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 0x1f320a9a3595e6a2cd8c45bb6d0fb9cc46c1a45562b5f32d8c381f32b44a9885. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea2b0cfe-c06d-4f25-8005-a4d8a611fbcf.json and https://artists.proofprofile.net/proofs/artist/ea2b0cfe-c06d-4f25-8005-a4d8a611fbcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart : Symphonie Concertante K.297b pour hautbois, clarinette, basson, cor & orchestre - Concerto pour clarinette & orchestre K.622 - Sinfonia Concertante K. 297b for oboe, clarinet, bassoo
Philippe Hersant: Musique à un, deux ou trois
Rossini : Quatuors pour ensemble à vents
Geneva Music Competition: 75 Years of Musical Discoveries (Live Recording)
Mozart: Concerto for Flute & Harp - Beethoven, Vivaldi, Bach, Telemann
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 1
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 0x6fa25c528c2fd9be571b35cd39bfca5c672763f93573abbeccfe6e493dece181. 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/GBAYC2402704.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f591777935637daf6fd0382d64c66362121a11cdc2971b38b7f3022980b2b3d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402705.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916e70f3c70262593cc33be53b79c5e74366f59a0d83782a70db3163dce72515. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402706.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd022a064685716dda6ecbb36a921f112908ceefe2985d2f113c2cd49deaeca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402707.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb5f400b56026591094ab6c6277c9b5f4b2a98272336e1ebc1299242fcc6dd6. 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/GBAYC2402708.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e328cc41d423e557a78637406ea2581d87d770830500ac3ab1a51f7c2d72a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402709.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbbdb83d2c5819f56f93a732015b3d9b9eed838bf9289009673b9ffe13008af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402710.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2412a259ce75b0fc592fec1cfc54d2a767c85d45f571a2d5b9fde975c93f70d6. 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/GBAYC2402711.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a664cf650ad556372c812f66cecd49dd1487d9065ef3aa34402400b45e4c9ba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402712.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849329fa258bd58c86eeaded1bec3ca0537411133a372fca5d777725a59873f6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402713.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro, Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79341e838f43fc82a1e4d8ae237cc8eae195388fce51100bbb58c00ec7c8e1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402714.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b7ecd6bd33c7194c51033c4552b870da063a585e6c964b235643d38b21c210. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402715.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ebad89a8c2a211e72cf47ddbc874762d97c5e3b47f92ab663b594b89369f2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402716.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6703249039079221895e26423b29ae6c73b5dbf99686913985a29f7ec159c2c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402717.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2ad3f90596504f0fb6f11fe6b10cd2e6bd25e00610a36ee126bd311ea6625. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402718.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4ff72d2f97be20f298d529c9864624825f4eced4dc8ab55de9c742541d3a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402719.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed99c2f26041c06e03183263f6cf9b9f582676292c6ccd9dc37814b49a19633. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402720.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc698d76aaa9bd4b2ee1bb22792107ad9b820305105487ca1d261eaff5db74285. 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/GBAYC2402721.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6ff530c6ba41526e5f901ed801096ba7bb247c12a7c917f7b5505b35a538c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402722.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667f730e7378d32cc14d8744d572d41a44fda8f26f5d6a01f169e9b8d4c65669. 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/GBAYC2402723.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino, Pt. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a875fd3d0c3712f1306424a08aac15d67c45a8073d46ae0f0a363e28e06e7b4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402724.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9863737127395a8992b1d59a50d8a6db7eced2de2b945e36a97171f66be6616d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402725.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7c01942ac64af0903becdc4164e06fc91a4e7e8ac9918ea321f90dd19d3ba0. 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/GBAYC2402726.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fad3bc6025d42dd6c5cec75e4dfd65955dce011477580dd525fab21aa6f77c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402727.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6914980a5fd3a7a01702adf5c18b90b76cc0d8c9db667114eb37993b4ed87384. 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/GBAYC2402728.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f32cb8c1d80a57679a67a4b36086d344fdd913268cb4980ee66bb9a28616c10. 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/GBAYC2402729.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5171051fe28ae28ca3648d8169841211fd3c8d0866a9f45c1e44b154b8947803. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402730.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281e512daf912e82771ab0107006d714ff9657c5e206b631c4086a00079413a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC2402731.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687f408924f4a6eff12f4ffd5b7ed873d88449a8d2ba84cbec2a25aa37996a04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2402732.
Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondeau. Allegro, Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17caf94c6b6fcc6b9ee3f68579a2158d5928f3c2b5f5a7123e7135b85ae5cd9b. 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/GBAYC2402733.
Telemann: Flute Concerto in G Major, TWV 51:G2: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7471d42131cf284ad32f0af8603a27f26e925e78a66a23e7c0b1522cf1786c51. 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/GBAYC0203041.
Telemann: Flute Concerto in G Major, TWV 51:G2: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a9d0c04e688155aa6802c57a2ed279715a4fde8efa1bbc187c3b3296e57b3. 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/GBAYC0203043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361c274d95bbcc67bd0d5e354aaf63d4fc51cd7baa40a54898f7728c8c0f7c70. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2100509.
Haydn: "London" Trios Nos. 1-4 & Duets for 2 Flutes
Mozart: Concertos pour hautbois, basson et clarinette
Bréval & Devienne: Symphonies Concertantes
Jacque-Dupont: Œuvres pour piano – Octuor