Create a Transaction

Creating a Transaction

This how to create a transaction. The script must be a hex string generated by ScriptBuilder.EndScript().

import { Base16, PhantasmaKeys, Transaction } from "phantasma-sdk-ts";

const NexusName = "testnet"; // Could also be simnet or mainnet
const ChainName = "main"; // Since we only have the main chain, it's always main.
const payload = Base16.encode("Phantasma-NodeJS"); // This is what going to appear on the explorer and on the wallet.
const script = "YOUR_SCRIPT_HEX"; // In string format

const expiration: Date = new Date(Date.UTC(
  new Date().getUTCFullYear(),
  new Date().getUTCMonth(),
  new Date().getUTCDate(),
  new Date().getUTCHours() + 1,
  new Date().getUTCMinutes() + 10,
  new Date().getUTCSeconds() + 10
));

const transaction = new Transaction(
  NexusName, // Nexus Name
  ChainName, // Chain
  script, // In string format
  expiration, // Date Object
  payload // Extra Info to attach to Transaction in Serialized Hex
);

Sign a Transaction

Now we need to sign the transaction if we want it to be accepted by the blockchain.

const wif = "YOUR_WIF"; // REPLACE with WIF of your wallet
const keys = PhantasmaKeys.fromWIF(wif);

transaction.signWithKeys(keys);
const transactionSignedHex = transaction.toString(true);