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 0xe8cab28f3a6e3bb3c85e73803c0cc1098a9dd3525a5616317cf2427ce81bb9dd. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1997d7be-827c-4186-9a09-b8419e5e21a1.json and https://artists.proofprofile.net/proofs/artist/1997d7be-827c-4186-9a09-b8419e5e21a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Maja De Goya - Il suono Torres di Bellafontana
The Immigrant (Main Theme from "The Godfather")
Là dove 'l sì suona: Italian Music for Classical Guitar