api/docs/substrate/events.md

Events

Events are emitted for certain operations on the runtime. The following sections describe the events that are part of the default Substrate runtime.

(NOTE: These were generated from a static/snapshot view of a recent Substrate master node. Some items may not be available in older nodes, or in any customized implementations.)

• balances

• contracts

• council

• democracy

• elections

• grandpa

• imOnline

• indices

• offences

• session

• staking

• sudo

• system

• technicalCommittee

• technicalMembership

• treasury

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balances

▸ NewAccount(AccountId, Balance)

• summary: A new account was created.

▸ ReapedAccount(AccountId)

• summary: An account was reaped.

▸ Transfer(AccountId, AccountId, Balance, Balance)

• summary: Transfer succeeded (from, to, value, fees).

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contracts

▸ CodeStored(Hash)

• summary: Code with the specified hash has been stored.

▸ Contract(AccountId, Bytes)

• summary: An event from contract of account.

▸ Dispatched(AccountId, bool)

• summary: A call was dispatched from the given account. The bool signals whether it was successful execution or not.

▸ Instantiated(AccountId, AccountId)

• summary: Contract deployed by address at the specified address.

▸ ScheduleUpdated(u32)

• summary: Triggered when the current schedule is updated.

▸ Transfer(AccountId, AccountId, Balance)

• summary: Transfer happened from to to with given value as part of a call or instantiate.

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council

▸ Approved(Hash)

• summary: A motion was approved by the required threshold.

▸ Disapproved(Hash)

• summary: A motion was not approved by the required threshold.

▸ Executed(Hash, bool)

• summary: A motion was executed; bool is true if returned without error.

▸ MemberExecuted(Hash, bool)

• summary: A single member did some action; bool is true if returned without error.

▸ Proposed(AccountId, ProposalIndex, Hash, MemberCount)

• summary: A motion (given hash) has been proposed (by given account) with a threshold (given MemberCount).

▸ Voted(AccountId, Hash, bool, MemberCount, MemberCount)

• summary: A motion (given hash) has been voted on by given account, leaving a tally (yes votes and no votes given respectively as MemberCount).

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democracy

▸ Cancelled(ReferendumIndex)

▸ Delegated(AccountId, AccountId)

▸ Executed(ReferendumIndex, bool)

▸ ExternalTabled()

▸ NotPassed(ReferendumIndex)

▸ Passed(ReferendumIndex)

▸ Proposed(PropIndex, Balance)

▸ Started(ReferendumIndex, VoteThreshold)

▸ Tabled(PropIndex, Balance, Vec<AccountId>)

▸ Undelegated(AccountId)

▸ Vetoed(AccountId, Hash, BlockNumber)

---

elections

▸ BadReaperSlashed(AccountId)

• summary: slashed reaper

▸ TallyFinalized(Vec<AccountId>, Vec<AccountId>)

• summary: A tally (for approval votes of seat(s)) has ended (with one or more new members).

▸ TallyStarted(u32)

• summary: A tally (for approval votes of seat(s)) has started.

▸ VoterReaped(AccountId, AccountId)

• summary: reaped voter, reaper

---

grandpa

▸ NewAuthorities(Vec<(AuthorityId,AuthorityWeight)>)

• summary: New authority set has been applied.

▸ Paused()

• summary: Current authority set has been paused.

▸ Resumed()

• summary: Current authority set has been resumed.

---

imOnline

▸ HeartbeatReceived(AuthorityId)

• summary: A new heartbeat was received from AuthorityId

---

indices

▸ NewAccountIndex(AccountId, AccountIndex)

• summary: A new account index was assigned. This event is not triggered when an existing index is reassigned to another AccountId.

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offences

▸ Offence(Kind, OpaqueTimeSlot)

• summary: 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.

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session

▸ NewSession(SessionIndex)

• summary: New session has happened. Note that the argument is the session index, not the block number as the type might suggest.

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staking

▸ OldSlashingReportDiscarded(SessionIndex)

• summary: An old slashing report from a prior era was discarded because it could not be processed.

▸ Reward(Balance)

• summary: All validators have been rewarded by the given balance.

▸ Slash(AccountId, Balance)

• summary: One validator (and its nominators) has been slashed by the given amount.

---

sudo

▸ KeyChanged(AccountId)

• summary: The sudoer just switched identity; the old key is supplied.

▸ Sudid(bool)

• summary: A sudo just took place.

▸ SudoAsDone(bool)

• summary: A sudo just took place.

---

system

▸ ExtrinsicFailed(DispatchError)

• summary: An extrinsic failed.

▸ ExtrinsicSuccess()

• summary: An extrinsic completed successfully.

---

technicalCommittee

▸ Approved(Hash)

• summary: A motion was approved by the required threshold.

▸ Disapproved(Hash)

• summary: A motion was not approved by the required threshold.

▸ Executed(Hash, bool)

• summary: A motion was executed; bool is true if returned without error.

▸ MemberExecuted(Hash, bool)

• summary: A single member did some action; bool is true if returned without error.

▸ Proposed(AccountId, ProposalIndex, Hash, MemberCount)

• summary: A motion (given hash) has been proposed (by given account) with a threshold (given MemberCount).

▸ Voted(AccountId, Hash, bool, MemberCount, MemberCount)

• summary: A motion (given hash) has been voted on by given account, leaving a tally (yes votes and no votes given respectively as MemberCount).

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technicalMembership

▸ Dummy(PhantomData)

• summary: Phantom member, never used.

▸ MemberAdded()

• summary: The given member was added; see the transaction for who.

▸ MemberRemoved()

• summary: The given member was removed; see the transaction for who.

▸ MembersReset()

• summary: The membership was reset; see the transaction for who the new set is.

▸ MembersSwapped()

• summary: Two members were swapped; see the transaction for who.

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treasury

▸ Awarded(ProposalIndex, Balance, AccountId)

• summary: Some funds have been allocated.

▸ Burnt(Balance)

• summary: Some of our funds have been burnt.

▸ Proposed(ProposalIndex)

• summary: New proposal.

▸ Rollover(Balance)

• summary: Spending has finished; this is the amount that rolls over until next spend.

▸ Spending(Balance)

• summary: We have ended a spend period and will now allocate funds.