Primary use case
AI / ML model governance
Every governed AI decision produces a sealed audit artifact anchored on a public log: from run 238 on (2026-10-16, 17:06 UTC) the complete record of a successful run, before then the run's identity and (from leaf v5) its 33 pre-anchor values, so a later change to what is anchored no longer matches the public log; from run 239 on, deleting the complete-record anchor also fails verification. Since verifier 0.12.0, a public-log entry counts only if it is signed with a published Verdifax log-signing key and the timestamp the log signs for it verifies, so a rewritten record that anyone else logs as a new entry fails. Verdifax holds that key. From run 240 on, each record seals a 600-second anchoring window, so a later re-log, even by Verdifax, fails or must carry a new sealed date; earlier records show their authenticated anchoring time but cannot fail on it. AIVP (AI Verification Protocol) runs live against the Anthropic Claude API: when a governed run includes AI output text, that text is sent to the Claude API for a governance review, and a hash of the text and the review's PIA hash are sealed into the manifest. Compliance teams can give the artifact to auditors and regulators as a record of what ran; legal teams can offer it as evidence, with admissibility decided by the court; engineering teams use the same record to debug and reproduce decisions.
