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 0x6358e99cb732bccaf23ea195d269f04eaf76016591a3bb551e08148e3af864a1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/618573fb-385f-4b8d-b470-102d32ba6a4d.json and https://artists.proofprofile.net/proofs/artist/618573fb-385f-4b8d-b470-102d32ba6a4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
EDIGSA 1961-1983 Nova Cançó. Inicis I Evolució (Vol. 1)
Himnes I Cançons de Lluita (Reivindicatives)
A L'Hivern, el Millor Amic És un Bon Abric (Vol. 2)