash.
       **/
      contractInfoOf: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<ContractInfo>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
-      /**
-       * Current cost schedule for contracts.
-       **/
-      currentSchedule: AugmentedQuery<ApiType, () => Observable<Schedule>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Evicted contracts that await child trie deletion.
       * 
@@ -217,9 +256,12 @@ declare module '@polkadot/api/types/storage' {
       * A mapping from an original code hash to the original code, untouched by instrumentation.
       **/
      pristineCode: AugmentedQuery<ApiType, (arg: CodeHash | string | Uint8Array) => Observable<Option<Bytes>>, [CodeHash]> & QueryableStorageEntry<ApiType, [CodeHash]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    council: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The current members of the collective. This is stored sorted (just by value).
       **/
@@ -244,9 +286,12 @@ declare module '@polkadot/api/types/storage' {
       * Votes on a given proposal, if it is ongoing.
       **/
      voting: AugmentedQuery<ApiType, (arg: Hash | string | Uint8Array) => Observable<Option<Votes>>, [Hash]> & QueryableStorageEntry<ApiType, [Hash]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    democracy: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * A record of who vetoed what. Maps proposal hash to a possible existent block number
       * (until when it may not be resubmitted) and who vetoed it.
@@ -322,9 +367,60 @@ declare module '@polkadot/api/types/storage' {
       * TWOX-NOTE: SAFE as `AccountId`s are crypto hashes anyway.
       **/
      votingOf: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Voting>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
+    };
+    electionProviderMultiPhase: {
+      /**
+       * Current phase.
+       **/
+      currentPhase: AugmentedQuery<ApiType, () => Observable<ElectionPhase>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Desired number of targets to elect for this round.
+       * 
+       * Only exists when [`Snapshot`] is present.
+       **/
+      desiredTargets: AugmentedQuery<ApiType, () => Observable<Option<u32>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The minimum score that each 'untrusted' solution must attain in order to be considered
+       * feasible.
+       * 
+       * Can be set via `set_minimum_untrusted_score`.
+       **/
+      minimumUntrustedScore: AugmentedQuery<ApiType, () => Observable<Option<ElectionScore>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Current best solution, signed or unsigned, queued to be returned upon `elect`.
+       **/
+      queuedSolution: AugmentedQuery<ApiType, () => Observable<Option<ReadySolution>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Internal counter for the number of rounds.
+       * 
+       * This is useful for de-duplication of transactions submitted to the pool, and general
+       * diagnostics of the pallet.
+       * 
+       * This is merely incremented once per every time that an upstream `elect` is called.
+       **/
+      round: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Snapshot data of the round.
+       * 
+       * This is created at the beginning of the signed phase and cleared upon calling `elect`.
+       **/
+      snapshot: AugmentedQuery<ApiType, () => Observable<Option<RoundSnapshot>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The metadata of the [`RoundSnapshot`]
+       * 
+       * Only exists when [`Snapshot`] is present.
+       **/
+      snapshotMetadata: AugmentedQuery<ApiType, () => Observable<Option<SolutionOrSnapshotSize>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    elections: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The present candidate list. A current member or runner-up can never enter this vector
       * and is always implicitly assumed to be a candidate.
@@ -357,9 +453,38 @@ declare module '@polkadot/api/types/storage' {
       * TWOX-NOTE: SAFE as `AccountId` is a crypto hash.
       **/
      voting: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Voter>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
+    };
+    gilt: {
+      /**
+       * The currently active gilts, indexed according to the order of creation.
+       **/
+      active: AugmentedQuery<ApiType, (arg: ActiveIndex | AnyNumber | Uint8Array) => Observable<Option<ActiveGilt>>, [ActiveIndex]> & QueryableStorageEntry<ApiType, [ActiveIndex]>;
+      /**
+       * Information relating to the gilts currently active.
+       **/
+      activeTotal: AugmentedQuery<ApiType, () => Observable<ActiveGiltsTotal>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The queues of bids ready to become gilts. Indexed by duration (in `Period`s).
+       **/
+      queues: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<Vec<GiltBid>>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
+      /**
+       * The totals of items and balances within each queue. Saves a lot of storage reads in the
+       * case of sparsely packed queues.
+       * 
+       * The vector is indexed by duration in `Period`s, offset by one, so information on the queue
+       * whose duration is one `Period` would be storage `0`.
+       **/
+      queueTotals: AugmentedQuery<ApiType, () => Observable<Vec<ITuple<[u32, BalanceOf]>>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    grandpa: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The number of changes (both in terms of keys and underlying economic responsibilities)
       * in the "set" of Grandpa validators from genesis.
@@ -388,9 +513,12 @@ declare module '@polkadot/api/types/storage' {
       * State of the current authority set.
       **/
      state: AugmentedQuery<ApiType, () => Observable<StoredState>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    identity: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Information that is pertinent to identify the entity behind an account.
       * 
@@ -417,21 +545,29 @@ declare module '@polkadot/api/types/storage' {
       * context. If the account is not some other account's sub-identity, then just `None`.
       **/
      superOf: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<ITuple<[AccountId, Data]>>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    imOnline: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
-       * For each session index, we keep a mapping of `T::ValidatorId` to the
+       * For each session index, we keep a mapping of `ValidatorId<T>` to the
       * number of blocks authored by the given authority.
