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 0x2da37034b4bca36ac1736b9cd06d34b53b4b968d2a18a91e826de4472462cf0e. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a834abe9-4dc1-4360-ab18-3433df183281.json and https://artists.proofprofile.net/proofs/artist/a834abe9-4dc1-4360-ab18-3433df183281.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurrí El Rey: (Macario Leyva/ El Federal De Caminos/ Chito Cano)