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 0x8af2b4e545fde1e1689d65c9e81b88d7ba7aa3ca0f397576764e15d9366104f4. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e15bad7a-5e6d-4b2a-afa6-3c9a24b1880d.json and https://artists.proofprofile.net/proofs/artist/e15bad7a-5e6d-4b2a-afa6-3c9a24b1880d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nothing Without You (Original Motion Picture Soundtack)
Dehesa, El Bosque del Lince Ibérico (Banda Sonora Original)
Cristina García Rodero: La Mirada Oculta (Banda Sonora Original)
Doñana: Donde el Agua Es Sagrada (Original Motion Picture Soundtrack)