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 0x9fbdedcb4b5f8d201549e7f9083defe168ab9e8f5f3a8b05ab14d0fc1993c478. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bef6d272-d19d-4c3f-a6ba-e8384f609fbe.json and https://artists.proofprofile.net/proofs/artist/bef6d272-d19d-4c3f-a6ba-e8384f609fbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Danzas fantásticas, Op. 22: No. 3, Orgía
Suite Española No. 1, Op. 47: No. 7, Castilla
Suite Española No. 1, Op. 47: No. 4, Cádiz
La Habana Era una Fiesta (Grabaciones de la Radio Cubana)