Standing challenge

Break the Chain

Forge or tamper with an evidence chain on a scoped staging target. Successful in-scope findings earn named hall-of-fame credit recorded as a permanent chain event. No cash reward.

Responsible disclosure for production issues is separate and mandatory: security.txt / /security.

Hardening gate

Status: not yet open

PASSRepair endpoint removed (never rewrite chain hashes)Attested: never_repair migration + CI check-evidence-append-only (BUILD-SPEC Step 5 / v14)
PASSIdempotency-Key live on evidence writesAttested: lib/idempotency.ts + evidence_idempotency_keys (BUILD-SPEC Step 5)
PASSThreat model documentedAttested: docs-internal/THREAT-MODEL.md (BUILD-SPEC Step 15)
FAILExternal security review completedSet HARDENING_EXTERNAL_REVIEW_COMPLETED_AT after a real external review

As of 2026-10-01T01:04:08.536Z

Scoped targets

Staging chain integrity room break-the-chain-staging · stagingAllowed: forge, tamper, idempotency_bypass

Attempt tally

Published count from named query cq_break_the_chain_attempts: 0

Hall of fame

No accepted recognition credits yet.

Challenge submissions stay closed until the hardening gate passes. See docs-internal/HARDENING-GATE-REVIEW.md for how external review attestation unlocks attempts.