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 0x8e5a44b67f9e8bd84869329d1411bb50e0a5b3b250629c4c6e35e78d12e2e0f9. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4aa79db2-4b25-4b91-9da6-572ae5a6a122.json and https://artists.proofprofile.net/proofs/artist/4aa79db2-4b25-4b91-9da6-572ae5a6a122.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tchaikovsky: Nutcracker - March (Piano Version)
Gaspard de la nuit in C♯ major, I. Ondine
Rachmaninoff: Prelude in G Major, Op. 32 No. 5
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 0x823da430fa996788ecd180cfec6c6aad477f600e4ff8cf954940369503c1a829. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:55:38Z), 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/GBSMU0061806.
Hungarian Rhapsody No. 2 in C-sharp minor, S.244/2
Etude de Concert in Ab Major, Op. 1 No. 2
Chopin: Scherzo No. 1 in B minor, Op. 20
Dance Of The Sugar Plum Fairy (Piano Version)
Carlos Gardel - Por Una Cabeza (Piano Version)
Avatar 2: The Way of Water - Nothing Is Lost (Piano Version)
Frédéric Chopin: Andante Spianato et Grande Polonaise Brilliante, Op. 22