Function PrecomputePSBTData

src/psbt.cpp:617–632

}

PrecomputedTransactionData PrecomputePSBTData(const PartiallySignedTransaction& psbt)
{
    const CMutableTransaction tx = psbt.GetUnsignedTx();
    bool have_all_spent_outputs = true;
    std::vector<CTxOut> utxos(psbt.inputs.size());
    for (size_t idx = 0; idx < psbt.inputs.size(); ++idx) {
        if (!psbt.inputs[idx].GetUTXO(utxos[idx])) have_all_spent_outputs = false;
    }
    PrecomputedTransactionData txdata{Params().HashGenesisBlock()};
    if (have_all_spent_outputs) {
        txdata.Init(tx, std::move(utxos), true);
    } else {
        txdata.Init(tx, {}, true);
    }
    return txdata;
}

bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, const PrecomputedTransactionData* txdata, int sighash,  SignatureData* out_sigdata, bool finalize)
{