# CAIN-42 Epochs 6-9 — Final Report
**Final Certification State: INCOMPLETE**

## 1. Executive Summary
Added standalone, tested libraries for environmental integrity (6), proof-carrying autonomy (7), continuous trust/proof (8) and federation (9), plus a real 40-attack campaign, 17 formal invariants, mutation testing, clean-room verifiers, chaos and performance runs. Nothing is wired into the live gateway/MCPGate, nothing is deployed, nothing is committed. The state is INCOMPLETE because of that (section 13/15), not because of failed tests.

## 2. Verified Capabilities (library level)
- Unauthenticated or forged observations are rejected fail-closed — 24/24 blocked (verifier: cleanroom_verify_epoch6.py (graph/journal); tests)
- A crash at any point of an action never causes a double-apply and resolves in-doubt effects safely — clean-room verified=True; real kill exit code 137 (verifier: scripts/cleanroom_verify_epoch6.py)
- Delegated authority never exceeds the delegator's — 12/12 blocked (verifier: INV-6-9-11 (300 random samples); scripts/cleanroom_verify_epoch7.py)
- Agent consensus cannot create authority — 8/8 blocked (verifier: INV-6-9-05)
- An authorization decision carries an independently checkable proof — clean-room agrees 5/5; false allow 0, false deny 0 (16 scenarios) (verifier: scripts/cleanroom_verify_epoch7.py)
- Trust cannot be raised with unverified evidence and decays without fresh evidence — 560 attacks, 560 blocked (verifier: INV-6-9-07; red-team corpus)
- Unknown changes are never treated as safe — unknown treated as safe: 0 (verifier: INV-6-9-17)
- Evidence chains and the continuous master root are replayable and tamper-evident — verified=True (verifier: scripts/cleanroom_verify_epoch8.py)
- Remote fabric trust never grants local authority — 16/16 blocked (verifier: INV-6-9-06, INV-6-9-16)
- Federation evidence and transparency-log inclusion proofs verify in a clean room — agrees with primary=True (verifier: scripts/cleanroom_verify_epoch9.py)
- 40 attack classes against the combined system are blocked — 40/40 blocked (verifier: tests/test_cain42_epoch6_9_master.py)
- 17 formal invariants hold over randomized inputs and are non-vacuous — 17/17 pass; 17/17 mutations caught by invariants alone (verifier: scripts/mutate_invariants.py)

## 3. Security Invariants
- INV-6-9-01 NO_AUTHORIZATION -> NO_EXECUTION: PASS (200 samples)
- INV-6-9-02 MEMORY != AUTHORITY: PASS (200 samples)
- INV-6-9-03 MODEL_OUTPUT != AUTHORITY: PASS (200 samples)
- INV-6-9-04 PLAN != AUTHORITY: PASS (100 samples)
- INV-6-9-05 CONSENSUS != AUTHORITY: PASS (100 samples)
- INV-6-9-06 REMOTE_TRUST != LOCAL_AUTHORITY: PASS (200 samples)
- INV-6-9-07 UNVERIFIED_EVIDENCE != VERIFIED_TRUST: PASS (100 samples)
- INV-6-9-08 UNKNOWN_WORLD_STATE -> NO_HIGH_RISK_EXECUTION: PASS (200 samples)
- INV-6-9-09 REVOKED_AUTHORITY -> NO_EXECUTION: PASS (100 samples)
- INV-6-9-10 EXPIRED_AUTHORITY -> NO_EXECUTION: PASS (200 samples)
- INV-6-9-11 DELEGATED_AUTHORITY <= DELEGATOR_AUTHORITY: PASS (300 samples)
- INV-6-9-12 TENANT_A_AUTHORITY != TENANT_B_AUTHORITY: PASS (200 samples)
- INV-6-9-13 MISSING_PROVENANCE -> REDUCED_TRUST OR DENIAL: PASS (150 samples)
- INV-6-9-14 UNVERIFIED_CONSEQUENTIAL_EFFECT -> UNRESOLVED_EXECUTION_STATE: PASS (150 samples)
- INV-6-9-15 UNVERIFIED_SECURITY_CHANGE -> NO_TRUST_IN_NEW_STATE: PASS (100 samples)
- INV-6-9-16 REMOTE_CLAIM -> LOCAL_POLICY_EVALUATION: PASS (200 samples)
- INV-6-9-17 SECURITY_CRITICAL_UNKNOWN -> DENY / QUARANTINE / REQUIRE_REVIEW: PASS (200 samples)
Non-vacuity: 17/17 invariants fail when the code they guard is broken.

## 4. Attack Results
Master campaign 40/40 blocked; Epoch 6 24/24; delegation 12/12; multi-agent 8/8; Epoch 8 red team 560/560 (+22 regression cases); federation 16/16. Unresolved or successful attacks in the final runs: none. **Successful attacks during development (fixed):** see section 13 list.

