Esempio n. 1
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def helloblock_fetchtx(txhash, network="btc"):
    if isinstance(txhash, list):
        return [helloblock_fetchtx(h) for h in txhash]
    if not re.match("^[0-9a-fA-F]*$", txhash):
        txhash = txhash.encode("hex")
    if network == "testnet":
        url = "https://testnet.helloblock.io/v1/transactions/"
    elif network == "btc":
        url = "https://mainnet.helloblock.io/v1/transactions/"
    else:
        raise Exception("Unsupported network {0} for helloblock_fetchtx".format(network))
    data = json.loads(make_request(url + txhash).decode("utf-8"))["data"]["transaction"]
    o = {"locktime": data["locktime"], "version": data["version"], "ins": [], "outs": []}
    for inp in data["inputs"]:
        o["ins"].append(
            {
                "script": inp["scriptSig"],
                "outpoint": {"index": inp["prevTxoutIndex"], "hash": inp["prevTxHash"]},
                "sequence": 4294967295,
            }
        )
    for outp in data["outputs"]:
        o["outs"].append({"value": outp["value"], "script": outp["scriptPubKey"]})
    from bitcoin.transaction import serialize
    from bitcoin.transaction import txhash as TXHASH

    tx = serialize(o)
    assert TXHASH(tx) == txhash
    return tx
Esempio n. 2
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def helloblock_fetchtx(txhash, network='btc'):
    if not re.match('^[0-9a-fA-F]*$', txhash):
        txhash = safe_hexlify(txhash)
    if network == 'testnet':
        url = 'https://testnet.helloblock.io/v1/transactions/'
    elif network == 'btc':
        url = 'https://mainnet.helloblock.io/v1/transactions/'
    else:
        raise Exception('Unsupported network {0} for helloblock_fetchtx'.format(network))
    data = request(url + txhash)["data"]["transaction"]
    o = {
        "locktime": data["locktime"],
        "version": data["version"],
        "ins": [],
        "outs": []
    }
    for inp in data["inputs"]:
        o["ins"].append({
            "script": inp["scriptSig"],
            "outpoint": {
                "index": inp["prevTxoutIndex"],
                "hash": inp["prevTxHash"],
            },
            "sequence": 4294967295
        })
    for outp in data["outputs"]:
        o["outs"].append({
            "value": outp["value"],
            "script": outp["scriptPubKey"]
        })
    from bitcoin.transaction import serialize
    from bitcoin.transaction import txhash as TXHASH
    tx = serialize(o)
    assert TXHASH(tx) == txhash
    return tx
Esempio n. 3
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def build_unsigned_single_tx(amount, fees, outputs):
        '''
        Builds an unsigned tx and returns it in a list
        '''
        txs = build_valid_single_tx(amount, fees, outputs)
        txjson = deserialize(txs[0])
        for inp in txjson["ins"]: inp['script'] = ''
        return [serialize(txjson)]
Esempio n. 4
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        o["ins"].append({
            "script": inp["scriptSig"],
            "outpoint": {
                "index": inp["prevTxoutIndex"],
                "hash": inp["prevTxHash"],
            },
            "sequence": 4294967295
        })
    for outp in data["outputs"]:
        o["outs"].append({
            "value": outp["value"],
            "script": outp["scriptPubKey"]
        })
    from bitcoin.transaction import serialize
    from bitcoin.transaction import txhash as TXHASH
    tx = serialize(o)
    assert TXHASH(tx) == txhash
    return tx


def webbtc_fetchtx(txhash, network='btc'):
    if not re.match('^[0-9a-fA-F]*$', txhash):
        txhash = safe_hexlify(txhash)
    if network == 'testnet':
        webbtc_url = 'http://test.webbtc.com/tx/'
    elif network == 'btc':
        webbtc_url = 'http://webbtc.com/tx/'
    else:
        raise Exception('Unsupported network {0} for webbtc_fetchtx'.format(network))
    hexdata = make_request(webbtc_url + txhash + ".hex")
    return st(hexdata)
Esempio n. 5
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        'sequence': UINT_MAX
    }],
    'outs': [{
        'script': opReturnScript,
        'value': 0
    }, {
        'script': lockScriptChangeAddr,
        'value': amount
    }],
    'locktime':
    0,
    'version':
    1
}

rawMainTX = bitcoinlibtransaction.serialize(mainTX)

## uncomment the next 3 lines if need to debug the transaction
# deserializedRawMainTX = bitcoinlibtransaction.deserialize(rawMainTX)
# print(deserializedRawMainTX)
# print("\n")

#
# sign raw transaction
#

signedRawMainTX = rpc._call(
    "signrawtransaction", rawMainTX
)  # I directly call the rpc method instead of using the lib rpc.signrawtransaction function as that function is expecting a transaction object. For the sake of the exercise, I construct the transaction manually. There are other methods to make the transaction, for instance: https://github.com/petertodd/python-bitcoinlib/blob/master/examples/spend-p2pkh-txout.py

#