numeric) total SigOps cost, as counted for purposes of block limits; if key is not present, sigop cost is unknown and clients MUST NOT assume it is zero
         "weight" : n,                (numeric) total transaction weight, as counted for purposes of block limits
         "required" : true|false      (boolean) if provided and true, this transaction must be in the final block
      }
      ,...
  ],
  "coinbaseaux" : {                 (json object) data that should be included in the coinbase's scriptSig 