Make a simple transfer
This sample shows how to create a transaction to make a transfer from one an account to another.
// @ts-check
// Import the API, Keyring and some utility functions
const { ApiPromise } = require('@polkadot/api');
const { Keyring } = require('@polkadot/keyring');
const { stringToU8a } = require('@polkadot/util');
// Important to note that we pad the seed to a length of 32 bytes using ' '
// The underlying seed needs to be exactly 32 bytes in length
const ALICE_SEED = 'Alice'.padEnd(32, ' ');
const BOB_ADDR = '5Gw3s7q4QLkSWwknsiPtjujPv3XM4Trxi5d4PgKMMk3gfGTE';
async function main () {
// Create an instance of the keyring
const keyring = new Keyring();
// Add Alice to our keyring (with the known seed for the account)
const alice = keyring.addFromSeed(stringToU8a(ALICE_SEED));
// Instantiate the API
const api = await ApiPromise.create();
// Create a extrinsic, transferring 12345 units to Bob
const transfer = api.tx.balances.transfer(BOB_ADDR, 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());