{"log_id":"log.iondra.com/main/record-hash-v1","mca_version":"0.1","hash_alg":"sha-256","signature_alg":"ed25519","key_id":"ed25519:0633ae60bd559ad4","public_key_pem":"-----BEGIN PUBLIC KEY-----\nMCowBQYDK2VwAyEA4Oo2VMrYU84gbU6LBarD4AOhe/RxkeLi83M6OPEaga4=\n-----END PUBLIC KEY-----\n","checkpoint_cadence":{"first_append":true,"max_records":1000,"max_seconds":3600},"empty_windows":"Windows with zero appended events emit no checkpoint (MCA v0.1 conformance — no canonical empty range).","exposure_window":"First append is checkpointed immediately; thereafter a checkpoint is emitted at 1000 records or 3600 seconds, whichever occurs first. Empty windows are skipped.","leaf_input":"record_hash","record_profile":"hash-only","log_generations":[{"log_id":"log.iondra.com/main/record-hash-v1","status":"active","checkpoint_chain":"genesis","leaf_input":"record_hash","checkpoint_format":"record-hash-v1"},{"log_id":"log.iondra.com/main","status":"legacy-frozen","leaf_input":"sha256(evidence_hash + ':' + attestation_id)","checkpoint_format":"legacy-evidence-id"}],"witnesses":[],"links":{"spec":"https://github.com/1omega/mca-spec","verifier":"https://github.com/1omega/mca-verify","verifier_commit":"67942e449e028eef4abf7da64afaacf66ea86d97","record":"/api/mca/records/{record_hash}","checkpoint":"/api/mca/checkpoints/{database_checkpoint_id}","checkpoint_records":"/api/mca/checkpoints/{database_checkpoint_id}/records","inclusion":"/api/mca/checkpoints/{database_checkpoint_id}/inclusion?record_hash={record_hash}"}}