SignatureHashSchnorr

Compute the BIP341 Taproot signature hash for one input.

Synopsis

Declared in <script/interpreter.h>

template<typename T>
bool
SignatureHashSchnorr(
    uint256& hash_out,
    ScriptExecutionData& execdata,
    T const& tx_to,
    uint32_t in_pos,
    uint8_t hash_type,
    SigVersion sigversion,
    PrecomputedTransactionData const& cache,
    MissingDataBehavior mdb);

Return Value

true if the hash was computed successfully.

Template Parameters

Name

Description

The transaction type being signed.

Parameters

Name

Description

hash_out

Receives the computed signature hash.

execdata

Per‐input execution state used by the sighash.

tx_to

The transaction whose input is being signed.

in_pos

Index of the input being signed.

hash_type

The sighash type byte.

sigversion

The signature version (TAPROOT or TAPSCRIPT).

cache

Precomputed transaction data required for Taproot.

mdb

How to react when required spent‐output data is missing.

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