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 0x7cb4e5dc197502294cc101fcc47ab35eb9c7700061fbe8ab23babbb2fa006665. 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/c099e451-c390-40bd-b9a2-1e2cba40352e.json and https://artists.proofprofile.net/proofs/artist/c099e451-c390-40bd-b9a2-1e2cba40352e.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
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: Violin Sonatas, Op. 5 – La gioia
Violin Sonata in D Major, Op. 5 No. 1: I. Grave - Allegro - Adagio
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Violin Sonata in D Major, Op. 5 No. 1: V. Allegro
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Violin Sonata in B-Flat Major, Op. 5 No. 2: I. Grave
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Violin Sonata in C Major, Op. 5 No. 3: III. Adagio
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Violin Sonata in G Minor, Op. 5 No. 5: II. Vivace
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La bellezza: The Beauty of 17th Century Violin Music
Trio Sonata sopra la Mónica, Op. 8 No. 45
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Partita No. 5 in G Minor, C 66: I. Intrada. Alla breve
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Partita No. 5 in G Minor, C 66: V. Passacaglia
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Violin Sonata No. 2 in A Minor: III. Imitatione del liuto
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The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo e pianissimo sempre
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The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Danza pastorale. Allegro
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The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": II. Adagio e piano
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The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
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The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio molto
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The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": I. Allegro non molto
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The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": III. Allegro
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Las 4 Estaciones Porteñas: I. Verano Porteño
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Las 4 Estaciones Porteñas: II. Invierno Porteño
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Violin Concerto in E Major, BWV 1042: II. Adagio
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Violin Concerto in D Minor, BWV 1052: I. Allegro
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Violin Sonata III in F Major, C. 140: I. Adagio
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Violin Sonata V in E Minor, C. 142: II. Variation
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Violin Sonata I in A Major, C. 138: I. —
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Violin Sonata I in A Major, C. 138: II. Presto
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Violin Parthia No. 7 in C Minor "Artificioso-ariosa": V. Aria
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Vivaldi: Il grosso mogul – Violin Concertos & Sonatas
Violin Concerto in D Major, RV 226: I. Allegro
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Violin Concerto in D Major, RV 226: II. Largo
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Violin Sonata No. 1 in C Major, RV 4: I. Largo
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Violin Sonata No. 1 in C Major, RV 4: III. Largo
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Violin Sonata No. 1 in C Major, RV 4: IV. Allegro
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Violin Sonata No. 2 in B Minor, RV 37: I. Largo
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Violin Sonata No. 2 in B Minor, RV 37: III. Largo
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Violin Sonata No. 2 in B Minor, RV 37: IV. Allegro
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Violin Sonata in E Minor, RV 17a "Manchester Sonata No. 9": II. Corrente. Allegro
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Violin Sonata in E Minor, RV 17a "Manchester Sonata No. 9": IV. Allemanda. Allegro
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Vivaldi: Premieres (Violin Concertos & Sonatas)
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Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
Violin Concerto in G Minor, BWV 1056: III. Presto
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