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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 { Keyring } = require('@polkadot/keyring');
const BOB = '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty';
async function main () {
// Instantiate the API
const api = await ApiPromise.create();
// Constuct the keyring 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());