MatchScript parses the script items against the script.

SignatureHash computes the hash to be signed for a transaction's input using the new, optimized digest calculation algorithm defined in BIP0143: https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki.

sig hash type.

72 byte sig + 1 byte sig hash type.

1 byte push op code + 72 byte sig + 1 byte sig hash type.

1 byte push op code + 33 byte public key.

Sign all inputs, all outputs.

When combined, only sign contained input.

Sign all inputs, no outputs.

Sign all inputs, only the output at same index as input.

CantSign is returned when the unlocker can't sign the locking script.

CantUnlock is returned when the unlocker can't unlock the locking script.

NotFullyUnlocked will be returned from the unlock function when the unlocker provided partial unlocking but it is not complete.

ScriptNotMatching means the script doesn't match what it was being parsed against.

SigHashCache allows caching of previously calculated hashes used to calculate the signature hash for signing tx inputs.

TransactionWithOutputs is a transaction with spent outputs provided.

SigHashType represents hash type bits at the end of a signature.