       **/
-      authoredBlocks: AugmentedQueryDoubleMap<ApiType, (key1: SessionIndex | AnyNumber | Uint8Array, key2: ValidatorId | string | Uint8Array) => Observable<u32>, [SessionIndex, ValidatorId]> & QueryableStorageEntry<ApiType, [SessionIndex, ValidatorId]>;
+      authoredBlocks: AugmentedQuery<ApiType, (arg1: SessionIndex | AnyNumber | Uint8Array, arg2: ValidatorId | string | Uint8Array) => Observable<u32>, [SessionIndex, ValidatorId]> & QueryableStorageEntry<ApiType, [SessionIndex, ValidatorId]>;
      /**
-       * The block number after which it's ok to send heartbeats in current session.
+       * The block number after which it's ok to send heartbeats in the current
+       * session.
       * 
-       * At the beginning of each session we set this to a value that should
-       * fall roughly in the middle of the session duration.
-       * The idea is to first wait for the validators to produce a block
-       * in the current session, so that the heartbeat later on will not be necessary.
+       * At the beginning of each session we set this to a value that should fall
+       * roughly in the middle of the session duration. The idea is to first wait for
+       * the validators to produce a block in the current session, so that the
+       * heartbeat later on will not be necessary.
+       * 
+       * This value will only be used as a fallback if we fail to get a proper session
+       * progress estimate from `NextSessionRotation`, as those estimates should be
+       * more accurate then the value we calculate for `HeartbeatAfter`.
       **/
      heartbeatAfter: AugmentedQuery<ApiType, () => Observable<BlockNumber>, []> & QueryableStorageEntry<ApiType, []>;
      /**
@@ -442,17 +578,23 @@ declare module '@polkadot/api/types/storage' {
       * For each session index, we keep a mapping of `AuthIndex` to
       * `offchain::OpaqueNetworkState`.
       **/
-      receivedHeartbeats: AugmentedQueryDoubleMap<ApiType, (key1: SessionIndex | AnyNumber | Uint8Array, key2: AuthIndex | AnyNumber | Uint8Array) => Observable<Option<Bytes>>, [SessionIndex, AuthIndex]> & QueryableStorageEntry<ApiType, [SessionIndex, AuthIndex]>;
+      receivedHeartbeats: AugmentedQuery<ApiType, (arg1: SessionIndex | AnyNumber | Uint8Array, arg2: AuthIndex | AnyNumber | Uint8Array) => Observable<Option<Bytes>>, [SessionIndex, AuthIndex]> & QueryableStorageEntry<ApiType, [SessionIndex, AuthIndex]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    indices: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The lookup from index to account.
       **/
      accounts: AugmentedQuery<ApiType, (arg: AccountIndex | AnyNumber | Uint8Array) => Observable<Option<ITuple<[AccountId, BalanceOf, bool]>>>, [AccountIndex]> & QueryableStorageEntry<ApiType, [AccountIndex]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    lottery: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The calls stored in this pallet to be used in an active lottery if configured
       * by `Config::ValidateCall`.
@@ -478,9 +620,12 @@ declare module '@polkadot/api/types/storage' {
       * Total number of tickets sold.
       **/
      ticketsCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    mmr: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Hashes of the nodes in the MMR.
       * 
@@ -496,26 +641,27 @@ declare module '@polkadot/api/types/storage' {
       * Latest MMR Root hash.
       **/
      rootHash: AugmentedQuery<ApiType, () => Observable<Hash>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    multisig: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      calls: AugmentedQuery<ApiType, (arg: U8aFixed | string | Uint8Array) => Observable<Option<ITuple<[OpaqueCall, AccountId, BalanceOf]>>>, [U8aFixed]> & QueryableStorageEntry<ApiType, [U8aFixed]>;
      /**
       * The set of open multisig operations.
       **/
-      multisigs: AugmentedQueryDoubleMap<ApiType, (key1: AccountId | string | Uint8Array, key2: U8aFixed | string | Uint8Array) => Observable<Option<Multisig>>, [AccountId, U8aFixed]> & QueryableStorageEntry<ApiType, [AccountId, U8aFixed]>;
+      multisigs: AugmentedQuery<ApiType, (arg1: AccountId | string | Uint8Array, arg2: U8aFixed | string | Uint8Array) => Observable<Option<Multisig>>, [AccountId, U8aFixed]> & QueryableStorageEntry<ApiType, [AccountId, U8aFixed]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    offences: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * A vector of reports of the same kind that happened at the same time slot.
       **/
-      concurrentReportsIndex: AugmentedQueryDoubleMap<ApiType, (key1: Kind | string | Uint8Array, key2: OpaqueTimeSlot | string | Uint8Array) => Observable<Vec<ReportIdOf>>, [Kind, OpaqueTimeSlot]> & QueryableStorageEntry<ApiType, [Kind, OpaqueTimeSlot]>;
-      /**
-       * Deferred reports that have been rejected by the offence handler and need to be submitted
-       * at a later time.
