Poison follows support edges to T-4, T-8, O-3.
- Claim C-17 is proposedClaim C-17 enters with provenance and begins epistemically unverified, authoritatively proposed, and current.
- Known consumers cite the proposed claimT-4, T-8, O-3 record support edges to C-17; each becomes a causal consumer rather than an awareness-only reader.
- New evidence disputes C-17Claim-type verification produces contradictory evidence under a recorded method, environment, result, and artifact identity.
- Policy or review marks C-17 poisonedAn append-only ledger event atomically commits the poison decision as a poison epoch with the known affected set, and preserves the earlier proposal and evidence history.
- Known consumers inherit a poisoned dependencyT-4, T-8, O-3 receive a visible poisoned-support state. Consumers may learn of the correction asynchronously; the poison epoch, not instantaneous propagation, preserves the safety property.
- The poison-epoch fence stops stale effectsOutputs are quarantined, active work is recalled, and any worker, result, or merge candidate that has not reconciled beyond the poison epoch is forbidden from committing.
- Repair and retest tasks are issuedThe manager creates scoped repair, re-derivation, and retest orders with required evidence for each affected consumer.
- Replacement claim C-21 is verifiedC-21 records the corrected claim, links itself as superseding C-17, and is ratified only if policy permits.
- Epoch N+1: revised sealed orders issuedThe official ledger decision records C-21, advances Epoch N+1, invalidates stale orders, and ensures current consumers receive revised current sealed orders.
Every evidence record carries
- artifact ID
- source
- date
- environment
- claim tested
- method
- result
- epistemic state
- authority state
- currency
- consumers
- establishes
- does not establish
- supersedes/superseded-by links
Epoch N+1: revised sealed orders issued. Containment ends with the replacement claim in the ledger and revised current sealed orders—not with poison classification alone.