thumb|A wall painting in Pompeii, depicting a youth with a nimbus, who some scholars have identified as Hesperus. It dates to the reign of Vespasian (69–79 AD).National Archaeological Museum, Naples 9
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa411734840050c02bc67a3303090b67710c54d3cc333665112b808fef2d1d4df. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5108b520-0c4d-4c77-b650-c5fdb9f74763.json and https://artists.proofprofile.net/proofs/artist/5108b520-0c4d-4c77-b650-c5fdb9f74763.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hesperus: Unicorn (Medieval, Appalachian and World Musics in Fusion)
Hesperus: "I Love Lucette" - French Theatrical Chansons From The 15th Century