Contributed

Event v273 → current #1

Emitted when TAO is contributed to a crowdloan.

View events on chain
Useful for: stakersdevelopersanalytics

The Big Picture

Someone has backed a crowdfunding campaign.

Use Cases

  • Track contributions
  • Monitor fundraising progress

From Chain Metadata

A contribution was made to an active crowdloan.

Triggers

Emitted by

contribute

Preconditions

  • Crowdloan is active
  • Contributor has balance
  • Meets minimum

Effects

Storage Modified

ContributionsCrowdloans

Postconditions

  • Contribution recorded
  • Funds transferred

Side Effects

  • Total raised increased

Event Data

#NameTypeDescription
0
crowdloan_id
u32 CrowdloanIdCrowdloan identifier
1
contributor
AccountId Account that contributed (hex -> SS58)
2
amount
u64 BalanceOf<T>Amount contributed (RAO) (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 Contributed events
client.finalizedBlock$.subscribe(async (block) => {
  const events = await api.event.Crowdloan.Contributed.get(block.hash);
  for (const evt of events) {
    console.log("Contributed:", evt.payload);
  }
});

Runtime Info

Pallet Index
27
Event Index
1
First Version
v273
Current Version
v411
Back to Crowdloan Events