-       **/
-      deferredOffences: AugmentedQuery<ApiType, () => Observable<Vec<DeferredOffenceOf>>, []> & QueryableStorageEntry<ApiType, []>;
+      concurrentReportsIndex: AugmentedQuery<ApiType, (arg1: Kind | string | Uint8Array, arg2: OpaqueTimeSlot | string | Uint8Array) => Observable<Vec<ReportIdOf>>, [Kind, OpaqueTimeSlot]> & QueryableStorageEntry<ApiType, [Kind, OpaqueTimeSlot]>;
      /**
       * The primary structure that holds all offence records keyed by report identifiers.
       **/
@@ -529,9 +675,12 @@ declare module '@polkadot/api/types/storage' {
       * different types are not supported at the moment so we are doing the manual serialization.
       **/
      reportsByKindIndex: AugmentedQuery<ApiType, (arg: Kind | string | Uint8Array) => Observable<Bytes>, [Kind]> & QueryableStorageEntry<ApiType, [Kind]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    proxy: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The announcements made by the proxy (key).
       **/
@@ -541,25 +690,31 @@ declare module '@polkadot/api/types/storage' {
       * which are being delegated to, together with the amount held on deposit.
       **/
      proxies: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<ITuple<[Vec<ProxyDefinition>, BalanceOf]>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    randomnessCollectiveFlip: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Series of block headers from the last 81 blocks that acts as random seed material. This
       * is arranged as a ring buffer with `block_number % 81` being the index into the `Vec` of
       * the oldest hash.
       **/
      randomMaterial: AugmentedQuery<ApiType, () => Observable<Vec<Hash>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    recovery: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Active recovery attempts.
       * 
       * First account is the account to be recovered, and the second account
       * is the user trying to recover the account.
       **/
-      activeRecoveries: AugmentedQueryDoubleMap<ApiType, (key1: AccountId | string | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<Option<ActiveRecovery>>, [AccountId, AccountId]> & QueryableStorageEntry<ApiType, [AccountId, AccountId]>;
+      activeRecoveries: AugmentedQuery<ApiType, (arg1: AccountId | string | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<Option<ActiveRecovery>>, [AccountId, AccountId]> & QueryableStorageEntry<ApiType, [AccountId, AccountId]>;
      /**
       * The list of allowed proxy accounts.
       * 
@@ -570,9 +725,12 @@ declare module '@polkadot/api/types/storage' {
       * The set of recoverable accounts and their recovery configuration.
       **/
      recoverable: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<RecoveryConfig>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    scheduler: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Items to be executed, indexed by the block number that they should be executed on.
       **/
@@ -587,9 +745,12 @@ declare module '@polkadot/api/types/storage' {
       * New networks start with last version.
       **/
      storageVersion: AugmentedQuery<ApiType, () => Observable<Releases>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    session: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Current index of the session.
       **/
@@ -622,9 +783,12 @@ declare module '@polkadot/api/types/storage' {
       * The current set of validators.
       **/
      validators: AugmentedQuery<ApiType, () => Observable<Vec<ValidatorId>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    society: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The current bids, stored ordered by the value of the bid.
       **/
@@ -685,14 +849,17 @@ declare module '@polkadot/api/types/storage' {
      /**
       * Double map from Candidate -> Voter -> (Maybe) Vote.
       **/
-      votes: AugmentedQueryDoubleMap<ApiType, (key1: AccountId | string | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<Option<SocietyVote>>, [AccountId, AccountId]> & QueryableStorageEntry<ApiType, [AccountId, AccountId]>;
+      votes: AugmentedQuery<ApiType, (arg1: AccountId | string | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<Option<SocietyVote>>, [AccountId, AccountId]> & QueryableStorageEntry<ApiType, [AccountId, AccountId]>;
      /**
       * Members currently vouching or banned from vouching again
       **/
      vouching: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<VouchingStatus>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    staking: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The active era information, it holds index and start.
       * 
@@ -716,6 +883,14 @@ declare module '@polkadot/api/types/storage' {
       * canceled by extraordinary circumstances (e.g. governance).
       **/
      canceledSlashPayout: AugmentedQuery<ApiType, () => Observable<BalanceOf>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * A tracker to keep count of the number of items in the `Nominators` map.
+       **/
+      counterForNominators: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * A tracker to keep count of the number of items in the `Validators` map.
+       **/
+      counterForValidators: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * The current era index.
       * 
@@ -723,15 +898,16 @@ declare module '@polkadot/api/types/storage' {
       * set, it might be active or not.
       **/
      currentEra: AugmentedQuery<ApiType, () => Observable<Option<EraIndex>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The last planned session scheduled by the session pallet.
+       * 
+       * This is basically in sync with the call to [`SessionManager::new_session`].
+       **/
+      currentPlannedSession: AugmentedQuery<ApiType, () => Observable<SessionIndex>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * The earliest era for which we have a pending, unapplied slash.
       **/
      earliestUnappliedSlash: AugmentedQuery<ApiType, () => Observable<Option<EraIndex>>, []> & QueryableStorageEntry<ApiType, []>;
-      /**
-       * Flag to control the execution of the offchain election. When `Open(_)`, we accept
-       * solutions to be submitted.
-       **/
-      eraElectionStatus: AugmentedQuery<ApiType, () => Observable<ElectionStatus>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Rewards for the last `HISTORY_DEPTH` eras.
