A 32 byte private key that corresponds to the internal public key of the UTXO being spent and
can therefore be used to produce a valid signature for the transaction.
A reference to the unspent transaction output (UTXO) to be spent for this transaction. This
must be a pay-to-taproot (P2TR) output whose internal public key corresponds to the private key
provided.
A 32 byte private key that corresponds to the internal public key of the UTXO being spent and can therefore be used to produce a valid signature for the transaction.