Decimus Junius Juvenalis (), known in English as Juvenal ( ; AD 55–128), was a Roman poet. He is the author of the Satires, a collection of satirical poems. The details of Juvenal's life are unclear,
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ca642a033d1f4055948acfb1f49c63440dea8e8ffd79e085f695b83b29892a. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef03fc62-15a4-4d21-bf7c-970db2b3a09f.json and https://artists.proofprofile.net/proofs/artist/ef03fc62-15a4-4d21-bf7c-970db2b3a09f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.