Bitcoin segwit vanity address generator

index.js

const bitcoin = require("bitcoinjs-lib")
const axios = require("axios")

var find_str = "3BMEX"; // find 5 first char or string
var is_bmex = false
while(is_bmex === false){
	var NETWORK = bitcoin.networks.bitcoin

	var privatekey = bitcoin.ECPair.makeRandom().toWIF();
	var keyPair = bitcoin.ECPair.fromWIF(privatekey);
	var pubKey = keyPair.publicKey

	const { address } = bitcoin.payments.p2sh({
	  redeem: bitcoin.payments.p2wpkh({ pubkey: keyPair.publicKey }),
	});

	axios.get('https://blockchain.info/rawaddr/' + address)
	.then(function (response) {
		console.log(privatekey, address)
		console.log(response.data);
	});
  
	var str_3bmex = address.substring(0, 5);
	if(str_3bmex === find_str) {
		is_bmex = true
		console.log(privatekey,address);			
	}
}

packacge.json

{
  "name": "segwit",
  "version": "1.0.0",
  "description": "Bitcoin vanity address generator",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "MIT",
  "dependencies": {
    "axios": "^0.19.0",
    "bitcoinjs-lib": "^5.1.6"
  }
}