Withdrew

Event v273 → current #2

Emitted when a contribution is withdrawn from a crowdloan.

View events on chain

Useful for: stakersdevelopersanalytics

The Big Picture

A contributor has exited a campaign.

Use Cases

Track withdrawals

From Chain Metadata

A contribution was withdrawn from a failed crowdloan.

Triggers

Emitted by

withdraw

Preconditions

Crowdloan not finalized
Contributor has contribution

Effects

Storage Modified

Contributions Crowdloans

Postconditions

Contribution returned

Side Effects

Total raised decreased

Event Data

#	Name	Type	Description
0	crowdloan_id	u32	Crowdloan identifier
1	contributor	AccountId	Account that withdrew (hex -> SS58)
2	amount	u64	Amount withdrawn (RAO) (RAO -> TAO (/ 10^9))

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Subscribe to Withdrew events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("Crowdloan") &&
      event.method === "Withdrew"
    )
    .forEach(({ event }) => {
      console.log("Withdrew:", event.data.toHuman());
    });
});

Runtime Info

Pallet Index: 27
Event Index: 2
First Version: v273
Current Version: v393

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