MinContributionUpdated

Event v273 → current #7

Emitted when minimum contribution is updated.

View events on chain

Useful for: stakersdevelopersanalytics

The Big Picture

Minimum contribution changed.

Use Cases

Track parameter changes

From Chain Metadata

The minimum contribution was updated.

Triggers

Emitted by

update_min_contribution

Preconditions

Crowdloan not finalized
Creator updated

Effects

Storage Modified

Crowdloans

Postconditions

New minimum in effect

Event Data

#	Name	Type	Description
0	crowdloan_id	u32	Crowdloan identifier
1	new_min_contribution	u64	New minimum (RAO)

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

Runtime Info

Pallet Index: 27
Event Index: 7
First Version: v273
Current Version: v393

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