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blockcypher_mktx #131

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3 changes: 2 additions & 1 deletion bitcoin/bci.py
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Original file line number Diff line number Diff line change
Expand Up @@ -499,6 +499,7 @@ def get_block_height(txhash):
j = json.loads(make_request('https://blockchain.info/rawtx/'+txhash).decode("utf-8"))
return j['block_height']


# fromAddr, toAddr, 12345, changeAddress
def get_tx_composite(inputs, outputs, output_value, change_address=None, network=None):
"""mktx using blockcypher API"""
Expand All @@ -520,7 +521,7 @@ def get_tx_composite(inputs, outputs, output_value, change_address=None, network
}
if change_address:
data["change_address"] = change_address #
jdata = json.loads(make_request(url, data))
jdata = json.loads(make_request(url, json.dumps(data)))
hash, txh = jdata.get("tosign")[0], jdata.get("tosign_tx")[0]
assert bin_dbl_sha256(txh.decode('hex')).encode('hex') == hash, "checksum mismatch %s" % hash
return txh.encode("utf-8")
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