To DoubleSha256 or Scrypt in bitcore

gistfile1.txt

BlockHeader.prototype._getHash = function hash() {
  var buf = this.toBuffer();
  //console.log("version",this.version, "is it?",this.version === 514 )
  //console.log("Scrypt",BufferUtil.reverse(BufferUtil.scrypt(buf)).toString('hex'))//.reverse(buf.read(80)).toString('hex'))
  if (this.version === 514) {
	  return BufferUtil.reverse(BufferUtil.reverse(BufferUtil.scrypt(buf)))
  } else {
	  return Hash.sha256sha256(buf);
  }  
};