Withdrawal

When it comes to withdrawals there are several notes that needs to be taken into account:

• Withdrawal flow consist of two steps:
  • Executing withdrawal transaction on L2 which initiates submission to L1.
  • Executing finalize withdrawal after the withdrawal transaction is submitted to L1.
• The duration for submitting a withdrawal transaction to L1 can last up to 24 hours.
• On the testnet, withdrawals are automatically finalized. There is no need to execute finalize withdrawal step, otherwise, an error with code jj would occur.

Withdraw ETH

This is an example of how to withdraw ETH from zkSync Era network (L2) to Ethereum network (L1):

import { Provider, types, utils, Wallet } from "zksync2-js";
import { ethers } from "ethers";

const provider = Provider.getDefaultProvider(types.Network.Goerli);
const ethProvider = ethers.getDefaultProvider("goerli");
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const wallet = new Wallet(PRIVATE_KEY, provider, ethProvider);

async function main() {
  console.log(`L2 balance before withdraw: ${await wallet.getBalance()}`);
  console.log(`L1 balance before withdraw: ${await wallet.getBalanceL1()}`);

  const tx = await wallet.withdraw({
    token: utils.ETH_ADDRESS,
    to: await wallet.getAddress(),
    amount: 7_000_000_000,
  });
  const receipt = await tx.wait();
  console.log(`Tx: ${receipt.hash}`);
}

main()
  .then()
  .catch((error) => {
    console.log(`Error: ${error}`);
  });

Withdraw tokens

This is an example of how to withdraw tokens from zkSync Era network (L2) to Ethereum network (L1):

import { Provider, types, Wallet } from "zksync2-js";
import { ethers } from "ethers";

const provider = Provider.getDefaultProvider(types.Network.Goerli);
const ethProvider = ethers.getDefaultProvider("goerli");
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const wallet = new Wallet(PRIVATE_KEY, provider, ethProvider);

async function main() {
  const token = "0xCd9BDa1d0FC539043D4C80103bdF4f9cb108931B";

  console.log(`L2 balance before withdrawal: ${await wallet.getBalance()}`);
  console.log(`L1 balance before withdrawal: ${await wallet.getBalanceL1()}`);

  const tx = await wallet.withdraw({
    token: token,
    to: await wallet.getAddress(),
    amount: 5,
  });
  const receipt = await tx.wait();
  console.log(`Tx: ${receipt.hash}`);
}

main()
  .then()
  .catch((error) => {
    console.log(`Error: ${error}`);
  });

Finalize withdrawal

import { Provider, types, Wallet } from "zksync2-js";
import { ethers } from "ethers";

const provider = Provider.getDefaultProvider(types.Network.Goerli);
const ethProvider = ethers.getDefaultProvider("goerli");
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const wallet = new Wallet(PRIVATE_KEY, provider, ethProvider);

const WITHDRAW_TX = process.env.WITHDRAW_TX;

async function main() {
  if (!wallet.isWithdrawalFinalized(WITHDRAW_TX)) {
    const finalizeWithdrawTx = await wallet.finalizeWithdrawal(WITHDRAW_TX);
    const receipt = await finalizeWithdrawTx.wait();
    console.log(`Tx: ${receipt.hash}`);

    console.log(`L2 balance after withdraw: ${await wallet.getBalance()}`);
    console.log(`L1 balance after withdraw: ${await wallet.getBalanceL1()}`);
  }
}

main()
  .then()
  .catch((error) => {
    console.log(`Error: ${error}`);
  });