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 0xedb8b686d0e243f86ceec57c6fff9d7a56ef67c0652ad1c8536a66001c017738. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0904f0ea-9d11-4560-9788-add5870b5db9.json and https://artists.proofprofile.net/proofs/artist/0904f0ea-9d11-4560-9788-add5870b5db9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
C.P.E. Bach, J.C. Bach & Benda: Flute Concertos
Von Weber: Clarinet Concertos - Mozart: Rondo for Flute
Classic for You: Bach: Sonaten für Flöte und Cembalo
Sonate in E-Flat Major BWV 1031: I. Allegro moderato
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 0x00bb65dc87181dc5a92227ccad950e66be0fa5ef3410002052ac2396d4d9e71e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA540300647.
Sonate in E-Flat Major BWV 1031: II. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ede85a12e5bba3f64da83ddeb8cd931e37ac1ee5e39ff3d35a04345dd4a86ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA540300648.
Sonate in E-Flat Major BWV 1031: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc967937084e874b43ceb09d6e26f3aedbe1dd9f00b2ec7943f690e378e89fbe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA540300649.
Sonate in E Minor, BWV 1035: I. Adagio ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3069958245a10602b09ad151ea4aec534cba433cfed3adcee65f7cf08b504ba7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA540300656.
Sonate in E Minor, BWV 1035: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3324e189ca6334ddadf17d99985a9973736bbd6a48cfe766c90959fa0a33d214. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEA540300657.
Sonate in E Minor, BWV 1035: III. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a83bf38c31488b4b15df6f1af4b9d2914242649c2258c03eaeec3baa0cbb92. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEA540300658.
Sonate in E Minor, BWV 1035: IV. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55c2e66639328558eb374d6c6320c4a08ebafdc2169d1cd18fa472e98311dee. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEA540300659.
Concierto para flauta y arpa y orquesta en Do Mayor - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf737957094cd60ce3608f865432c98907c107b9aca3110680920cbe91a3cd7d. 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/ESA031002801.
Concierto para flauta y arpa y orquesta en Do Mayor - Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39bed430212f8b78b19db55ee87bc79d4a0df829f2300587248c3c6fbcde081. 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/ESA031002802.
Concierto para flauta y arpa y orquesta en Do Mayor - Rondó. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b29c427e81a37660fe2d936c1effdddbe24073e4aae4154215b8f5c4967b598. 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/ESA031002803.
Concierto para clarinete y orquesta en La Mayor - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d24ef66dafed9075b0ceab254967e3b7f8440f9937bafc7db09ce881499d991. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ESA031002804.
Concierto para clarinete y orquesta en La Mayor - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146d51c78606d78b176845959f15fa11c77b0ed2abbb37b69e77f49b0cae57f. 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/ESA031002805.
Concierto para clarinete y orquesta en La Mayor - Rondó. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428488da600bcb8f7ad23a9de1875cbd399e27696ef674a7f7390134e31109f9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ESA031002806.
Mozart: Andante for Flute and Orchestra in C Major, K. 315 (Digitally Remastered)
J.S. Bach: Flute Sonata in E Minor, BWV 1034 (Digitally Remastered)
J.S. Bach: Flute Sonata in E Major, BWV 1035 (Digitally Remastered)
J.C. Bach: Concerto for Flute & String Orchestra with 2 Horns (optional) in D Major, CW C79 (T. 286/7) [Digitally Remastered]
C.P.E. Bach: Concerto for Flute, Strings & Basso Continuo in D Minor, Wq 22 (Digitally Remastered)
J.S. Bach: Flute Sonata in E-Flat Major, BWV 1031 (Digitally Remastered)
J.S. Bach: Flute Sonata in B Minor, BWV 1030 (Digitally Remastered)