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 0x118ea46bf9962b968616e54a754218099defce1d04533dc73dca6c56bf30f4d7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3366959b-77f6-4cb4-862b-4b347421e88c.json and https://artists.proofprofile.net/proofs/artist/3366959b-77f6-4cb4-862b-4b347421e88c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oboe Concerto In A Minor, RV 461: I. Allegro Non Molto
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 0x1b3660c810a17d236cae35545c0c3da4e1f511be1d3dbfa76ea110fed301beb6. 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/HKI199706804.
Oboe Concerto In A Minor, RV 461: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef75ab0a9ad11276f6c027fb0e06779e834aefe978ad538e168a00dc0be32d2. 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/HKI199706805.
Violin Concerto In A Minor, Op. 3, No. 6, Rv 356: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb7825b4d0ba8a9255622374662dd5f442a8ebafcc27d2202ac71a265ff0e20. 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/HKI199706809.
Sinfonia For Strings In D Major, RV 122: I. Allegro
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Oboe Concerto In C Major, RV 447: I. Allegro Non Molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a2602bf06823237928a7c1262c2cc9aab517106a2f6d517dafa1c51b33f2d3. 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/HKI199706813.
Concerto For 2 Violins In A Minor, Op. 3, No. 8, RV Rv 522: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0615290466ce429254019096ad65129f38e7eef80adeb07b3777186f26f64c. 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/HKI199706819.
Concerto For 2 Violins In A Minor, Op. 3, No. 8, RV 522: II. Larghetto E Spiritoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24748df91a4744ce65c030433a72e804d226a4fd8b467c43fe1c956a664e66dc. 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/HKI199706820.
Concerto For Strings In G Major, RV 151, "Alla Rustica": I. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa240f06b9318283350fa85037c9902c6ac25f332efd4fcedbde487d86dc6321. 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/HKI199706822.
Concerto For Strings In G Major, RV 151, "Alla Rustica": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64924b85ee4055a4b40442980f0f2377d6a1e9cb66d7b38d5649ced6d024b4a9. 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/HKI199706824.
Concerto For 2 Mandolins In G Major, RV 532: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0677389dab12b6b2b5dbed04593eb30a6cc60c076d02f71ea6e958983029f2d7. 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/HKI199706825.
Concerto For 2 Mandolins In G Major, RV 532: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e68c651a896ca9e125655c622dcb28b078b4419a833c44c1e48be811ef9c3e. 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/HKI199706826.
Concerto For 2 Mandolins In G Major, RV 532: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083d9605d4c66f2afacca252f234b3d30e0a3f4b2394371c95c13f86f831c505. 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/HKI199706827.
Concerto For Strings In G Major, RV 151, "Alla Rustica": II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa52dfa17e20d1422cd67433c5e6879f1b262e19ede67437f4e9348f353b8e23. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/HKI199706823.
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
Vivaldi: Concerti per fagotto, archi & continuo
Concerto for 2 Oboes in C Major, RV 534: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36ac7e154e95dbbc99c1382a3dd5287865baad25f0a1cc45feb6fa339a4391c. 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/HKI199329005.
Verdi - Respighi - Puccini & Rossini: Opere per Orchestra
Le Quatro Stagioni, L'inverno - Winter, I - Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185bf77be1cb8bfcab99c18e6cd19acdc9e1729c573419704d66b4563fe57fa8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCRW9636910.
Vivaldi: Violin Sonatas, Op. 2 Nos. 7-12
Vivaldi: La stravaganza, Op. 4 Nos. 7-12
Vivaldi: L'estro armonico, Op. 3 Nos. 1-6
Veracini: Overtures and Concertos, Vol. 2
Concerto for Strings in G Minor, RV 157: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416ee433d835ee170715927a4027e5ea648428aa1f646d70fc3a32b5dd18718. 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/HKI199602312.
Serenade Nr. 13 KV 523 "Eine Kleine Nachtmusik": I. Allegro (Mozart)
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Veracini: Overtures and Concertos, Vol. 1
3 Gymnopédies: Gymnopedie No. 1 (arr. for harp)
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Orchestral Suite No. 3 in D Major, BWV 1068: Bach - Overture (Suite) No. 3 in D Major, BWV 1068: II. Air, "Air on a G String"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382242ac8182259c2398d357dab3278520f46cf8576c8bc4bda5aefa7c5f8dd. 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/HKI199911316.
3 Gymnopédies: Gymnopedie No. 3 (orch. C. Debussy)
Orchestre Symphonique et Lyrique de Nancy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4154bdde24e2c1540a28c6d67fba0d46f2dfae6f94e3c358008bfb7262e273. 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/HKI199810806.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104209a03a61a76f6b6438ef5e1767ef523b2d3080f580a91ae37ff4c08e0ca6. 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/HKI198900207.
Piano Sonata No. 8 in C Minor, Op. 13, "Pathetique": II. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a336c4ee52cade43600e2a777968b19a63e8dc3d45d28f922e458be183dc4e7. 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/HKI199214302.
The 4 Seasons: Violin Concerto in E Major, Op. 8, No. 1, RV 269, "La primavera" (Spring): The Four Seasons, Spring: Largo e sempre pianissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49068c36bb86da88cdb6d481c05b1b2aeb613bb696546c275815a6389457aa1. 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/HKI199329502.
The 4 Seasons: Violin Concerto in G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): The Four Seasons, Summer: Adagio
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The 4 Seasons: Violin Concerto in F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): The Four Seasons, Autumn: Adagio molto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674d1183728d4849a9633f2d6b62bc302405ad4db28f3c07a3e1cd08cf28336c. 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/HKI199328217.
The 4 Seasons: Violin Concerto in F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): II. Largo
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Concerto for 2 Mandolins in G Major: Andante
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Violin Concerto in A Major, RV 344, "Dresden Concerto": Dresden Concerto in G Major: Adagio
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Viotti: Violin Concerto No. 23 / Sinfonie Concertanti
Vivaldi: Violin Concertos, Op. 6 Nos. 1-6
Bonporti Edition, Vol. 5 - Chamber Sonatas
Bonporti Edition, Vol. 3 - Concertos A 4, Nos. 1-10
Bonporti Edition, Vol. 2 - Chamber Sonatas
Bonporti Edition, Vol. 1 - Motets for Solo Voice
Vivaldi: Opera II - Sonate 1/6 per violino e basso continuo