Impact

Measured impact — not promises.

MVG publishes impact definitions that are tied to receipts: deterministic outputs, stable reason codes, and replayable verifier runs. When evidence is missing or uncertain, systems must HOLD (fail‑closed).

Prevention Fail‑closed

Side effect prevention

Metric family: unpermitted action attempts → HOLD/DENY rate. Evidence source: receipts + reason codes pinned in the conformance pack.

Replay Offline

Audit replay success

Metric family: reproducible verification success rate (offline). Evidence source: verifier output + signed manifests + deterministic replays.

Adoption Procurement

Time to approval reduction

Metric family: ticket completion time & evidence round‑trips (before/after). Evidence source: DSSE pointers + attachables + expected outputs (GO/HOLD).

Annual Public method NDA‑safe

Safety & Impact Report (annual)

We publish measurement definitions and methods without disclosing customer‑sensitive data. Where numbers cannot be shared publicly, we can provide anonymized aggregates or audit‑ready receipts under NDA.

Note: MVG pages are display-only. Signed artifacts are authoritative. This is not a certification and not legal/medical advice.

Receipt‑native metrics One screen

A metric is a replayable receipt query.

We publish definitions and measurement methods that can be replayed offline. Where evidence is missing, the only safe output is HOLD.

METRIC FAMILIES PROOF SOURCE Side effect prevention Unpermitted action attempts → HOLD/DENY rate (reason‑coded) Receipts + reason codes (pinned) Audit replay success Offline verification success rate (deterministic) Conformance Pack + verifier output Time to approval reduction Ticket completion time (before/after) — method published DSSE pointers + pack outputs
Public safe We publish measurement methods first. Aggregate numbers (if any) are released only when they are reproducible and non‑sensitive.

Signing ceremony runbook: /trust/site-release/#signing-ceremony