BIP38 Derived Public/Private key Bitcore.js

bitcore-dirived-private-public.js

var bitcore = require('bitcore');
var assert = require('assert');

var index = 1;

// Create a new HD private key.
var hdPrivateKey = new bitcore.HDPrivateKey(); //returns xpriv...
//Use private key to create drived public key.
var hdPublicKey = hdPrivateKey.hdPublicKey;
// Derive address from public key
var derivedPublic = hdPublicKey.derive(index).publicKey.toAddress();
// Derive address from private key
var derivedPrivate = hdPrivateKey.derive(index).privateKey.toAddress();

assert(derivedPublic.toString() === derivedPrivate.toString()); // true