CAIN-42 CAIN Studio

Evidence library · niche

Evidence, receipts & proofs

Signed records that prove what happened, checkable by anyone. 928 tested invariants.

Last reviewed 2026-10-01

928 of 928 held

Where this niche's rules come from

Test families in this niche

domain (179) · packet (146) · receipt (68) · envelope (52) · certificate (42) · moat (41) · supply_chain (38) · envelope_binding (24) · proof (21) · event_kind (16) · proof_carrying_action (16) · attestation (14) · proof_graph (14) · manifest (14) · status (13) · proof_state (12) · action_binding (12) · crypto (12) · evidence_class (10) · failure_class (9) · failure_to_proof (8) · lineage (7) · primitive (7) · enforcement_proof (6) · log (4) · integrity (3) · research (3) · registration (3) · cross-domain (3) · gap_detector (3) · ip (3) · signed_object (3) · state_machine (2) · time (2) · soc (2) · swarm (2) · graph (2) · risk (1) · hardware (1) · federation (1) · translation (1) · reassessment (1) · failure_to_test (1) · telemetry (1) · consistency (1) · scientist (1) · research_to_implementation (1) · environment_query (1) · profile (1) · r2e (1) · radar (1) · agency_graph (1) · event_log (1) · fingerprint (1) · action_proof (1) · evidence_basis (1) · proof_confusion (1) · transparency (1) · factory_proof (1) · f2t (1)

Where these come from

Rules 901–928 of 928

IDRuleBundleResult
E42-EVIDCLASS-CLAIMevidence class CLAIM is never mergedE42held
E42-PROOFKIND-identityproof kind identity existsE42held
E42-PROOFKIND-authorizationproof kind authorization existsE42held
E42-PROOFKIND-policyproof kind policy existsE42held
E42-PROOFKIND-capabilityproof kind capability existsE42held
E42-PROOFKIND-executionproof kind execution existsE42held
E42-PROOFKIND-outcomeproof kind outcome existsE42held
E42-PROOFKIND-provenanceproof kind provenance existsE42held
E42-PROOFKIND-conformanceproof kind conformance existsE42held
E42-PROOFKIND-revocationproof kind revocation existsE42held
E42-PROOFKIND-coverageproof kind coverage existsE42held
E42-PROOFKIND-evidence_integrityproof kind evidence_integrity existsE42held
E42-PROOFKIND-recoveryproof kind recovery existsE42held
E42-PROOFKIND-evolutionproof kind evolution existsE42held
E42-GRAPH-evidenceunified graph node kind evidence existsE42held
E42-GRAPH-supply_chainunified graph node kind supply_chain existsE42held
E42-RECEIPTFIELD-whoa canonical receipt requires whoE42held
E42-RECEIPTFIELD-whata canonical receipt requires whatE42held
E42-RECEIPTFIELD-whya canonical receipt requires whyE42held
E42-RECEIPTFIELD-policya canonical receipt requires policyE42held
E42-RECEIPTFIELD-authoritya canonical receipt requires authorityE42held
E42-RECEIPTFIELD-capabilitya canonical receipt requires capabilityE42held
E42-RECEIPTFIELD-environmenta canonical receipt requires environmentE42held
E42-RECEIPTFIELD-ata canonical receipt requires atE42held
E42-RECEIPTFIELD-versiona canonical receipt requires versionE42held
E42-RECEIPTFIELD-riska canonical receipt requires riskE42held
E42-RECEIPTFIELD-evidencea canonical receipt requires evidenceE42held
E42-RECEIPTFIELD-resulta canonical receipt requires resultE42held

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Other niches

Consensus & distributed systems · Attacks, threats & containment · Identity, authority & delegation · Memory, data & privacy · Prediction, world models & simulation · Transactions, markets & economics · Tools, MCP, protocols & adapters · Autonomy, control loops & recovery · Policy, law & governance · Trust & reputation · Supply chain, registry & lifecycle · Benchmarks, coverage & performance · Core guarantees

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