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 0x17aefd4a785a04725ec5d44abc1efa305ee5740504d8b6dc5e5a81d02862dbeb. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41b94510-a735-47fc-a337-b55dcce21793.json and https://artists.proofprofile.net/proofs/artist/41b94510-a735-47fc-a337-b55dcce21793.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Dolce Attesa, Pianoforte & Gravidanza: Ninna Nanna di Pianoforte per Mamma e Neonato, Musica Rilassante durante la Gravidanza, Pianoforte Relax & Suoni della Natura per il Travaglio e il Parto
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xa9a645edff7bd307be9c30769badf1249cb9ddbe76bf9a65dbf7d76aa0e1e7bd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO101672402 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941454f9540bc59bcc2c6e03b799a8230cffa8c9a57b2ffa98e6a044c1345c87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO101672403 — a six-check JSON result.
Momentos Inesquecíveis: Música Romântica Instrumental, Amor Eterno
Estudo e Concentração: Música Instrumental Silenciosa para Estudar
Música para Descontrair: Música Relaxante para Meditação, Sons da Natureza, Ondas Delta, Música de Piano
Som de Relaxamento: Piano Suave para Relaxar, Meditar, Estudar e Dormir Bem
Autocontrole Emocional: Canções de Piano que Ajudam a Relaxar a Mente e o Coração
Peaceful Sleep: Powerful Deep Sleep Music, Vibes for Serenity and Stress Relief
New Age Piano Essentials: The Most Beautiful and Relaxing Piano Music Collection
Epic Piano Solo: Japanese Pop Piano Emotional Music
Calm Piano to Sleep: Some Soft Piano Music & Beautiful Songs for Sleeping
Romantic Piano for Reading: Nostalgic Calm Piano to Read Love Stories
Weeping Hour: Compilation of Emotional Piano Songs to Help You Cry When You Are Sad
Rhythmic Moves: The Ultimate Ballet & Dance Class Album
Piano Spa Dreams - Relaxing Melodies for Spa Indulgence and Home Serenity
Evening Piano Melodies - Laid-back Live Bar Tunes for a Relaxing Night, Romantic Atmosphere