import binascii import urllib2 import json from decimal import Decimal from filecache import filecache, DAY import types_pb2 as proto_types def insight_tx(url, rawdata=False): if not rawdata: try: f = urllib2.urlopen(url) data = json.load(f) except: raise Exception('URL error: %s' % url) else: data = url t = proto_types.TransactionType() t.version = data['version'] t.lock_time = data['locktime'] for vin in data['vin']: i = t.inputs.add() if 'coinbase' in vin.keys(): i.prev_hash = "\0"*32 i.prev_index = 0xffffffff # signed int -1 i.script_sig = binascii.unhexlify(vin['coinbase']) i.sequence = vin['sequence'] else: i.prev_hash = binascii.unhexlify(vin['txid']) i.prev_index = vin['vout'] i.script_sig = binascii.unhexlify(vin['scriptSig']['hex']) i.sequence = vin['sequence'] for vout in data['vout']: o = t.bin_outputs.add() o.amount = int(Decimal(str(vout['value'])) * 100000000) o.script_pubkey = binascii.unhexlify(vout['scriptPubKey']['hex']) return t class TXAPIBitcoin(object): @filecache(DAY) def get_tx(self, txhash): url = 'https://insight.bitpay.com/api/tx/%s' % txhash return insight_tx(url) class TXAPITestnet(object): @filecache(DAY) def get_tx(self, txhash): url = 'https://test-insight.bitpay.com/api/tx/%s' % txhash return insight_tx(url)