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 0x4ecbe51e91f673d75dab903868733c5d4b4df47cefc11e64b4539af4d56ec0a5. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2ef30f6-b629-4cc4-905f-db1d60c89b58.json and https://artists.proofprofile.net/proofs/artist/f2ef30f6-b629-4cc4-905f-db1d60c89b58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Forqueray: Pieces de viole avec la basse continue
Haydn: Divertimenti per il pariton a tre
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 0xc12418fa7dd0cbbb7aba5e5f913451ed06dca171126a5248be8f4131170accd1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES7899300101.
Corelli: Sonate per Viola da Gamba & basso continuo, Op. 5
Sonata in C Major, Op. 5, No. 3 (version for viola da gamba and basso continuo): I. Adagio
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Sonata in C Major, Op. 5, No. 3 (version for viola da gamba and basso continuo): V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44064c5fde2b2f55083f14b62fbe5244679c5261b4a0e8dd9a572b5209ba5a6e. 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/CH1491125005.
Sonata in F Major, Op. 5, No. 4 (version for viola da gamba and basso continuo): V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e3c4a353b875e36bd7a59683fe1bf23c461282db3ecb429ee8cbd4d59cd130. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH1491125029.
Sonata in F Major, Op. 5, No. 10 (version for viola da gamba and basso continuo): V. Giga: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4ae4e585af8493f19e00496b48cb5bfabe6d5a9b1f4e7dad250feedfab0235. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH1491125010.
Sonata in G Minor, Op. 5, No. 7 (version for viola da gamba and basso continuo): I. Preludio: Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cda1f0b99ce14c2dab119f3683063142a676b080b9b198fc48903c65116731. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH1491125021.
Sonata in G Minor, Op. 5, No. 7 (version for viola da gamba and basso continuo): IV. Giga: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe1eb08212c156e5149631a18f090040d2abe442bd7c6abe2d050bed3d6c7bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH1491125024.
F. Couperin: Leçons de ténèbres & Pièces de clavecin (Les indispensables de Diapason)
Seconde Stravaganze: Venetian & Neapolitan Music for Viol Consort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c468605f9269cdda128376179565b1b4b7c1c5e8561bb93e9d1db903b69187a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7891401001.
Gagliarde a 5: Gagliarda prima a 5 detta la Galante
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Recercadas del Trattado de Glosas: Recercada terçera para violone sola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500258ba38069f45a245ba0b588eca17a3b83812e54e764310723ce0f44e19f2. 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/FR50X1956301.
Recercadas del Trattado de Glosas: Recercada primera sobre el canto Ilano "La Spagna"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a21f10eff24797cbfcb11a747420363ada36cba1df8679b5f78a2a05b9a90f. 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/FR50X1956302.
Recercadas del Trattado de Glosas: Recercada terçera sobre el canto Ilano "La Spagna"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2889700755f775dd2ce35701ecab3325265be3cb46749445d3b71af9795a073. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR50X1956304.
Recercadas del Trattado de Glosas: Recercada quarta sobre el canto Ilano "La Spagna"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec804a883beb1dd0a41d73ea9ae379b6a57fc8f436a05b97510908b066d57d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR50X1956306.
Recercadas del Trattado de Glosas: Recercada sesta sobre el canto Ilano "La Spagna"
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Recercadas del Trattado de Glosas: Recercada segunda sobre el madrigal "O felici occhi miei"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102c05d245f2616e6e6b39906cfa1750445408296a39be803baf98080436a3f. 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/FR50X1956311.
Recercadas del Trattado de Glosas: Recercada quarta sobre el madrigal "O felici occhi miei"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d917a937eb3884c7a66890284d96622f9438f50abbb1ed0569b95c5cf4ca1. 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/FR50X1956312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0596911f10edae69e3ff966c6d2fe4caca8da2860a50dd06a52d828cb45c1f07. 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/FR50X1956314.
Recercadas del Trattado de Glosas: Recercada quarta para violone sola
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Recercadas del Trattado de Glosas: Recercada segunda sobre la cancion "Doulce memoire"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfb0ce230aa7d941d28553634e963aaf9ddd5b3faa4a7a33df4217a6de42a4b. 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/FR50X1956317.
Recercadas del Trattado de Glosas: Recercada primera sobre tenore "El passamezzo antiguo"
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Recercadas del Trattado de Glosas: Recercada quarta sobre tenore "La folia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5ad2b985d560bc0ae84d9c6f74bd499a79700366e8081191f8001325b619f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR50X1956326.
Recercadas del Trattado de Glosas: Recercada sesta sobre tenore "La Romanesca"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0763140a487dcefd5bc72bbc4a57d8c6d3e9a83ceb238682bc95780010887f7a. 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/FR50X1956328.
Recercadas del Trattado de Glosas: Recercada otava sobre tenore "La folia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdea346b04682508cb5a246dedf3cf7c3562d59f61f44df99b5aa39f52dc986. 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/FR50X1956330.
Diferencias sobre "El Canto del Caballero"
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Barrière: Sonates pour le violoncelle avec la basse continue, Vol. 2
Sonates pour le violoncelle avec la basse continue, livre II, sonate No. 2: I. Adagio
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Sonates pour le violoncelle avec la basse continue, livre II, sonate No. 2: III. Largo
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Sonates pour le violoncelle avec la basse continue, livre I, sonate No. 5: II. Allegro
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Sonates pour le pardessus de viole avec la basse continue, livre V, sonate No. 4: IV. Aria
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Sonates pour le violoncelle avec la basse continue, livre I, sonate No. 3: V. Altro
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Sonates pour le violoncelle avec la basse continue, livre III, sonate No. 6: II. Allegro
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Sonates pour le violoncelle avec la basse continue, livre III, sonate No. 6: III. Largo
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Sonates pour le violoncelle avec la basse continue, livre III, sonate No. 6: IV. Aria gratioso
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Sonates pour le violoncelle avec la basse continue, livre IV, sonate No. 6: I. Allegro
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Sonates pour le violoncelle avec la basse continue, livre IV, sonate No. 6: II. Largo
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Sonates pour le pardessus de viole avec la basse continue, livre V, sonate No. 6: I. Largo
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Sonates pour le pardessus de viole avec la basse continue, livre V, sonate No. 6: II. Allegro
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Geminiani & The Celtic Earth: Give Me Your Hand
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Dieupart: 6 Suites de clavessin pour flûte à bec
Hume: "Harke, Harke!" Lyra Violls Humors & Delights
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba01390428e1cc5449e8327a43c33f2a88d68bd6dc48edb8de025e5c28b3c5. 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/FR50X1419702.
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Virtuosity and Grace. Sonatas for Viola da Gamba
Marcello: Estro Poetico-Armonico (Salmi 14, 21, 27, 38 - Sonata a tré, viola di gamba, violoncello e basso continuo)
Sonata for Viola da Gamba and Continuo in D Major, Wq. 137, H. 559: II. Allegro di molto
Marais, M.: Pieces De Viole - Suites in A Minor / G Major / D Minor
Sonate per Viola da Gamba & basso continuo op. 5: Sonata no 3 - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290b4e1ecdf602a152c95ca16a17863c819228c9393742a7e0a992f73ce19b3b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH1491125001.
Sonate per Viola da Gamba & basso continuo op. 5: Sonata no 3 - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44064c5fde2b2f55083f14b62fbe5244679c5261b4a0e8dd9a572b5209ba5a6e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH1491125005.