A time-stamped, tamper-evident log that records every action taken on a digital waiver, including when it was presented, signed, modified, or accessed. Audit trails are a critical compliance feature for operators in high-liability activities like ziplines, axe throwing, or white-water rafting, where the ability to prove that a specific guest signed a specific version of a waiver on a specific date can determine the outcome of a legal dispute. A strong audit trail should capture the signer's IP address, device type, timestamp, waiver version number, and any subsequent access or modifications to the record.