diff --git a/docs/METHODS_RPC.md b/docs/METHODS_RPC.md
index 134f46e882..2015238830 100644
--- a/docs/METHODS_RPC.md
+++ b/docs/METHODS_RPC.md
@@ -67,6 +67,21 @@ _Query of state_
 ▸ **call**(method: `Text`, data: `Bytes`, block?: `Hash`): `Bytes`
 - **summary**: Perform a call to a builtin on the chain
 
+▸ **getChildKeys**(childStorageKey: `StorageKey`, prefix: `StorageKey`, block?: `Hash`): `Vec<StorageKey>`
+- **summary**: Retrieves the keys with prefix of a specific child storage
+
+▸ **getChildStorage**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `StorageData`
+- **summary**: Retrieves the child storage for a key
+
+▸ **getChildStorageHash**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `Hash`
+- **summary**: Retrieves the child storage hash
+
+▸ **getChildStorageSize**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `u64`
+- **summary**: Retrieves the child storage size
+
+▸ **getKeys**(prefix: `StorageKey`, block?: `Hash`): `Vec<StorageKey>`
+- **summary**: Retrieves the keys with a certain prefix
+
 ▸ **getMetadata**(block?: `Hash`): `Metadata`
 - **summary**: Returns the runtime metadata
 
diff --git a/docs/METHODS_STORAGE.md b/docs/METHODS_STORAGE.md
index 7e98680f24..430b7f6e6b 100644
--- a/docs/METHODS_STORAGE.md
+++ b/docs/METHODS_STORAGE.md
@@ -497,6 +497,9 @@ _These are keys that are always available to the runtime implementation_
 ▸ **changesTrieConfig**(): `u32`
 - **summary**: Changes trie configuration is stored under this key.
 
+▸ **childStorageKeyPrefix**(): `u32`
+- **summary**: Prefix of child storage keys.
+
 ▸ **code**(): `Bytes`
 - **summary**: Wasm code of the runtime.
 
