1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4980684ad068b363484664a04c52e2421607d68b8c92f2bfc36601b401a792c4. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b337ffe9-9c0f-4867-b960-c9cbf9f1dc85.json and https://artists.proofprofile.net/proofs/artist/b337ffe9-9c0f-4867-b960-c9cbf9f1dc85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
5 Étoiles ***** (feat. SHAIM, Badnaiy, Rounhaa & Gio)