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 0x706ba42b02f65951bce37677837681db46a74398e9536de165fb8d40cfea8f3c. 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/ccd1bbf8-e397-445f-956b-721b7b60f84d.json and https://artists.proofprofile.net/proofs/artist/ccd1bbf8-e397-445f-956b-721b7b60f84d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb4587380f17950b27dccdcb6650dacb415433c4477b436807ec77312f8c3ede4. 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/ITV701108201.
Overture (Suite) in C Major, TWV 55:C6: VII. Gigue (Signaturmelodin till antikrundan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696a577ff2164361d5f748fd705d2393c40af5d7256424deb6b34a31934c4fc0. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/HKI199952007.
The Four Seasons, Violin Concerto No. 1 in E Major, RV. 269 'La primavera': I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b4934c75d7a444e1eb8bce279a522c56764c1f09d21bcc95e90c2cd58c933e. 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/GBAYD7200044.
Gloria in D Major, RV. 589: II. Et in terra pax hominibus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62314f41ac1c8b3d5f12bde14c57458015833809d38430a80099c03047c4f637. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBAYC9801320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb374c65375c46c41b8c8875b98f0a33b6467a9b1eef8ce19e3bad0002149679b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAYC7700112.
Czech Suite, B. 93: IV. Romanza (Andante con moto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1d76fc82d3649fa9245c2dd5d6a86bec1e81f079fcb4bd600649d189a61e3. 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/GBAYC8902429.
Nocturnes, Op. 9: No. 1, Larghetto in B-Flat Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f2692ab35d0eed0275910aa936b31df3e1c29cd123ccef4a1cc28a9d755328. 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/FRZ119505920.
Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86996532f9c2fc07165c9924bb017688d3d2e6b9025cb22b3d730b3ec3b5300. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC9300913.
Preludes, Op. 28: No. 6, Lento assai in B Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8808a969e15c8dbd0bf53f0b4137072c829958485568d3e2ac1367834c2a59a. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBAYC0500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d881e563b81ed3b697e0b2c5341bd31be04e61eec13b456f6a2f6e5bd18b10. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC8703086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c4ecb15752ff478ef880be16a47d8a5deea5a24d274c9addeeb5b29691c222. 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/GBAYC9000556.
Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e7a5033183ea1ddbc051fc9857c2552b51510c5b10401166919939090fb69. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBAYC8900564.
Violin Concerto in D Major, RV 228: I. Allegro non troppo ma vigoroso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc76ed142bc1e3607b5b0a884d6fd2ec73a7d9d3afe14157612faea0b29e6d38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199602201.
Violin Concerto in D Major, RV 228: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7265a250722e0384bd37e71362b78ccd92fa30cf873fb0e274deadee8a62e704. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKI199602202.
Violin Concerto in D Major, RV 228: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf499db9e97d0a4f0023f4bc8bf3ad4cea8fe2d0deff1e783d38b44f16162445a. 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/HKI199602203.
Violin Concerto in B Minor, RV 384: I. (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa6a1849be4069012f6859aed758e9aa669f61c7eece8bd97df1110faf881ae. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKI199602204.
Violin Concerto in B Minor, RV 384: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250dbfcfc8171b9fef1bca1f47da88c461489e346fba20c6780371a347d3eea8. 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/HKI199602205.
Violin Concerto in B Minor, RV 384: III. (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4947c8922995278fb4db0c5920b76ce0f88f7471cced49567f4b9dce4c8d36. 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/HKI199602206.
Violin Concerto in E-Flat Major, RV 262: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68063c38cc03b5efee8c70e22285fec79ad010a09e245c5adea13b076e69a1df. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/HKI199602207.
Violin Concerto in E-Flat Major, RV 262: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ad409bdea09bb7fb24cfe64c178ada5f9063753a8b7dedff95d70d7769837. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/HKI199602208.
Violin Concerto in E-Flat Major, RV 262: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe03502cdb353f5d63ccf259f37f475ec186d1a5708e05e56fef1d20ea43e551. 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/HKI199602209.
Violin Concerto in G Minor, RV 323: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf0c525be4262abe3fbea5028f8910d6b2975455cabc983773ca7d5d58e6740. 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/HKI199602210.
Violin Concerto in G Minor, RV 323: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dd0fcfd6c795088ebe58519d014a27fda5210d397a015b4559715561c3a594. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKI199602211.
Violin Concerto in G Minor, RV 323: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fecc6bc0ad606cfa3af2b2bfd8abb2f6c80a5d0ff266f95b5a8358ad16fb061. 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/HKI199602212.
Violin Concerto in F Major, RV 285: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc38e245a6b15788fa8c6b531679bdb0d651c884975a4204c4bbaad57c45e7f5. 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/HKI199602213.
Violin Concerto in F Major, RV 285: II. Grave. Adagio. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b877e41890f40479ef231f824d4c54d792c66bc928d8b93f89ff8427518a811. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/HKI199602214.
Violin Concerto in F Major, RV 285: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9559fc373f9f9e0fd0c3c433f8fe6eca4553baf6b656a5f2a6c703a3ae45f103. 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/HKI199602215.
Violin Concerto in D Minor, RV 245: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252aa57ca65ec0ab1bab2814591179136567233c15669c23c4042e35382a26df. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/HKI199602216.
