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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5d4fa302ae65c9097fc0e3c3ccc1c2ecb68f77c6273d0a839586eda9a5f971. 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/b02043fd-e9ea-46df-8c61-6e60206938f3.json and https://artists.proofprofile.net/proofs/artist/b02043fd-e9ea-46df-8c61-6e60206938f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mercadante, S.: Flute Concertos Nos. 1, 2 and 6
Beethoven, Böhm, Gariboldi, Galli, Doppler: Souvenir de Beethoven
Zani, Piacentino, Torti & Schiatti: Concerti per flauto archi e continuo
Bach, J.S.: Flute Sonatas, Bwv 1032, 1038 / Trio Sonata, Bwv 1039 / Musical Offering (Excerpts)
Mozart, W.A.: Violin Sonatas Nos. 17, 18, 24 and 27 (Arr. for Flute and Piano)
Flute Recital: Trevisani, Raffaele - Donizetti, G. / Sarasate, P. / Boehm, T. / Massenet, J. / Doppler, F. / Borne, F. (The Virtuoso Flute)
Albinoni, T.G.: Flute Concerto, Op. 9, No. 6 / Pergolesi, G.B.: Concerto for Flute and 2 Violins in G Major
Bach, C.P.E.: Flute Concertos in G Major / D Minor / A Major
Flute Concerto in D Minor, Wq. 22, H. 425: I. Allegro
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e2e5c7a0f0922d15a314ad83ab549eaf31eb177b8b0eca0e76e22cc47374e7. 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/USASX0531204.
Mozart: Flute Concertos Nos. 1 and 2 / Concerto for Flute and Harp
Concerto for Flute and Harp in C Major, K. 299: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82bd46bbe95274cd5fe714d11a421b642c09317df07f79f42609f28309e6752. 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/DEA550108201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821fe454e87a807a57be350301e8f483c531c0cdc589e6bd8bbe8e0c5470812a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRV770501000.
Les Quatres Saisons: Concerto En Fa Mineur, RV 297 "L'hiver": II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25bd842269bbc5eaac886ff16ba2b833d71fb86ad188d6867d8c1aa7ff2c97d. 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/FRV770501008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad205c2a0986ca0ececfb983ad42d4646f137d34602fbda15bf6e84f91e109f0. 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/FRV770501003.
Concerto Pour Flûte Et Harpe En Do Majeur, K. 299: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485c7d6d644f8e6dbfb2d84eee6c97474f187e021a6338fba053f481d8a0bc2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:50:53Z), 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/FRV770501011.
Peer Gynt Suite No. 1, Op. 46: I. Le Matin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c928d6eb6153377c1f0549582aa7503a19c96798057689ce617088e8002a26. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRV770501006.
Largo: J.S. Bach, A. Vivaldi, C.P.E. Bach, G. P. Teleman,G.F. Händel, W.A.Mozart (Classical Masterpieces)
Best of Classic (25 Favourite Masterpieces)
Short Romantic Classics Vol. 1 (Classical Masterpieces)
A Midsummer Nights Dream (Classical Masterpieces)