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bitcoinbook/code/get-utxo.py

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# get unspent outputs from blockchain API
import json
import requests
# example address
address = '1Dorian4RoXcnBv9hnQ4Y2C1an6NJ4UrjX'
# The API URL is https://blockchain.info/unspent?active=<address>
# It returns a JSON object with a list "unspent_outputs", containing UTXO, like this:
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# { "unspent_outputs":[
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# {
# "tx_hash":"ebadfaa92f1fd29e2fe296eda702c48bd11ffd52313e986e99ddad9084062167",
# "tx_index":51919767,
# "tx_output_n": 1,
# "script":"76a9148c7e252f8d64b0b6e313985915110fcfefcf4a2d88ac",
# "value": 8000000,
# "value_hex": "7a1200",
# "confirmations":28691
# },
# ...
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# ]}
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resp = requests.get('https://blockchain.info/unspent?active=%s' % address)
utxo_set = json.loads(resp.text)["unspent_outputs"]
for utxo in utxo_set:
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print("%s:%d - %ld Satoshis" % (utxo['tx_hash'], utxo['tx_output_n'],
utxo['value']))
# Or try...
# print("{tx_hash}:{tx_output_n} - {value} Satoshis".format(**utxo))