       * If reward hasn't been set or has been removed then 0 reward is returned.
@@ -745,7 +921,7 @@ declare module '@polkadot/api/types/storage' {
       * Is it removed after `HISTORY_DEPTH` eras.
       * If stakers hasn't been set or has been removed then empty exposure is returned.
       **/
-      erasStakers: AugmentedQueryDoubleMap<ApiType, (key1: EraIndex | AnyNumber | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<Exposure>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
+      erasStakers: AugmentedQuery<ApiType, (arg1: EraIndex | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<Exposure>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
      /**
       * Clipped Exposure of validator at era.
       * 
@@ -759,7 +935,7 @@ declare module '@polkadot/api/types/storage' {
       * Is it removed after `HISTORY_DEPTH` eras.
       * If stakers hasn't been set or has been removed then empty exposure is returned.
       **/
-      erasStakersClipped: AugmentedQueryDoubleMap<ApiType, (key1: EraIndex | AnyNumber | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<Exposure>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
+      erasStakersClipped: AugmentedQuery<ApiType, (arg1: EraIndex | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<Exposure>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
      /**
       * The session index at which the era start for the last `HISTORY_DEPTH` eras.
       * 
@@ -779,7 +955,7 @@ declare module '@polkadot/api/types/storage' {
       * 
       * Is it removed after `HISTORY_DEPTH` eras.
       **/
-      erasValidatorPrefs: AugmentedQueryDoubleMap<ApiType, (key1: EraIndex | AnyNumber | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<ValidatorPrefs>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
+      erasValidatorPrefs: AugmentedQuery<ApiType, (arg1: EraIndex | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<ValidatorPrefs>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
      /**
       * The total validator era payout for the last `HISTORY_DEPTH` eras.
       * 
@@ -806,41 +982,48 @@ declare module '@polkadot/api/types/storage' {
       * invulnerables) and restricted to testnets.
       **/
      invulnerables: AugmentedQuery<ApiType, () => Observable<Vec<AccountId>>, []> & QueryableStorageEntry<ApiType, []>;
-      /**
-       * True if the current **planned** session is final. Note that this does not take era
-       * forcing into account.
-       **/
-      isCurrentSessionFinal: AugmentedQuery<ApiType, () => Observable<bool>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Map from all (unlocked) "controller" accounts to the info regarding the staking.
       **/
      ledger: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<StakingLedger>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * The maximum nominator count before we stop allowing new validators to join.
+       * 
+       * When this value is not set, no limits are enforced.
+       **/
+      maxNominatorsCount: AugmentedQuery<ApiType, () => Observable<Option<u32>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The maximum validator count before we stop allowing new validators to join.
+       * 
+       * When this value is not set, no limits are enforced.
+       **/
+      maxValidatorsCount: AugmentedQuery<ApiType, () => Observable<Option<u32>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Minimum number of staking participants before emergency conditions are imposed.
       **/
      minimumValidatorCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The minimum active bond to become and maintain the role of a nominator.
+       **/
+      minNominatorBond: AugmentedQuery<ApiType, () => Observable<BalanceOf>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The minimum active bond to become and maintain the role of a validator.
+       **/
+      minValidatorBond: AugmentedQuery<ApiType, () => Observable<BalanceOf>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * The map from nominator stash key to the set of stash keys of all validators to nominate.
+       * 
+       * When updating this storage item, you must also update the `CounterForNominators`.
       **/
      nominators: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<Nominations>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
      /**
       * All slashing events on nominators, mapped by era to the highest slash value of the era.
       **/
-      nominatorSlashInEra: AugmentedQueryDoubleMap<ApiType, (key1: EraIndex | AnyNumber | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<Option<BalanceOf>>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
+      nominatorSlashInEra: AugmentedQuery<ApiType, (arg1: EraIndex | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<Option<BalanceOf>>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
      /**
       * Where the reward payment should be made. Keyed by stash.
       **/
      payee: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<RewardDestination>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
-      /**
-       * The next validator set. At the end of an era, if this is available (potentially from the
-       * result of an offchain worker), it is immediately used. Otherwise, the on-chain election
-       * is executed.
-       **/
-      queuedElected: AugmentedQuery<ApiType, () => Observable<Option<ElectionResult>>, []> & QueryableStorageEntry<ApiType, []>;
-      /**
-       * The score of the current [`QueuedElected`].
-       **/
-      queuedScore: AugmentedQuery<ApiType, () => Observable<Option<ElectionScore>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Slashing spans for stash accounts.
       **/
@@ -851,16 +1034,6 @@ declare module '@polkadot/api/types/storage' {
       * The rest of the slashed value is handled by the `Slash`.
       **/
      slashRewardFraction: AugmentedQuery<ApiType, () => Observable<Perbill>, []> & QueryableStorageEntry<ApiType, []>;
-      /**
-       * Snapshot of nominators at the beginning of the current election window. This should only
-       * have a value when [`EraElectionStatus`] == `ElectionStatus::Open(_)`.
-       **/
-      snapshotNominators: AugmentedQuery<ApiType, () => Observable<Option<Vec<AccountId>>>, []> & QueryableStorageEntry<ApiType, []>;
-      /**
-       * Snapshot of validators at the beginning of the current election window. This should only
-       * have a value when [`EraElectionStatus`] == `ElectionStatus::Open(_)`.
