code: function TXResponse(options) {
    if (!(this instanceof TXResponse))
      return new TXResponse(options);
  
    this.hash = encoding.NULL_HASH;
    this.txs = [];
  
    if (options)
      this.fromOptions(options);
  }
docs: Represents BlockTransactions (bip152): `blocktxn` packet.
  @see https://github.com/bitcoin/bips/blob/master/bip-0152.mediawiki
  @constructor
  @param {Object} options
  @property {Hash} hash
  @property {TX[]} txs