This document defines COE-2, an optional profile of the Judgment Event Protocol (JEP) [JEP] for binding shared observation records and shared-state claims across heterogeneous agents, sensors, world models, simulators, and human-operated systems. COE-2 defines one critical JEP record-binding extension, two minimal digest-addressed record types, evidence-reference semantics, and independent COE validation checks. JEP remains authoritative for event verbs, Event Identity, Event Hash, signatures, references, extension processing, validation modes, and acceptance semantics. COE-2 provides verifiable shared-observation infrastructure. It does not determine objective world truth, factual causality, consensus, authorization, legal effect, fairness, trust weights, or regulatory compliance. A valid COE result establishes only the cryptographic and structural properties actually checked under the selected profiles.