-       **/
-      snapshotValidators: AugmentedQuery<ApiType, () => Observable<Option<Vec<AccountId>>>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * Records information about the maximum slash of a stash within a slashing span,
       * as well as how much reward has been paid out.
@@ -870,7 +1043,7 @@ declare module '@polkadot/api/types/storage' {
       * True if network has been upgraded to this version.
       * Storage version of the pallet.
       * 
-       * This is set to v5.0.0 for new networks.
+       * This is set to v6.0.0 for new networks.
       **/
      storageVersion: AugmentedQuery<ApiType, () => Observable<Releases>, []> & QueryableStorageEntry<ApiType, []>;
      /**
@@ -883,23 +1056,31 @@ declare module '@polkadot/api/types/storage' {
      validatorCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * The map from (wannabe) validator stash key to the preferences of that validator.
+       * 
+       * When updating this storage item, you must also update the `CounterForValidators`.
       **/
      validators: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<ValidatorPrefs>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
      /**
       * All slashing events on validators, mapped by era to the highest slash proportion
       * and slash value of the era.
       **/
-      validatorSlashInEra: AugmentedQueryDoubleMap<ApiType, (key1: EraIndex | AnyNumber | Uint8Array, key2: AccountId | string | Uint8Array) => Observable<Option<ITuple<[Perbill, BalanceOf]>>>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
+      validatorSlashInEra: AugmentedQuery<ApiType, (arg1: EraIndex | AnyNumber | Uint8Array, arg2: AccountId | string | Uint8Array) => Observable<Option<ITuple<[Perbill, BalanceOf]>>>, [EraIndex, AccountId]> & QueryableStorageEntry<ApiType, [EraIndex, AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    sudo: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The `AccountId` of the sudo key.
       **/
      key: AugmentedQuery<ApiType, () => Observable<AccountId>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    system: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The full account information for a particular account ID.
       **/
@@ -966,17 +1147,20 @@ declare module '@polkadot/api/types/storage' {
       **/
      parentHash: AugmentedQuery<ApiType, () => Observable<Hash>, []> & QueryableStorageEntry<ApiType, []>;
      /**
-       * True if we have upgraded so that AccountInfo contains two types of `RefCount`. False
+       * True if we have upgraded so that AccountInfo contains three types of `RefCount`. False
       * (default) if not.
       **/
-      upgradedToDualRefCount: AugmentedQuery<ApiType, () => Observable<bool>, []> & QueryableStorageEntry<ApiType, []>;
+      upgradedToTripleRefCount: AugmentedQuery<ApiType, () => Observable<bool>, []> & QueryableStorageEntry<ApiType, []>;
      /**
       * True if we have upgraded so that `type RefCount` is `u32`. False (default) if not.
       **/
      upgradedToU32RefCount: AugmentedQuery<ApiType, () => Observable<bool>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    technicalCommittee: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The current members of the collective. This is stored sorted (just by value).
       **/
@@ -1001,9 +1185,12 @@ declare module '@polkadot/api/types/storage' {
       * Votes on a given proposal, if it is ongoing.
       **/
      voting: AugmentedQuery<ApiType, (arg: Hash | string | Uint8Array) => Observable<Option<Votes>>, [Hash]> & QueryableStorageEntry<ApiType, [Hash]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    technicalMembership: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * The current membership, stored as an ordered Vec.
       **/
@@ -1012,9 +1199,12 @@ declare module '@polkadot/api/types/storage' {
       * The current prime member, if one exists.
       **/
      prime: AugmentedQuery<ApiType, () => Observable<Option<AccountId>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    timestamp: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Did the timestamp get updated in this block?
       **/
@@ -1023,9 +1213,12 @@ declare module '@polkadot/api/types/storage' {
       * Current time for the current block.
       **/
      now: AugmentedQuery<ApiType, () => Observable<Moment>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    tips: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Simple preimage lookup from the reason's hash to the original data. Again, has an
       * insecure enumerable hash since the key is guaranteed to be the result of a secure hash.
@@ -1037,14 +1230,60 @@ declare module '@polkadot/api/types/storage' {
       * guaranteed to be a secure hash.
       **/
      tips: AugmentedQuery<ApiType, (arg: Hash | string | Uint8Array) => Observable<Option<OpenTip>>, [Hash]> & QueryableStorageEntry<ApiType, [Hash]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    transactionPayment: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      nextFeeMultiplier: AugmentedQuery<ApiType, () => Observable<Multiplier>, []> & QueryableStorageEntry<ApiType, []>;
      storageVersion: AugmentedQuery<ApiType, () => Observable<Releases>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
+    };
+    transactionStorage: {
+      blockTransactions: AugmentedQuery<ApiType, () => Observable<Vec<TransactionInfo>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Storage fee per byte.
+       **/
+      byteFee: AugmentedQuery<ApiType, () => Observable<Option<BalanceOf>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Count indexed chunks for each block.
+       **/
+      chunkCount: AugmentedQuery<ApiType, (arg: BlockNumber | AnyNumber | Uint8Array) => Observable<u32>, [BlockNumber]> & QueryableStorageEntry<ApiType, [BlockNumber]>;
+      /**
+       * Storage fee per transaction.
