Create and Restore ETH Wallet with Ethers.js

Creating Wallet / ETH Address using Ether.js

To create new ETH Address, we can use some library like ethers.js . It enable us to interacting with the Ethereum Blockchain and its ecosystem.

Sample Code to Create New ETH Address (Node.JS)

const ethers = require('ethers');
const wallet = ethers.Wallet.createRandom();
console.log('address:', wallet.address);
console.log('mnemonic:', wallet.mnemonic.phrase);
console.log('privateKey:', wallet.privateKey);

Result :

address: 0xb985d345c4bb8121cE2d18583b2a28e98D56d04b
mnemonic: produce alley citizen bone enact settle hedgehog common plate dwarf lady someone
privateKey: 0x49723865a8ab41e5e8081839e33dff15ab6b0125ba3acc82c25df64e8a8668f5

We can also restore user’s wallet / address by using mnemonic:

const { Wallet } = require('ethers');
const wallet = Wallet.fromMnemonic('one two three four ...');

Or using mnemonic to create new Eth Address.

The Wallet.fromMnemonicfunction has a second argument to specify the BIP-32 derivation path. By default it will use m/44'/60'/0'/0/0, but if we want to get the second account, we can use m/44'/60'/0'/0/1for example:

const { Wallet } = require('ethers');
const wallet = Wallet.fromMnemonic('one two three four ...', `m/44'/60'/0'/0/1`);

Alternatively, we can use the HDNodeclass to quickly derive child keys from a mnemonic phrase. For example:

const { utils } = require('ethers');
const hdNode = utils.HDNode.fromMnemonic('one two three four ...');

const secondAccount = hdNode.derivePath(`m/44'/60'/0'/0/1`); // This returns a new HDNode
const thirdAccount = hdNode.derivePath(`m/44'/60'/0'/0/2`);

Later, we can use service like Alchemy or Infura as Provider to interact with Ethereum API

Thanks!!