diff --git a/lerna.json b/lerna.json
index f25a1fee8f..b893240370 100644
--- a/lerna.json
+++ b/lerna.json
@@ -9,5 +9,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.82.0-beta.10"
+  "version": "0.82.0-beta.11"
 }
diff --git a/package.json b/package.json
index 7b9fe228e2..d4c0645df6 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "private": true,
   "engines": {
     "yarn": "^1.10.1"
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index fc7516e70a..73e951a63c 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-contract",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Interfaces for interacting with contracts and contract ABIs",
   "main": "index.js",
   "keywords": [
@@ -27,6 +27,6 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-contract#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/types": "^0.82.0-beta.10"
+    "@polkadot/types": "^0.82.0-beta.11"
   }
 }
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index a6b6874860..801aeeb73d 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Common functions used across Polkadot, derived from RPC calls and storage queries.",
   "main": "index.js",
   "keywords": [
@@ -28,8 +28,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-derive#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/api": "^0.82.0-beta.10",
-    "@polkadot/types": "^0.82.0-beta.10",
+    "@polkadot/api": "^0.82.0-beta.11",
+    "@polkadot/types": "^0.82.0-beta.11",
     "@types/memoizee": "^0.4.2",
     "memoizee": "^0.4.14"
   },
diff --git a/packages/api/package.json b/packages/api/package.json
index 232cd2b76a..09fbb8cfe6 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
   "main": "index.js",
   "keywords": [
@@ -27,12 +27,12 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/api-derive": "^0.82.0-beta.10",
-    "@polkadot/extrinsics": "^0.82.0-beta.10",
-    "@polkadot/rpc-provider": "^0.82.0-beta.10",
-    "@polkadot/rpc-rx": "^0.82.0-beta.10",
-    "@polkadot/storage": "^0.82.0-beta.10",
-    "@polkadot/types": "^0.82.0-beta.10",
+    "@polkadot/api-derive": "^0.82.0-beta.11",
+    "@polkadot/extrinsics": "^0.82.0-beta.11",
+    "@polkadot/rpc-provider": "^0.82.0-beta.11",
+    "@polkadot/rpc-rx": "^0.82.0-beta.11",
+    "@polkadot/storage": "^0.82.0-beta.11",
+    "@polkadot/types": "^0.82.0-beta.11",
     "@polkadot/util-crypto": "^0.94.0-beta.3"
   },
   "devDependencies": {
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index 55e726d119..4cbd4e08f5 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
   "keywords": [
@@ -27,9 +27,9 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/jsonrpc": "^0.82.0-beta.10",
-    "@polkadot/rpc-provider": "^0.82.0-beta.10",
-    "@polkadot/types": "^0.82.0-beta.10",
+    "@polkadot/jsonrpc": "^0.82.0-beta.11",
+    "@polkadot/rpc-provider": "^0.82.0-beta.11",
+    "@polkadot/types": "^0.82.0-beta.11",
     "@polkadot/util": "^0.94.0-beta.3"
   }
 }
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index cfd5c02ca1..8b61283135 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-provider#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/storage": "^0.82.0-beta.10",
+    "@polkadot/storage": "^0.82.0-beta.11",
     "@polkadot/util": "^0.94.0-beta.3",
     "@polkadot/util-crypto": "^0.94.0-beta.3",
     "@types/nock": "^10.0.3",
diff --git a/packages/rpc-rx/package.json b/packages/rpc-rx/package.json
index dac1c37f9e..b0eac7c22e 100644
--- a/packages/rpc-rx/package.json
+++ b/packages/rpc-rx/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-rx",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "An RxJs wrapper around the Polkadot JS API",
   "main": "index.js",
   "keywords": [
@@ -27,8 +27,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-rx#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/rpc-core": "^0.82.0-beta.10",
-    "@polkadot/rpc-provider": "^0.82.0-beta.10",
+    "@polkadot/rpc-core": "^0.82.0-beta.11",
+    "@polkadot/rpc-provider": "^0.82.0-beta.11",
     "@types/memoizee": "^0.4.2",
     "@types/rx": "^4.1.1",
     "memoizee": "^0.4.14",
diff --git a/packages/type-extrinsics/package.json b/packages/type-extrinsics/package.json
index 7902710a97..3cb4344964 100644
--- a/packages/type-extrinsics/package.json
+++ b/packages/type-extrinsics/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/extrinsics",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "main": "index.js",
   "repository": "https://github.com/polkadot-js/api.git",
   "author": "Jaco Greeff <jacogr@gmail.com>",
@@ -11,7 +11,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/types": "^0.82.0-beta.10",
+    "@polkadot/types": "^0.82.0-beta.11",
     "@polkadot/util": "^0.94.0-beta.3"
   }
 }
diff --git a/packages/type-jsonrpc/package.json b/packages/type-jsonrpc/package.json
index 55bdb70a55..c989c0b093 100644
--- a/packages/type-jsonrpc/package.json
+++ b/packages/type-jsonrpc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/jsonrpc",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Method definitions for the Polkadot RPC layer",
   "main": "index.js",
   "publishConfig": {
diff --git a/packages/type-storage/package.json b/packages/type-storage/package.json
index ed84a19bf5..8d2b30eb26 100644
--- a/packages/type-storage/package.json
+++ b/packages/type-storage/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/storage",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Generic wrapper wrapper around state storage",
   "main": "index.js",
   "publishConfig": {
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/type-storage#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/types": "^0.82.0-beta.10",
+    "@polkadot/types": "^0.82.0-beta.11",
     "@polkadot/util": "^0.94.0-beta.3",
     "@polkadot/util-crypto": "^0.94.0-beta.3"
   },
diff --git a/packages/types/package.json b/packages/types/package.json
index bdb070dd89..e70ec11bb7 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "0.82.0-beta.10",
+  "version": "0.82.0-beta.11",
   "description": "Implementation of the Parity codec",
   "main": "index.js",
   "keywords": [