GetOwnerAuditInfo returns the audit info of the owner.

GetScriptSenderAndRecipient returns the script's sender and recipient according to the type of the given owner.

MetadataClaimKeyCheck checks that the claim key is in place.

MetadataLockKeyCheck checks that the lock key is in place.

VerifyOwner validates the owners of the transfer in the htlc script.

ScriptInfo includes info about the sender and the recipient.