1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d99e67c53bfb959310514de6924ac5a864943ed37e2675f311588b7a1c8b688. 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/a8bf4cbc-f3b5-4288-842e-656938837a2b.json and https://artists.proofprofile.net/proofs/artist/a8bf4cbc-f3b5-4288-842e-656938837a2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Duo for Violin and Viola in G Major, K. 423: I. Allegro
Duo for Violin and Viola in G Major, K. 423: II. Adagio
Duo for Violin and Viola in G Major, K. 423: III. Rondeau - Allegro
Duo for Violin and Viola in C Major, MH 335: I. Allegro
Duo for Violin and Viola in C Major, MH 335: II. Adagio
Duo for Violin and Viola in C Major, MH 335: III. Rondo con spirito
12 Duos for 2 Violins, Op. 49: I. Andante
12 Duos for 2 Violins, Op. 49: II. Andantino
12 Duos for 2 Violins, Op. 49: III. Andante
12 Duos for 2 Violins, Op. 49: IV. Poco allegro
12 Duos for 2 Violins, Op. 49: V. Vivace
12 Duos for 2 Violins, Op. 49: VI. Con moto
12 Duos for 2 Violins, Op. 49: VII. Allegretto
12 Duos for 2 Violins, Op. 49: VIII. Con fuoco
12 Duos for 2 Violins, Op. 49: IX. Andante
12 Duos for 2 Violins, Op. 49: X. Con moto
12 Duos for 2 Violins, Op. 49: XI. Cantabile
12 Duos for 2 Violins, Op. 49: XII. Vivace
Sonata for 2 Violins in C Major, Op. 56: I. Andante cantabile
Sonata for 2 Violins in C Major, Op. 56: II. Allegro
Sonata for 2 Violins in C Major, Op. 56: III. Commodo - quasi allegretto
Sonata for 2 Violins in C Major, Op. 56: IV. Allegro con brio
Sonata for 2 Violins in C Major, Op. 56: III. Commodo - Quasi allegretto
Sonata for 2 Violins in C Major, Op. 56: IV. Allegro con
Tchaikovsky & Glazunov: Violin Concertos
Violin Concerto in D Major, Op. 35, TH 59: I. Allegro moderato - Moderato assai
Violin Concerto in D Major, Op. 35, TH 59: II. Canzonetta. Andante
Violin Concerto in D Major, Op. 35, TH 59: III. Finale. Allegro vivacissimo
Violin Concerto in A Minor, Op. 82: I. Moderato
Violin Concerto in A Minor, Op. 82: II. Andante sostenuto
Violin Concerto in A Minor, Op. 82: III. Più animato
Violin Concerto in A Minor, Op. 82: IV. Allegro
Sinfonia concertante in E-Flat Major, K. 364: I. Allegro maestoso
Mozart: Violin Concerto No. 5, K. 219 & Sinfonia Concertante, K. 364
Sinfonia concertante in E-Flat Major, K. 364: II. Andante
Sinfonia concertante in E-Flat Major, K. 364: III. Presto
Violin Concerto No. 1 in A Minor, Op. 77: I. Nocturne. Moderato
Shostakovich: Violin Concertos Nos. 1 & 2
Violin Concerto No. 1 in A Minor, Op. 77: II. Scherzo. Allegro
Violin Concerto No. 1 in A Minor, Op. 77: III. Passacaglia. Andante
Violin Concerto No. 1 in A Minor, Op. 77: IV. Burlesque. Allegro con brio
Violin Concerto No. 2 in C-Sharp Minor, Op. 129: I. Moderato
Violin Concerto No. 2 in C-Sharp Minor, Op. 129: II. Adagio
Violin Concerto No. 2 in C-Sharp Minor, Op. 129: III. Adagio - Allegro
Vyacheslav Artyomov: In Spe & Latin Hymns
Moto perpetuo, Op. 11, MS 72 (Version for violin and orchestra)