+       **/
+      entryFee: AugmentedQuery<ApiType, () => Observable<Option<BalanceOf>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Maximum number of indexed transactions in the block.
+       **/
+      maxBlockTransactions: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Maximum data set in a single transaction in bytes.
+       **/
+      maxTransactionSize: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Was the proof checked in this block?
+       **/
+      proofChecked: AugmentedQuery<ApiType, () => Observable<bool>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Storage period for data in blocks. Should match `sp_storage_proof::DEFAULT_STORAGE_PERIOD`
+       * for block authoring.
+       **/
+      storagePeriod: AugmentedQuery<ApiType, () => Observable<BlockNumber>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Collection of transaction metadata by block number.
+       **/
+      transactions: AugmentedQuery<ApiType, (arg: BlockNumber | AnyNumber | Uint8Array) => Observable<Option<Vec<TransactionInfo>>>, [BlockNumber]> & QueryableStorageEntry<ApiType, [BlockNumber]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    treasury: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Proposal indices that have been approved but not yet awarded.
       **/
@@ -1057,13 +1296,51 @@ declare module '@polkadot/api/types/storage' {
       * Proposals that have been made.
       **/
      proposals: AugmentedQuery<ApiType, (arg: ProposalIndex | AnyNumber | Uint8Array) => Observable<Option<TreasuryProposal>>, [ProposalIndex]> & QueryableStorageEntry<ApiType, [ProposalIndex]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
+    };
+    uniques: {
+      /**
+       * The assets held by any given account; set out this way so that assets owned by a single
+       * account can be enumerated.
+       **/
+      account: AugmentedQuery<ApiType, (arg1: AccountId | string | Uint8Array, arg2: ClassId | AnyNumber | Uint8Array, arg3: InstanceId | AnyNumber | Uint8Array) => Observable<Option<ITuple<[]>>>, [AccountId, ClassId, InstanceId]> & QueryableStorageEntry<ApiType, [AccountId, ClassId, InstanceId]>;
+      /**
+       * The assets in existence and their ownership details.
+       **/
+      asset: AugmentedQuery<ApiType, (arg1: ClassId | AnyNumber | Uint8Array, arg2: InstanceId | AnyNumber | Uint8Array) => Observable<Option<InstanceDetails>>, [ClassId, InstanceId]> & QueryableStorageEntry<ApiType, [ClassId, InstanceId]>;
+      /**
+       * Metadata of an asset class.
+       **/
+      attribute: AugmentedQuery<ApiType, (arg1: ClassId | AnyNumber | Uint8Array, arg2: Option<InstanceId> | null | object | string | Uint8Array, arg3: Bytes | string | Uint8Array) => Observable<Option<ITuple<[Bytes, DepositBalanceOf]>>>, [ClassId, Option<InstanceId>, Bytes]> & QueryableStorageEntry<ApiType, [ClassId, Option<InstanceId>, Bytes]>;
+      /**
+       * Details of an asset class.
+       **/
+      class: AugmentedQuery<ApiType, (arg: ClassId | AnyNumber | Uint8Array) => Observable<Option<ClassDetails>>, [ClassId]> & QueryableStorageEntry<ApiType, [ClassId]>;
+      /**
+       * Metadata of an asset class.
+       **/
+      classMetadataOf: AugmentedQuery<ApiType, (arg: ClassId | AnyNumber | Uint8Array) => Observable<Option<ClassMetadata>>, [ClassId]> & QueryableStorageEntry<ApiType, [ClassId]>;
+      /**
+       * Metadata of an asset instance.
+       **/
+      instanceMetadataOf: AugmentedQuery<ApiType, (arg1: ClassId | AnyNumber | Uint8Array, arg2: InstanceId | AnyNumber | Uint8Array) => Observable<Option<InstanceMetadata>>, [ClassId, InstanceId]> & QueryableStorageEntry<ApiType, [ClassId, InstanceId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
    vesting: {
-      [key: string]: QueryableStorageEntry<ApiType>;
      /**
       * Information regarding the vesting of a given account.