## 5. Environmental Integrity
Authenticated observations, conflict preservation, Merkle-DAG causal graph, durable crash-safe journal; clean-room verified: True.

## 6. Agentic Sovereignty
Signed attenuating grants, MIN authority, proofs; 16-scenario benchmark false allow 0 / false deny 0; clean-room agrees with primary.

## 7. Continuous Trust
Decay/freshness, verified single-use evidence, debt, drift, change governance; master root replayable; clean-room verified: True.

## 8. Federation
16/16 Byzantine attacks blocked between in-process fabrics; clean-room verified: True.

## 9. Performance (this VPS, single run, in-process)
p50 over unguarded call: decision 154.54 us; evidence 107.81 us; MCP-gate enforcement 46.65 us; primary verification 532.63 us; clean-room verification 503.87 us; federation translate 253.98 us; durable transaction 162.56 us. Proof 1777 B. Network overhead, and CPU/memory beyond the per-op figures, were not measured under load. No pre-Epoch numbers exist for comparison ("before" = unguarded call).

## 10. Recovery
Chaos (40.5s, 1303 iterations): 65 real process kills, 0 double-applied effects; corruption 258/258 detected (p95 601.229 ms, full-chain replay); legit availability 1.0; illegitimate requests allowed 0; recovery p95 64.943 ms. Not a soak; network/clock simulated.

## 11. Independent Verification
Primary (in-module verifiers, pytest) and secondary clean-room ({6: True, 7: True, 8: True, 9: True}) reported separately. Verifier mutation: 23/24 detected, justified equivalent ['MV-24']. Shared: interpreter, `cryptography`, same author.
Module mutation: E6 17/17, E7 40/40, E8 47/48 (equiv. justified ['M8-48']), E9 62/62.

## 12. Public Evidence
`CAIN42_EPOCH6_9_PUBLIC_EVIDENCE_MANIFEST.json`, `CAIN42_EPOCH6_9_CLAIMS_MAP.json` (claim → evidence → verifier → result). **Public sites were NOT updated.**

## 13. Known Limitations / real defects found
- [E6] ObservationTrustLayer accepted ANY non-empty integrity_signature string, never verified signatures, accepted unregistered sources, let a forgery burn a legitimate observation id, and `current_time or time.time()` ignored time 0 → fixed: Ed25519 source authentication, fail-closed, replay id consumed only after authentication, bounded replay cache
- [E6] EffectReconciler.verify_postcondition returned VERIFIED for an empty predicate → fixed: no postcondition => UNVERIFIED
- [E6] CausalProvenanceGraph silently dropped edges to missing predecessors and let a node id be silently overwritten → fixed: gaps reported, history append-only, Merkle-DAG commits, tamper/deletion detection
- [E6] WitnessQuorum counted UNREGISTERED self-signed witnesses (5 Sybils satisfied a 3-of-3 quorum) and counted one witness's duplicate attestations repeatedly → fixed: registered-only, quorum-set membership, one witness one vote, equivocation voids
- [E6] the existing 42-vector Epoch 6 red-team suite is tautological (detectors read flags set by the attack payload; production code is never called) → retained, documented as non-evidence; replaced by cain_epoch6_real_campaign.py
- [E7] effective_authority's resource intersection collapsed to empty when a child listed a broader prefix (found by a test that bypassed link validation) → fixed in primary and clean-room verifier
- [E8] DebtLedger log entries aliased live item dicts, so resolving a debt silently rewrote logged history and broke the hash chain → fixed: log stores a snapshot
- [E8] ContinuousTrust.observe accepted arbitrary strings as 'evidence': 21 red-team attacks climbed from 0.5 to TRUSTED (the doctrine 'EVIDENCE = TRUST WITHOUT VERIFICATION' was violated) → fixed: raising/refreshing trust needs verifier-approved, single-use evidence; no verifier => trust can never rise
- [tooling] mutation harness: a same-size mutation within one second reused a stale .pyc after restore; and a red baseline made every mutation look 'detected' → fixed: no-bytecode + pyc purge; baseline must be green or the harness refuses to score
- Inventory is regex-probe based. Witnesses share a failure domain. No pre-execution simulator. Selective disclosure is not ZK. In-memory registry/journal-per-process. Single signing key per role.

