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 0x1ac522af83ef00faeaff153f0dec4b6e4e309015e6cf65c0613fec3b26f24d1d. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdc7a12c-07e3-4b4b-8608-0615129f24dc.json and https://artists.proofprofile.net/proofs/artist/fdc7a12c-07e3-4b4b-8608-0615129f24dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nana de Sevilla (Colección de Canciones Populares Antiguas)
El Amor Brujo - Introduccion Con las Gitanas - Cancion del Amor dolido 1933
El Amor Brujo - Campanas del amanecer 1933
El Amor Brujo - Canción de la Danza del Fuego 1933
El café de Chinitas - Federíco García Lorca al piano
Los Números Uno del Pop Español 1940 (Remastered)