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 0xc205a6cb8101a3cd5d51d318e04e0ca5c000155542167676d8839ddd18d8feaf. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5545b51-dd03-4ca8-b7e0-cbe73462bf1c.json and https://artists.proofprofile.net/proofs/artist/e5545b51-dd03-4ca8-b7e0-cbe73462bf1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A los santitos del día (Fandango de Frasquito)
Obra Tú de la Manera / El Haberte Yo Querido
Que No Había Mujer Buena / Que a Mi Me Enseñó a Querer
The Best Collection. History Of Flamenco Vol. 28: Jose Cepero
Grandes Clásicos del Cante Flamenco, Vol. 18: Fandangueros Con Sello Propio
Great Interpreters of Flamenco - José Cepero, Antonio el de la Carzá, Pepe Palanca [1928 - 1943]
José Cepero, La Época Dorada del Flamenco