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 0x24f17cbafbf311482195fb5fa8ad8e600ba0377a9f67c41f265bdad66c474b42. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d9edb71-75a3-46b8-8fe1-6880944395fe.json and https://artists.proofprofile.net/proofs/artist/2d9edb71-75a3-46b8-8fe1-6880944395fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Préludes, Premier Livre: No.8, La fille aux cheveux de lin
Piazzola: Adiós Nonino - Invierno Porteño
Manos que nos ayudan (dedicado al inagotable e invencible Sergio David Ledesma)
Variación sobre el tema de amor de Maxi (Dedicado a Fernanda)
Pequeña música de Colonia del Sacramento
Sports et divertissements 8. Le Yachting
La Vasca (Canción de Cuna para la Princesita Florencia Luz)
Las 3 M (Días de mi Infancia en la Casa de Campo de mis Abuelos)
Balada para la Madre de un Buen Hijo (Dedicado a Daniel Iglesias)
Conversations Between My Darkness and Me
Canción de Cuna para Juan (3 Variaciones)
Manos tocando un dibujo (El arte de Vernon)
La maison blanche qui se montre et la rosée qui se caché derrière l'arbre
Un día de Invierno Porteño (Piano Porteño)
Mas Largo Que El Ciruela (Piano Rioplatense)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ff57a5b09b353831bddba697b0b24be543e5964d5b69991a8ef48821b32d90. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2085912.
Una reflexión en el medio de la tracalada de Buenos Aires
Your Wishes That Were Stronger than Death and War (Are Now My Wishes)
The Lonely Man Theme (from The Incredible Hulk)