1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2035e304676840608b794c54de8b12078f7e5d788e41f2371e2a12515f1ccbd7. 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/43d65eb8-57f6-4151-a0db-0a45cf4fd4d3.json and https://artists.proofprofile.net/proofs/artist/43d65eb8-57f6-4151-a0db-0a45cf4fd4d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prelude and Fugue in C Major, BWV 846 - The Well-Tempered Clavier, Book 1
Prelude and Fugue in C Minor, BWV 847 - The Well-Tempered Clavier, Book 1
Prelude and Fugue in D Major, BWV 850 - The Well-Tempered Clavier, Book 1
The Godfather (The Best Piano Movie Themes)
The Godfather - The Best Piano Movie Themes
Nuovo Cinema Paradiso (The Best Piano Movie Themes)
Nuovo Cinema Paradiso - The Best Piano Movie Themes
Piano For The Statue Of Liberty (Piano Version)
The Last of the Mohicans - Piano Version
The Last of the Mohicans (Piano Version)
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 → block OTSBitcoinBlock must exist at that height 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 0xc2fac98b66ba97bd44e2546fdfe04e81565297c0bf7846739f2cc3e96c131049. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0H2387042.