Screen 07[REAL]SYNTHETIC
Proof of Mitigation Certificate
Signed forensic certificate with replay logs and mutation results attached. See .
Story · one decision, end to endCustomer Support · Ticket VR-NS-001— LLM invented a refund policy that did not exist
Screen anatomy
Certificate id
POM-VR-NORTH-A17
[REAL]dev-HMAC
not publicly verifiable · WO-35
- scenario
- vr-northstar-001
- org / env
- meridian-assurance / demo [MOCK tenant]
- evidence_level
- E3
- cassette
- sha256:d81a…4471
- captured
- TOLD CUSTOMER: 'apply within 90 days for refund'
- replayed_under_fix
- REFUSED, escalated to human agent with policy request logged
- issued_at
- 2026-07-25T18:00:00Z
Known limitation —
Cryptographic sealing establishes non-tampering after capture. It does not prove the captured evidence was accurate or complete at capture. This limitation is included on every certificate regardless of evidentiary class.
HMAC signature (SHA-256)
signing…
Attached artifacts
- Sealed cassettesha256:d81a…4471
- Replay logverified
- Mutation resultno regression
- Reviewer dispositionapproved
Roadmap
Asymmetric KMS signing (WO-35), RFC 3161 timestamping (WO-36) and S3 Object Lock (WO-37) land in Stage 3 before this certificate is cited to auditors or insurers. See Screen 13 — Roadmap.