toBech32.js

let bitcoin = require('bitcoinjs-lib')


function toBech32Add(compressedPubKeyAddress) {

    //TEST:
    //var compressedPubKeyAddress = '032a707c71d262046dbd1cfa2254b1c70ae179e1311ec37225e07fba343d741a44';
    //
    if (!Buffer.isBuffer(compressedPubKeyAddress)) compressedPubKeyAddress = Buffer.from(compressedPubKeyAddress, 'hex')
    var bech32 = bitcoin.networks.bech32;
    var keyPairs = [compressedPubKeyAddress].map(function (q) { return bitcoin.ECPair.fromPublicKeyBuffer(Buffer.from(q, 'hex'), bech32) });
    var keyPair = keyPairs[0];

    var pubKey = keyPair.getPublicKeyBuffer()

    var scriptPubKey = bitcoin.script.witnessPubKeyHash.output.encode(bitcoin.crypto.hash160(pubKey))
    return bitcoin.address.fromOutputScript(scriptPubKey)

}

module.exports = toBech32Add;


  //toBech32Add('032a707c71d262046dbd1cfa2254b1c70ae179e1311ec37225e07fba343d741a44')