build_tx.py: Use bitcoinlib to parse raw transactions when the Blockbook server could not find them. #4144
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segwit ids are not the full hash
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If the txid was not found using the api, allow the user to enter the raw transaction manually. Users can also enter the previous output in the format of raw_tx:vout instead of txid:vout (raw_tx is expected to be in hex format).
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@matejcik Fixed. The code now uses python-bitcoinlib. |
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I really like the
build_tx.pytool, and I patched it to be able to sign a transaction that spends a utxo of a transaction that hasn't been sent to the blockchain yet.In case the user wants to create two transactions, where the second spends the output of the first, he can do that without broadcasting them. This is useful in scenarios of relative timelocks (using nSequence).
The user can also specify "." as the blockbook host (instead of
btc1.trezor.io) and then the script will never send http requests and instead will ask the user to provide the previous raw-transaction for everyvin(could be useful in cases with privacy issues).I couldn't find any existing code in this project that parses raw transactions, so I used: https://pypi.org/project/bitcoinlib (if
bitcoinlibis not installed, the behavior remains the same).