Generate Your Own Bitcoin Wallet within 5 Minutes
We are going to have a look at how to create your own Bitcoin wallets — Testnet and Mainnet, using a simple Node.js script. We can generate as many wallets (public/private key pairs) as you want instantly. We don’t need to use any third-party blockchain providers for this, as the wallet generation part is done offline.
In order to run the code given in this tutorial, we’ll need Node.js installed and configured on your PC which will not take even more than 5 minutes.
Without wasting much time on the introduction, let’s jump into the implementation part.
Currently there are three types of bitcoin address (P2PKH,P2SH Bech32) and we will be creating the most widely used address format — P2PKH
We can also create wallets from scratch without these libraries. But it involves more cryptographic algorithms to be implemented. So let's keep it simple.
mkdir btc-wallet && cd btc-wallet
npm init --y
npm install bip39 bip32 bitcoinjs-lib --save
You can find the full code as a gist here.
The output will be in this format (for testnet). Mainnet addresses start with 1.
The Key will be printed in WIF format as we used the
toWIF() method. We can also obtain the base58 format by using
the toBase58() method.
Cool. We have generated a Bitcoin wallet. Just play around with this code and generate as many wallets as you need.