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 0x8e88983d8c5d7c2470645cb20ba6b8668af3a1c12afc64086cf7d54478c664c2. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2acd5fd-768a-405e-b327-19438e6658b1.json and https://artists.proofprofile.net/proofs/artist/e2acd5fd-768a-405e-b327-19438e6658b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Océano Relajante Para Perros: Ambiente Suave Marino
Patitas Al Océano: Obertura De Calma Para Perros
Olas Ladrantes: Juego Oceánico Para Perros
Felicidad De Ladridos: Paisaje Sonoro Ambiental Relajado Para Perros
Armonía De Perros: Música Binaural Para Momentos De Paz
Música Ambiental: Día Fuera Con El Perro
Música Para Jugar Con Cachorros: Melodías Enérgicas Para Perros
Ladridos Melódicos: Música Para Perros Alegres
Melodías De Meneo De Cola: Música Relajante Para Perros
Campanas Caninas: Música Tranquila Para Perros
Sonidos Caninos Suaves: Música Para Perros Durmiendo