Method GetWitnessOnlyHash

src/primitives/transaction.cpp:95–120

ELEMENTS ONLY

// ELEMENTS ONLY
uint256 CTransaction::GetWitnessOnlyHash() const
{
    assert(g_con_elementsmode);

    std::vector<uint256> leaves;
    leaves.reserve(std::max(vin.size(), vout.size()));
    /* Inputs */
    for (size_t i = 0; i < vin.size(); ++i) {
        // Input has no witness OR is null input(coinbase)
        const CTxInWitness& txinwit = (witness.vtxinwit.size() <= i || vin[i].prevout.IsNull()) ? CTxInWitness() : witness.vtxinwit[i];
        leaves.push_back(txinwit.GetHash());
    }
    uint256 hashIn = ComputeFastMerkleRoot(leaves);
    leaves.clear();
    /* Outputs */
    for (size_t i = 0; i < vout.size(); ++i) {
        const CTxOutWitness& txoutwit = witness.vtxoutwit.size() <= i ? CTxOutWitness() : witness.vtxoutwit[i];
        leaves.push_back(txoutwit.GetHash());
    }
    uint256 hashOut = ComputeFastMerkleRoot(leaves);
    leaves.clear();
    /* Combined */
    leaves.push_back(hashIn);
    leaves.push_back(hashOut);
    return ComputeFastMerkleRoot(leaves);
}

CTransaction::CTransaction(const CMutableTransaction& tx) :
        vin(tx.vin), vout(tx.vout), nVersion(tx.nVersion), nLockTime(tx.nLockTime), witness(tx.witness), hash{ComputeHash()}, m_witness_hash{ComputeWitnessHash()} {}