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 0x9fcf25802b405a4f3c7fca5937c391cf89c5cdb23b15a2ef637a2d2e62bddc8a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c71e783-1336-49ac-8199-b1fb86978838.json and https://artists.proofprofile.net/proofs/artist/8c71e783-1336-49ac-8199-b1fb86978838.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd544a3aae75e9fee75f13d56dc4f22d954190d3b26adfc1a386b27650e72ad2e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USTC00964769.
Rossini, Puccini & Tchaikovsky Presents the Classical Stage
Piano Concerto No. 21 in C major, K. 467, 2nd Movt, Elvira Madigan (Piano & Orchestra) [Instrumental]
Double Take, Vol. 1 (Classical Masterpieces for Piano & Orchestra) Michael Charles Clark
Classical Reflections (Relaxing Piano Classics, Vol. 1) [Romantic Piano with the Soothing Sounds of Nature]
Claire de Lune (from Ocean's Eleven Soundtrack) [Piano & Orchestra Special Version]
The Blue Danube (from 2001: A Space Odyssey) arr. for Piano
Pirates of the Caribbean EPIC Piano Fantasy (Motion Picture Soundtrack Medley)