calc
abstract fun calcTxSigHash(txData: ByteArray, sigHashType: ByteArray, inputIdx: Long, inputAmount: Long, prevoutScript: ByteArray): ByteArray
Calculate the signature hash (sighash) for the passed transaction.
Return
The hash to use when signing this input in binary format. signTxOneInputUsingSchnorr calculates this automatically. This function is used for external signers.
Parameters
tx
transaction serialized for signing
sig
signature hash algorithm selection
input
what input to sign
input
how many satoshis this input contains
prevout
the input's constraint script