       **/
      vesting: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<VestingInfo>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * Generic query
+       **/
+      [key: string]: QueryableStorageEntry<ApiType>;
    };
  }

@@ -6,19 +6,21 @@ import type { Bytes, HashMap, Json, Null, Option, StorageKey, Text, U256, U64, V
 import type { AnyNumber, Codec, IExtrinsic, Observable } from '@polkadot/types/types';
 import type { ExtrinsicOrHash, ExtrinsicStatus } from '@polkadot/types/interfaces/author';
 import type { EpochAuthorship } from '@polkadot/types/interfaces/babe';
+import type { BeefySignedCommitment } from '@polkadot/types/interfaces/beefy';
 import type { BlockHash } from '@polkadot/types/interfaces/chain';
 import type { PrefixedStorageKey } from '@polkadot/types/interfaces/childstate';
 import type { AuthorityId } from '@polkadot/types/interfaces/consensus';
-import type { ContractCallRequest, ContractExecResult } from '@polkadot/types/interfaces/contracts';
+import type { ContractCallRequest, ContractExecResult, ContractInstantiateResult, InstantiateRequest } from '@polkadot/types/interfaces/contracts';
 import type { CreatedBlock } from '@polkadot/types/interfaces/engine';
-import type { EthAccount, EthCallRequest, EthFilter, EthLog, EthReceipt, EthRichBlock, EthSubKind, EthSubParams, EthSyncStatus, EthTransaction, EthTransactionRequest, EthWork } from '@polkadot/types/interfaces/eth';
+import type { EthAccount, EthCallRequest, EthFilter, EthFilterChanges, EthLog, EthReceipt, EthRichBlock, EthSubKind, EthSubParams, EthSyncStatus, EthTransaction, EthTransactionRequest, EthWork } from '@polkadot/types/interfaces/eth';
 import type { Extrinsic } from '@polkadot/types/interfaces/extrinsics';
 import type { EncodedFinalityProofs, JustificationNotification, ReportedRoundStates } from '@polkadot/types/interfaces/grandpa';
+import type { MmrLeafProof } from '@polkadot/types/interfaces/mmr';
 import type { StorageKind } from '@polkadot/types/interfaces/offchain';
 import type { FeeDetails, RuntimeDispatchInfo } from '@polkadot/types/interfaces/payment';
 import type { RpcMethods } from '@polkadot/types/interfaces/rpc';
 import type { AccountId, BlockNumber, H160, H256, H64, Hash, Header, Index, Justification, KeyValue, SignedBlock, StorageData } from '@polkadot/types/interfaces/runtime';
-import type { ReadProof, RuntimeVersion } from '@polkadot/types/interfaces/state';
+import type { ReadProof, RuntimeVersion, TraceBlockResponse } from '@polkadot/types/interfaces/state';
 import type { ApplyExtrinsicResult, ChainProperties, ChainType, Health, NetworkState, NodeRole, PeerInfo, SyncState } from '@polkadot/types/interfaces/system';

 declare module '@polkadot/rpc-core/types.jsonrpc' {
@@ -63,6 +65,12 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       **/
      epochAuthorship: AugmentedRpc<() => Observable<HashMap<AuthorityId, EpochAuthorship>>>;
    };
+    beefy: {
+      /**
+       * Returns the block most recently finalized by BEEFY, alongside side its justification.
+       **/
+      subscribeJustifications: AugmentedRpc<() => Observable<BeefySignedCommitment>>;
+    };
    chain: {
      /**
       * Get header and body of a relay chain block
@@ -98,6 +106,10 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Returns the keys with prefix from a child storage, leave empty to get all the keys
       **/
      getKeys: AugmentedRpc<(childKey: PrefixedStorageKey | string | Uint8Array, prefix: StorageKey | string | Uint8Array | any, at?: Hash | string | Uint8Array) => Observable<Vec<StorageKey>>>;
+      /**
+       * Returns the keys with prefix from a child storage with pagination support
+       **/
+      getKeysPaged: AugmentedRpc<(childKey: PrefixedStorageKey | string | Uint8Array, prefix: StorageKey | string | Uint8Array | any, count: u32 | AnyNumber | Uint8Array, startKey?: StorageKey | string | Uint8Array | any, at?: Hash | string | Uint8Array) => Observable<Vec<StorageKey>>>;
      /**
       * Returns a child storage entry at a specific block state
       **/
@@ -120,6 +132,10 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Returns the value under a specified storage key in a contract
       **/
      getStorage: AugmentedRpc<(address: AccountId | string | Uint8Array, key: H256 | string | Uint8Array, at?: BlockHash | string | Uint8Array) => Observable<Option<Bytes>>>;
+      /**
+       * Instantiate a new contract
+       **/
+      instantiate: AugmentedRpc<(request: InstantiateRequest | { origin?: any; endowment?: any; gasLimit?: any; code?: any; data?: any; salt?: any } | string | Uint8Array, at?: BlockHash | string | Uint8Array) => Observable<ContractInstantiateResult>>;
      /**
       * Returns the projected time a given contract will be able to sustain paying its rent
       **/
@@ -133,7 +149,7 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
      /**
       * Instructs the manual-seal authorship task to finalize a block
       **/
-      finalizeBlock: AugmentedRpc<(hash: BlockHash | string | Uint8Array, justification?: Justification | string | Uint8Array) => Observable<bool>>;
+      finalizeBlock: AugmentedRpc<(hash: BlockHash | string | Uint8Array, justification?: Justification) => Observable<bool>>;
    };
    eth: {
      /**
@@ -141,7 +157,7 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       **/
      accounts: AugmentedRpc<() => Observable<Vec<H160>>>;
      /**
-       * Returns balance of the given account.
+       * Returns the blockNumber
       **/
      blockNumber: AugmentedRpc<() => Observable<U256>>;
      /**
@@ -188,6 +204,14 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Returns the code at given address at given time (block number).
       **/
      getCode: AugmentedRpc<(address: H160 | string | Uint8Array, number?: BlockNumber | AnyNumber | Uint8Array) => Observable<Bytes>>;
+      /**
+       * Returns filter changes since last poll.
+       **/
+      getFilterChanges: AugmentedRpc<(index: U256 | AnyNumber | Uint8Array) => Observable<EthFilterChanges>>;
+      /**
+       * Returns all logs matching given filter (in a range 'from' - 'to').
