DustLost

Event v101 → current #1

Emitted when an account's remaining balance is below existential deposit.

View events on chain

From Chain Metadata

An account was removed whose balance was non-zero but below ExistentialDeposit, resulting in an outright loss.

Triggers

Preconditions

Account balance fell below existential deposit
Balance was non-zero

Effects

Postconditions

Remaining balance removed from account
Dust amount lost/burned

Side Effects

Account may be reaped

Event Data

#	Name	Type	Description
0	account	AccountId	account: Account address (32 bytes, SS58-encoded) (hex -> SS58)
1	amount	u64 T::Balance	amount: Balance in chain native currency (RAO for TAO; ÷10⁹) (RAO -> TAO (/ 10^9))

Code Examples

import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443

const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);

// Subscribe to DustLost events
client.finalizedBlock$.subscribe(async (block) => {
  const events = await api.event.Balances.DustLost.get(block.hash);
  for (const evt of events) {
    console.log("DustLost:", evt.payload);
  }
});

On-Chain Activity

Emission Frequency

●●○○○○ Moderate 10K–100K emissions

Occasional use

#43 most emitted event

As of block 7,429,232

Runtime Info

Pallet Index: 5
Event Index: 1
First Version: v101
Current Version: v411

Back to Balances Events