CAIN-42 invariant · E26

I-TO-field-runtime: runtime changes identity

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

Last reviewed 2026-10-01

held niche Trust & reputation · family trust_object

What this rule means

CAIN-42 must always satisfy: runtime changes identity. 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.

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Check it yourself

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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-TRUST-control-low-identity: low/identity control
I-TRUST-below-low-identity: low/identity below floor fails
I-TRUST-unknown-low-identity: low/identity unknown fails
I-TRUST-control-low-attestation: low/attestation control
I-TRUST-inert-low-attestation: low/attestation inert
I-TRUST-unknown-inert-low-attestation: low/attestation unknown inert
I-TRUST-control-low-provenance: low/provenance control
I-TRUST-inert-low-provenance: low/provenance inert

← I-TO-field-agent_instance · all 532 · I-TO-field-model →

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