+       **/
+      getFilterLogs: AugmentedRpc<(index: U256 | AnyNumber | Uint8Array) => Observable<Vec<EthLog>>>;
      /**
       * Returns logs matching given filter object.
       **/
@@ -248,6 +272,18 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Returns true if client is actively mining new blocks.
       **/
      mining: AugmentedRpc<() => Observable<bool>>;
+      /**
+       * Returns id of new block filter.
+       **/
+      newBlockFilter: AugmentedRpc<() => Observable<U256>>;
+      /**
+       * Returns id of new filter.
+       **/
+      newFilter: AugmentedRpc<(filter: EthFilter | { fromBlock?: any; toBlock?: any; blockHash?: any; address?: any; topics?: any } | string | Uint8Array) => Observable<U256>>;
+      /**
+       * Returns id of new block filter.
+       **/
+      newPendingTransactionFilter: AugmentedRpc<() => Observable<U256>>;
      /**
       * Returns protocol version encoded as a string (quotes are necessary).
       **/
@@ -276,6 +312,10 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Returns an object with data about the sync status or false.
       **/
      syncing: AugmentedRpc<() => Observable<EthSyncStatus>>;
+      /**
+       * Uninstalls filter.
+       **/
+      uninstallFilter: AugmentedRpc<(index: U256 | AnyNumber | Uint8Array) => Observable<bool>>;
    };
    grandpa: {
      /**
@@ -291,6 +331,12 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       **/
      subscribeJustifications: AugmentedRpc<() => Observable<JustificationNotification>>;
    };
+    mmr: {
+      /**
+       * Generate MMR proof for given leaf index.
+       **/
+      generateProof: AugmentedRpc<(leafIndex: u64 | AnyNumber | Uint8Array, at?: BlockHash | string | Uint8Array) => Observable<MmrLeafProof>>;
+    };
    net: {
      /**
       * Returns true if client is actively listening for network connections. Otherwise false.
@@ -309,11 +355,11 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
      /**
       * Get offchain local storage under given key and prefix
       **/
-      localStorageGet: AugmentedRpc<(kind: StorageKind | '__UNUSED' | 'PERSISTENT' | 'LOCAL' | number | Uint8Array, key: Bytes | string | Uint8Array) => Observable<Option<Bytes>>>;
+      localStorageGet: AugmentedRpc<(kind: StorageKind | 'PERSISTENT' | 'LOCAL' | number | Uint8Array, key: Bytes | string | Uint8Array) => Observable<Option<Bytes>>>;
      /**
       * Set offchain local storage under given key and prefix
       **/
-      localStorageSet: AugmentedRpc<(kind: StorageKind | '__UNUSED' | 'PERSISTENT' | 'LOCAL' | number | Uint8Array, key: Bytes | string | Uint8Array, value: Bytes | string | Uint8Array) => Observable<Null>>;
+      localStorageSet: AugmentedRpc<(kind: StorageKind | 'PERSISTENT' | 'LOCAL' | number | Uint8Array, key: Bytes | string | Uint8Array, value: Bytes | string | Uint8Array) => Observable<Null>>;
    };
    payment: {
      /**
@@ -340,6 +386,10 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Retrieves the keys with prefix of a specific child storage
       **/
      getChildKeys: AugmentedRpc<(childStorageKey: StorageKey | string | Uint8Array | any, childDefinition: StorageKey | string | Uint8Array | any, childType: u32 | AnyNumber | Uint8Array, key: StorageKey | string | Uint8Array | any, at?: BlockHash | string | Uint8Array) => Observable<Vec<StorageKey>>>;
+      /**
+       * Returns proof of storage for child key entries at a specific block state.
+       **/
+      getChildReadProof: AugmentedRpc<(childStorageKey: PrefixedStorageKey | string | Uint8Array, keys: Vec<StorageKey> | (StorageKey | string | Uint8Array | any)[], at?: BlockHash | string | Uint8Array) => Observable<ReadProof>>;
      /**
       * Retrieves the child storage for a key
       **/
@@ -404,6 +454,10 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Subscribes to storage changes for the provided keys
       **/
      subscribeStorage: AugmentedRpc<<T = Codec[]>(keys?: Vec<StorageKey> | (StorageKey | string | Uint8Array | any)[]) => Observable<T>>;
+      /**
+       * Provides a way to trace the re-execution of a single block
+       **/
+      traceBlock: AugmentedRpc<(block: Hash | string | Uint8Array, targets: Option<Text> | null | object | string | Uint8Array, storageKeys: Option<Text> | null | object | string | Uint8Array) => Observable<TraceBlockResponse>>;
    };
    syncstate: {
      /**
@@ -472,6 +526,10 @@ declare module '@polkadot/rpc-core/types.jsonrpc' {
       * Remove a reserved peer
       **/
      removeReservedPeer: AugmentedRpc<(peerId: Text | string) => Observable<Text>>;
+      /**
+       * Returns the list of reserved peers
+       **/
+      reservedPeers: AugmentedRpc<() => Observable<Vec<Text>>>;
      /**
       * Resets the log filter to Substrate defaults
       **/
--- a/Show More
+++ b/Show More