Make a simple transfer

This sample shows how to create a transaction to make a transfer from one account to another.

// Import the API, Keyring and some utility functions

const { ApiPromise } = require('@polkadot/api');

const { typesBundleForPolkadot } = require('@crustio/type-definitions');

const { Keyring } = require('@polkadot/keyring');

const BOB = '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty';

async function main () {

// Instantiate the API

const api = await ApiPromise.create({

provider: new WsProvider('ws://127.0.0.1:9944'),

typesBundle: typesBundleForPolkadot

});

// Constuct the keying after the API (crypto has an async init)

const keyring = new Keyring({ type: 'sr25519' });

// Add Alice to our keyring with a hard-deived path (empty phrase, so uses dev)

const alice = keyring.addFromUri('//Alice');

// Create a extrinsic, transferring 12345 units to Bob

const transfer = api.tx.balances.transfer(BOB, 12345);

// Sign and send the transaction using our account

const hash = await transfer.signAndSend(alice);

console.log('Transfer sent with hash', hash.toHex());

}

main().catch(console.error).finally(() => process.exit());