CAIN-42 invariant · E26

I-FED-write: federated write

Held · CAIN-42 Evolution 26 -- Universal Machine Agency Trust Fabric

Last reviewed 2026-10-01

held niche Core guarantees · family federation

What this rule means

CAIN-42 must always satisfy: federated write. It is one of 532 invariants checked for CAIN-42 Evolution 26 -- Universal Machine Agency Trust 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

['CAPABILITY_NOT_FEDERATED']

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: {"limitation": "In-process trust layer over the E25 fabric. No third-party agent, MCP server or A2A peer has consumed a CAIN trust object.", "status": "SCOPE"}

Related rules

I-HW-TPM-unknown: TPM without verifier is UNKNOWN
I-HW-TEE-unknown: TEE without verifier is UNKNOWN
I-HW-CONFIDENTIAL_VM-unknown: CONFIDENTIAL_VM without verifier is UNKNOWN
I-HW-PLATFORM-unknown: PLATFORM without verifier is UNKNOWN
I-HW-GPU-unknown: GPU without verifier is UNKNOWN
I-HW-DPU-unknown: DPU without verifier is UNKNOWN
I-HW-SMARTNIC-unknown: SMARTNIC without verifier is UNKNOWN
I-HW-CLOUD_PROVIDER-unknown: CLOUD_PROVIDER without verifier is UNKNOWN

← I-FED-read · all 532 · I-FED-attest →

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