CAIN-42 CAIN Studio

CAIN-42 invariant · E31

E31-LAYER-DECISION: DECISION is UNKNOWN when its artifact is missing, never VERIFIED

Held · CAIN-42 Evolution 31 -- Universal Proof-of-Governance Fabric

Last reviewed 2026-10-01

held   niche Policy, law & governance · family enforcement_layer

What this rule means

CAIN-42 must always satisfy: DECISION is UNKNOWN when its artifact is missing, never VERIFIED. It is one of 252 invariants checked for CAIN-42 Evolution 31 -- Universal Proof-of-Governance Fabric. An invariant is a rule the system may never break, whatever an agent or attacker does; the test suite tries to break it across many scenarios and records the result.

Recorded detail

('UNKNOWN', 'VERIFIED')

Verify it in your browser

Your browser downloads the bundle's SHA256SUMS manifest and the file(s) behind this page, hashes them with SHA-256 locally (WebCrypto), and compares. A match shows the record you are reading is the published one; it does not by itself prove who published it (see the signed claims registry and the bundle verifier for that).

Check it yourself

Browse the raw bundle · How to reproduce it · SHA-256 manifest

Scope: An in-process TESTED library; not hosted; not wired into the gateway, MCPGate or the clusters.

Related rules

← E31-AF-nonce · all 252 · E31-LAYER-AUTHORIZATION →

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