# Credential Interoperability
**Domain:** Trust Infrastructure / Certification / Identity
**Doc Type:** Concept Node
**Maturity:** Developed
**Concept Hub:** [[wiki/War With Empire|War With Empire]]
## Definition
**Credential interoperability is the portable validity of an institution's attestation across organizational or jurisdictional boundaries.** It asks when one system will recognize another system's authority to certify a proposition about a person, product, process, model, or organization.
## Scope
Professional qualifications, product conformity assessments, identity credentials, and AI safety attestations belong to different legal regimes. They share a higher-order structure without becoming interchangeable objects: each depends on rules governing whose proof another system will accept.
## War With Empire Context
[[articles/war with empire/The True Enemy of Both China and the United States|The True Enemy of Both China and the United States]] uses credential interoperability to compare recognition across human qualifications and machine certification while preserving their legal differences. The concept exposes recognition as a governance layer above the underlying measurement.
## Key Insight
**A credential becomes power when its issuer can make a proposition portable across boundaries.**
## See Also
[[wiki/Certification State|Certification State]], [[wiki/Legibility for Participation|Legibility for Participation]], [[wiki/Delegated Verification|Delegated Verification]], [[wiki/Exit-Capable Interoperability|Exit-Capable Interoperability]]