Violin Concerto in D Minor, RV 245: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93770494dbfc5cf47a0b0de85ef404209a3b50aea10ad4f430f185cb45fcaaa0. 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/HKI199602217.
Violin Concerto in D Minor, RV 245: III. (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1643007d093af142f6cae15c0874fca6d9db3272a69cc8dc2677e103a7c6ac6a. 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/HKI199602218.
Violin Sonata No. 5 in F Major, Op. 24 "Spring": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd179517168972837e4adb87e1e499a8ec399e8ca483bbf036d0b99095d2094c. 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/GBAYC8500740.
Concerto for Violin and Orchestra in D Major, Op. 61: II. Larghetto
The Orchestra National De La Radiodiffusion Francaise
Orchestre National Radiodiffusion Française
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08194f28fd103179ee88510c039939c487c58dd565082ae1431ee087a35ca288. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ118904013.
Violin Concerto in A Minor, BWV 1041: I. (No Tempo Indication)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1b32b7eb9f17443991d6a2ec57a0beb3ff98684932d65092dbd7d1b495fe65. 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/GBAYC8200226.
Antonio Vivaldi : Il Canto, dallo strumento alla voce
Vivaldi : Le quattro stagioni a parte reali - Sonate RV27 & RV36
Antonio Bazzini, Giuseppe Martucci, Ottorino Respighi
Ravel & Fauré: Trios pour violon, violoncelle et piano
Vivaldi: Violin Concerto in D Major, RV 208 "Il grosso Mogul": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ba476bdcad476bc767b622f7a9679fdf57493fdd6aff904c3974ded5d2983. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRZ208010002.
Vivaldi: Concerto for Four Violins in B-Flat Major, RV 553: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9518eb1513d71cab35a76e4eab0d49a900d5c12f262af8636682254ad99c8e4c. 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/FRZ208308802.
Vivaldi: L'estro armonico, Concerto for 4 Violins in D Major, Op. 3 No. 1, RV 549: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d537be6f9daf588a932926b47291e9b21d6aff77555e43c95cf8b7c7c13833. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRZ208717410.
Vivaldi: L'estro armonico, Violin Concerto in G Major, Op. 3 No. 3, RV 310: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e8fe06139296647ff88f6eb78b63fee0f8acdda009e3092849d651419e962. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FRZ208717610.
Vivaldi: L'estro armonico, Violin Concerto in G Major, Op. 3 No. 3, RV 310: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfce5dde32b91486828798c851898e8f2ba252548c83d916cb8d742a27032aee. 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/FRZ208717620.
Vivaldi: L'estro armonico, Violin Concerto in G Major, Op. 3 No. 3, RV 310: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01bdefda6f4540cb6297f27ac33c0d20b6c6e9f32f01f99f4d6ab3962dee51f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FRZ208717630.
Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712ed3f4c29e1adad65504c9bf398b37c91d3157e2c86903b2e2029c037ed307. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRZ208717910.
Vivaldi: L'estro armonico, Violin Concerto in A Minor, Op. 3 No. 6, RV 356: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d4b7b95f224d520219f686a193497e77af155352c4941a14f695c1f8aabeb. 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/FRZ208717930.
Vivaldi: L'estro armonico, Concerto for 2 Violins in A Minor, Op. 3 No. 8, RV 522: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220eaa9ff7d77b0ddc94e0b2ca058f3ddf4c313b9e533f027f2603b9109351ef. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRZ208718110.
Vivaldi: L'estro armonico, Violin Concerto in D Major, Op. 3 No. 9, RV 230: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5916fcf605c40e92eb25297289290018336bc095f70933ff0a40c8ae5df63eff. 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/FRZ208718220.
Vivaldi: L'estro armonico, Concerto for 4 Violins in B Minor, Op. 3 No. 10, RV 580: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4056ee1fcd901a36065e3354e7b1cf5f943ef8601bec3b166a687cb5ba443d8e. 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/FRZ208718310.
Vivaldi: L'estro armonico, Concerto for 2 Violins in D Minor, Op. 3 No. 11, RV 565: I. Allegro - Adagio e spiccato - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3727db902fd1623f6dc415ba96087a54d44b5fdb5d380523cd6dda7ed048bd35. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRZ208718410.
Vivaldi: Violin Concerto in B-Flat Major, RV 363 "Il corneto da posta": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5404e39dc57c3e101828ceee77572d3e237d21eb6e5d1a48b172c3a38dec395d. 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/FRZ208000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ba476bdcad476bc767b622f7a9679fdf57493fdd6aff904c3974ded5d2983. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FRZ208010002.
Vivaldi: Violin Concerto in D Major, RV 208 "Il grosso Mogul": II. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9da358e707506fe944416fddfd8bdd974c26108fc7507fafbd8f550320c26b. 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/FRZ208010003.
Vivaldi: Violin Concerto in E Major, RV 271 "L'amoroso": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b33357e2d36baaca24b84b9271f974148dc7d599b6cba986975ae2dfc7b2147. 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/FRZ208000014.
Vivaldi: Violin Concerto in E Major, RV 271 "L'amoroso": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4856455d77be0435b10e809940f47d89572b279ef57f751687cc4313948bad71. 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/FRZ208000016.