TransactionFeePaidWithAlpha

Event v401 → current New #121

Transaction fee was paid in Alpha .

From Chain Metadata

Transaction fee was paid in Alpha. Emitted in addition to `TransactionFeePaid` when the fee payment path is Alpha. `alpha_fee` is the exact Alpha amount deducted.

Event Data

#	Name	Type	Description
0	who	AccountId	Who account address (hex -> SS58)
1	netuid	u16	Subnet/network identifier (0-65535)
2	alpha_fee	u64	alpha_fee (u64) (RAO -> TAO (/ 10^9))
3	tao_amount	u64	tao_amount (u64) (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 TransactionFeePaidWithAlpha events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("SubtensorModule") &&
      event.method === "TransactionFeePaidWithAlpha"
    )
    .forEach(({ event }) => {
      console.log("TransactionFeePaidWithAlpha:", event.data.toHuman());
    });
});

Runtime Info

View Source

Pallet Index: 7
Event Index: 121
First Version: v401
Current Version: v401

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