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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845bf5e33dedd7d9fc319f93c4620c7d17cdae11d80d64757a9c6444fa938b49. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79f5e98e-01bf-40d2-8207-fe26070a32fe.json and https://artists.proofprofile.net/proofs/artist/79f5e98e-01bf-40d2-8207-fe26070a32fe.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Ornela y los de Traje (Banda Sonora Original de la Serie de Televisión "Ripio, Camionero y Detective")
Policompañeros Motorizados (Banda Sonora Original de la serie TV, Temporada 1)
Space Hamster (Official Soundtrack from the Avix Game)
Policompañeros Motorizados: La Ira de Dimitri (Banda Sonora Original de la Serie TV, Temporada 2)
La Frecuencia Kirlian (Banda Sonora Original de la Serie Netflix)
La Frecuencia Kirlian (Música Original del Trailer de la Serie de Netflix)
Turn Right (Original Avix Game Soundtrack)
Cheaptunes Vol. 1 - Press Start (Chiptune Covers)
La Frecuencia Kirlian (Banda Sonora Original del Episodio 6 de la Serie Web)
Cheaptunes Vol. 2 - Beat'Em Up (Chiptune Covers)
La Frecuencia Kirlian (Banda Sonora Original del Episodio 8: Arcade Arcano)
La Frecuencia Kirlian (Banda Sonora Original del Episodio 7: Los Invasores)
Historia de lo Oculto (Banda Sonora Original de la película)
El Final de la Frecuencia Kirlian (Banda Sonora Original)
El Ascenso y Caída del Chop Chop Show (Banda Sonora Original)
Hey lo let's fi! (A lo-fi tribute to the Ramones)
Wabi-sabi (de "Meu corpo é lar de absurdos")
Dos canciones de (des)amor que nunca pensé que escribiría
Pet Lo Boys : A Lo-Fi Tribute to Pet Shop Boys