## 14. Unverified Claims
- any claim that these modules protect the LIVE gateway or MCPGate (not wired)
- any availability / uptime / production-readiness claim
- compatibility with real MCP clients/servers, A2A, OAuth/OIDC, SPIFFE, W3C VC
- zero-knowledge properties
- witness failure-domain independence
- behaviour under real network partitions or multi-day soak
- customer-workflow compatibility after deployment

## 15. Residual Risk / unresolved critical dependencies
- Epoch 6-9 modules are standalone libraries: NOT wired into cain/mcp_proxy.py, the gateway (platform-gateway/main.py) or any live execution path, so 'no bypass around the enforcement boundary' is unproven
- nothing was deployed; no live verification; the public sites (cainstudio.online, mcpgate.online) were not changed and their claims were not re-verified (see memory: DNS points to a host this session cannot reach)
- no implementation commit exists: all Epoch 6-9 work is uncommitted working-tree state
- federation was exercised only between in-process Fabric objects with a simulated network: no real second operator, real network, or hardware/TEE attestation
- spec items NOT implemented: zero-knowledge proofs (9.6), pre-execution simulation engine (6.5), A2A/OAuth/OIDC/SPIFFE/W3C-VC interoperability and a real MCP client/server conformance run (9.10), scheduled continuous red team and externally anchored master root (8.9/8.10)
- customer-safe engineering (snapshot, migration, rollback plan, billing/entitlement/API/CLI compatibility) was not exercised because nothing was deployed
- sustained chaos ran for tens of seconds, not a soak

## 16. Customer Impact
No tracked file was modified by this work (the 17 modified tracked files pre-date it). Only two untracked modules import the world-state module I changed. Full-suite comparison vs a clean HEAD checkout: HEAD 328 failed/error, working tree 288; failures present only in the working tree: ['FAILED platform-gateway/tests/test_csp.py::test_no_shipped_page_uses_an_inline_event_handler[insurance.html]', 'FAILED platform-gateway/tests/test_csp.py::test_no_shipped_page_uses_an_inline_event_handler[mcp_explorer.html]', 'FAILED platform-gateway/tests/test_csp.py::test_no_shipped_page_uses_an_inline_event_handler[mcpsecurityscanner.html]', 'FAILED platform-gateway/tests/test_csp.py::test_no_shipped_page_uses_an_inline_event_handler[verifygate.html]', 'FAILED platform-gateway/tests/test_phase1_evolution.py::test_billing_resilience_zero_502', 'FAILED tests/test_cain_phase4.py::TestPhase4CLICommands::test_cli_evidence_export_and_verify_roundtrip', 'FAILED tests/test_cain_sandbox_monetization.py::test_engine3_compliance_api_endpoints']. These are outside Epoch 6-9 code but were not proven unrelated (suites ran concurrently; tree has other sessions' edits). Note: this run's LC_ALL sort warning means the diff is approximate. Nothing was deployed, so no customer path changed.

## 17. Final Certification State
**INCOMPLETE**

---
## Self-critique (answered with evidence)
1. Newly provable: signed-grant authority chains, proof verification, crash-safe journal, tamper-evident evidence, federation claim rules (section 2).
2. Still unprovable: live-path enforcement, real-network federation, ZK, HSM/TEE, real MCP/A2A interop.
3. Trusted assumptions: Python/`cryptography`/SQLite/OS; decision-key and root-key custody; the deployer-supplied evidence verifier; 2-approver key custody; clocks.
4. Centralized: one decision key, one registry, one log signer, one master-root key per fabric.
5. Simulated: network, partner fabric, clocks, evidence verifier set, witnesses, MCP client.
6. Same-implementation verification: ProofVerifier lives with the engine; clean-room verifiers reduce but do not remove correlated-error risk (same author).
7. Ambiguity: a partner's self-consistent lie about its own domain (M-02 residual); sub-threshold slow drift; regex inventory.
8. Escalation: compromise of root/decision keys or registry memory; collusion of 2 approvers.
9. Laundering: via an over-permissive evidence verifier supplied by the deployer; lineage roots must be flagged compromised by someone.
10. Misleading evidence: synthetic FAR/FRR corpus; probe-hit inventory; the old tautological Epoch 6 suite (documented).
11. Federation attack paths: unbounded replay/nonce and dispute-log growth (resource DoS, not tested); push-revocation latency window; operator-configured tenant map poisoning.
12. Complete loss of the primary fabric: NOT TESTED (only remote-partner loss is).
13. Compromised verifier: clean-room ignores primary output (M-28); a compromised clean-room host is not covered.
14. Fabrics disagree: REQUIRE_REVIEW/QUARANTINE, preserved (M-34, disputes tests).
15. Unknown world state: high-risk denied (INV-08); low-risk allowed by design.
16. Model compromised: treated as untrusted (INV-03); it can still act inside its local grants.
17. Memory compromised: INV-02; governed-memory service is not integrated here.
18. Tool compromised: effect divergence/out-of-bounds detected only if the witness is independent of the tool (not achieved).
19. Agent collusion: consensus cannot create authority (INV-05); collusion inside legitimately granted authority is not preventable.
20. Strongest unproven assumption: that no execution path bypasses these libraries in the deployed runtime.