CAIN-42 invariant · E28

E28-I42: a revoked identity presenting again is REVOKED_RESURRECTION

Held · CAIN-42 Evolution 28 -- Portable Machine Agency & Execution Identity

Last reviewed 2026-10-01

held   niche Autonomy, control loops & recovery · family continuity

What this rule means

CAIN-42 must always satisfy: a revoked identity presenting again is REVOKED_RESURRECTION. It is one of 90 invariants checked for CAIN-42 Evolution 28 -- Portable Machine Agency & Execution Identity. 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

({'class': 'REVOKED_RESURRECTION', 'material_changes': [], 'authority_retained': False, 'requires': ['REFUSE'], 'authority': 'NONE'}, {'class': 'REVOKED_RESURRECTION', 'material_changes': [], 'authority_retained': False, 'requires': ['REFUS

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Related rules

• E28-I38: an unchanged agent is SAME_GOVERNED_AGENT and keeps its live authority
• E28-I39: same identity presented with another key is IDENTITY_CLONE
• E28-I40: a signed succession gives CONTROLLED_SUCCESSOR with no retained authority
• E28-I41: a succession signed by the agent itself is not accepted
• E28-I43: an actor claiming an unknown identity is UNKNOWN_ACTOR
• E28-I44: a new key with a parent claim and no registration is UNVERIFIED_FORK
• E28-I45: a quarantine decision quarantines identity and E25 instance
• E28-I83: a self-improvement candidate cannot approve itself

← E28-I41 · all 90 · E28-I43 →