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 0xddd47f262de71db4e2a6f2080c93ecf989526f82674cdf04adc6466d129a1ab9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/582cb62e-df1c-41ab-bf9e-46f81cd1e021.json and https://artists.proofprofile.net/proofs/artist/582cb62e-df1c-41ab-bf9e-46f81cd1e021.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Horizontes (Music for Saxophone and Piano)
Tanada: Mysterious Morning III (For Soprano Saxophone)
Blue Balafon for soprano saxophone and electronics
Telemann & Bach: Fantasias for saxophone
Clouds - For Alto Saxophone and Electronics
Comesaña & Donjon: Any Blackbird & Elégie
Pavane, Op. 50 - Arr. for Alto Saxophone and Guitar
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 0xb0a1ac5d7caa349e8cc4318dab928f9000559361babc9d739f041195602bca5a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA011811193.
Tango para un Loco II: 12 (Des) Arreglos
Telemann: Twelve Fantasias for Saxophone Solo (Saxophone Arr.)
Sonata 19 - El Calor de lo Humano - For Alto Saxophone and Piano (Versión Remasterizada)