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 0xf3576e43e1759a2209aca0e1870ba8c33405b3b1cedab1fd6a8841c5e92bc5bb. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e242b317-c344-4280-bdb9-bfbd61f380c3.json and https://artists.proofprofile.net/proofs/artist/e242b317-c344-4280-bdb9-bfbd61f380c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stravinsky: Petruska, 5 Easy Pieces - Scriabin: Piano Concerto, Op. 20
Piano Concerto No. 3 in D Minor, Op. 30, III: Finale: Alla breve
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 0xe0e0d791244ced562fa10d1a71e95f23e89e621c5375fa67d375a520f379558e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSJ10804255.
Suite for String Orchestra & Basso Continuo in D minor "Old Dance": Sarabande
Chamber Orchestra of the Moscow Conservatory
Most Relaxing Pachelbel Canon and Baroque Favorites in the Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfc9844cbe18ef9449d695664355f7d880cb76308c90a3556d9b21685a7c727. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSJ10900008.