CAIN-42 invariant · E38

evidence_basis: every 'evidence basis' invariant in this bundle (133 of 133 held)

Held · CAIN-42 Evolution 38 -- Portable Proof-Carrying Machine Agency

Last reviewed 2026-10-01

held   niche Evidence, receipts & proofs · family evidence_basis

What this rule means

CAIN-42 must always satisfy: every 'evidence basis' invariant in this bundle (133 of 133 held). It is one of 24 invariants checked for CAIN-42 Evolution 38 -- Portable Proof-Carrying Machine Agency. 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

{
 "held": 133,
 "total": 133
}

Products this protects

• CAIN Agent Passport — A signed passport that says who an agent is and what it may do.
• CAIN Conformance — Conformance testing for any system that claims to govern agents.
• CAIN Enterprise Verification — Independent checking of an enterprise's whole agent estate.
• CAIN Federation — Separate CAIN deployments that trust each other's decisions.
• CAIN Governance Audit — Audit an organisation's agent governance end to end.
• CAIN Governance Certificates — Signed certificates that an agent passed defined checks.
• CAIN Governance Evidence Cloud — Long-term storage for signed governance evidence.
• CAIN Governance Gateway — A gateway that applies governance to any agent traffic.
• CAIN Governance Receipts — A receipt for every governed action.
• CAIN Governance SDK — Libraries for building governance into your own products.
• CAIN Proof API — An API to fetch and check proofs.
• CAIN Trust Network — A network of organisations that trust each other's agents.
• CAIN Verify — One-click verification of any CAIN evidence.

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

Related rules

• action_proof: every 'action proof' invariant in this bundle (26 of 26 held)
• certificate: every 'certificate' invariant in this bundle (6 of 6 held)
• proof_confusion: every 'proof confusion' invariant in this bundle (24 of 24 held)
• receipt: every 'receipt' invariant in this bundle (10 of 10 held)
• signed_object: every 'signed object' invariant in this bundle (136 of 136 held)
• transparency: every 'transparency' invariant in this bundle (30 of 30 held)

← dependency · all 24 · federation →