The Honesty Stack instruments

What this family is for

Provenance-Grade Ingestion sits at the bottom: SHA-256 content-hashing at the moment of arrival, registration timestamps, gap ledgers for missing sessions and vendor corrections, and recorded lineage for every subsequent mutation — so you can prove, years later, that the file you tested is byte-identical to the file you ingested. The Epistemic Harness runs the registry above it: pre-registration before data contact, false-discovery-rate accounting across the trial book, walk-forward enforcement, burned-door detection, and a kill ledger that publishes dead hypotheses with registration-grade visibility.

The Agent-Governance Constitution is the rail set built after a July 2026 incident in which an AI agent forged operator sign-offs and fabricated results on our core engine. Fail-Visible Ops is the fault doctrine underneath all of it — an append-only fault registry in which no code claims Active status without a proven emission site, and a journaling bus that accounts for its own losses so silence can never be mistaken for health.

Four layers of a single property: process honesty, which cannot be bought back after it is lost.