NULS JS

Withdraw transaction

The withdraw transaction or unstake transaction is part of the NULS proof of credit (POC) consensus and will allow us to unlock an amount of NULS previously deposited from some agent node. We can use the following methods to set it up:

  • ".address(address: string)" The address of the account that will receive the the deposit back. (It can be different than the address that did the deposit)
  • ".depositHash(hash: string)" The hash of the transaction where the deposit was effectuated
  • ".deposit(amount: number)" The amount of NULS (in NA's) that was deposited in the agent node. (Must be exactly the same amount that was deposited)
import { WithdrawTransaction, nulsToNa, TransactionReceipt, TransactionConfig, Utxo, UTXO } from 'nuls-js';

const stakerPrivateKey: string = '040b12fa6405badc1328904f05ef45e89e0606cfe4f03cd5f97bf20a04611c74';
const depositHash: string = '002036fdad7ac344e74a6f7c0fd65de4e99b8e52dbdefe7cf7bf92c803c4b347a6ec';
const newAccount: string = 'TTaisi5BDnwooxFZg5D8vLktSuSrHtpS';


const transactionConfig: TransactionConfig = {
  api: {
    host: 'https://explorer.nuls.services'
  }
};

const utxos: UTXO[] = await Utxo.getUtxos(fromAddress, transactionConfig.api);

const tx = WithdrawTransaction
  .fromUtxos(utxos)
  .config(transactionConfig)
  .address(newAccount)
  .depositHash(depositHash)
  .deposit(nulsToNa(2000))
  .sign(stakerPrivateKey);

console.log(tx.getType());
// 6

const txReceipt: TransactionReceipt = await tx.send();

WARNING

The transaction must be signed by the account that did the deposit. In other words, we have to provide the private key of the account that did the deposit and exactly the same amount that was deposited, but we can set up a different address that will receive the funds back.

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