{"id":"gcs-durability-contingent-on-cmek-cross-service-blast-radius","text":"CMEK key lifecycle is the single governance surface for data persistence across GCP: a key that protects GCS objects (conditionally voiding eleven-nines durability on destruction), Spanner databases (auto-deleted after 30 days of key unavailability), and other CMEK-integrated services creates cross-service blast radius from a single key management decision — rotation is safe but destruction or revocation cascades across all dependent services simultaneously.","truth_value":"OUT","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{"_retracted":true},"explanation":{"steps":[{"node":"gcs-durability-contingent-on-cmek-cross-service-blast-radius","truth_value":"OUT","reason":"retracted premise"}]}}