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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28efa48cadaf47d06f1ff13b3b2e245140544965f1d04a3cf398a906d37a660. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fae53f83-a0d6-4d7d-9aeb-073c795450a0.json and https://artists.proofprofile.net/proofs/artist/fae53f83-a0d6-4d7d-9aeb-073c795450a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata in C Minor, Op. 25: I. Introduzione: Adagio
Sonata in C Minor, Op. 25: II. Fuga: [Allegro]
Sonata in C Minor, Op. 25: III. Sonata: Allegro molto
Sonata in C Minor, Op. 25: V. Allegretto
Sonata in C Major, Op. 33 No. 1: I. Allegro con Spirito
Sonata in C Major, Op. 33 No. 1: II. Andante con moto
Sonata in C Major, Op. 33 No. 1: III. Rondo. Allegro molto
Sonata in D Minor, Op. 33 No. 2: I. Allegro
Sonata in D Minor, Op. 33 No. 2: II. Andante
Sonata in D Minor, Op. 33 No. 2: III. Alla Polacca
Sonata in E Major, Op. 33 No. 3: I. Allegro
Sonata in E Major, Op. 33 No. 3: II. Andante Cantabile
Sonata in E Major, Op. 33 No. 3: III. Rondo Allegretto
Sonata in C Minor, Op. 25: I. Introduzione (Adagio)
Sonata in C Minor, Op. 25: II. Fuga (Allegro)
Sonata in C Minor, Op. 25: III. Sonata (Allegro molto)
Sonata in C Major, Op. 33 No. 1: III. Rondo (Allegro molto)
3 Piano Sonatas, Op. 33, Sonata No. 2 in D Minor: I. Allegro
3 Piano Sonatas, Op. 33, Sonata No. 2 in D Minor: II. Andante
3 Piano Sonatas, Op. 33, Sonata No. 2 in D Minor: III. Alla Polacca
3 Piano Sonatas, Op. 33, Sonata No. 3 in E Major: I. Allegro
3 Piano Sonatas, Op. 33, Sonata No. 3 in E Major: II. Andante Cantabile
3 Piano Sonatas, Op. 33, Sonata No. 3 in E Major: III. Rondo Allegretto
Piano Concerto No. 1 in G Major, Op. 20: I. Allegro moderato
Piano Concerto No. 1 in G Major, Op. 20: II. Andante
Piano Concerto No. 1 in G Major, Op. 20: III. Rondeau à la polonaise
Piano Concerto No. 5 in C Major, Op. 43 "Grand concerto militaire": I. Allegro
Piano Concerto No. 5 in C Major, Op. 43 "Grand concerto militaire": II. Andante
Piano Concerto No. 5 in C Major, Op. 43 "Grand concerto militaire": III. Finale. Allegro
Piano Concerto No. 6 in D Major, Op. 49 "Le coucou": I. Allegro moderato
Piano Concerto No. 6 in D Major, Op. 49 "Le coucou": II. Andante
Piano Concerto No. 6 in D Major, Op. 49 "Le coucou": III. Allegro molto
Piano Concerto No. 4 in G Major, Op. 36 "Le calme": II. Andante
String Quartet in C Minor, Op. 4, No. 3: I. Allegro
String Quartet in C Minor, Op. 4, No. 3: II. Menuetto - Trio
String Quartet in C Minor, Op. 4, No. 3: III. Adagio ma non troppo
String Quartet in C Minor, Op. 4, No. 3: IV. Presto
String Quartet in G Major, Op. 10, No. 4: I. Allegro
String Quartet in G Major, Op. 10, No. 4: II. Menuetto: Allegro
String Quartet in G Major, Op. 10, No. 4: III. Andante
String Quartet in G Major, Op. 10, No. 4: IV. Prestissimo
String Quartet in C Major, Op. 10, No. 1: I. Allegro moderato
String Quartet in C Major, Op. 10, No. 1: II. Andante
String Quartet in C Major, Op. 10, No. 1: III. Menuetto: Allegro
String Quartet in C Major, Op. 10, No. 1: IV. Allegro
String Quartet in G Major, Op. 10, No. 4: II. Menuetto. Allegro
String Quartet in C Major, Op. 10, No. 1: III. Menuetto. Allegro
Wolfl, J.: String Quartets, Op. 4, Nos. 1-3
String Quartet in C Major, Op. 4, No. 1: I. Allegro
String Quartet in C Major, Op. 4, No. 1: II. Allegretto
String Quartet in C Major, Op. 4, No. 1: III. Menuetto e Trio
String Quartet in C Major, Op. 4, No. 1: IV. Finale: Prestissimo
String Quartet in F Major, Op. 4, No. 2: I. Allegro
String Quartet in F Major, Op. 4, No. 2: II. Andante con moto
String Quartet in F Major, Op. 4, No. 2: III. Menuetto: Allegro
String Quartet in F Major, Op. 4, No. 2: IV. Finale: Allegro ma non troppo
String Quartet in C Major, Op. 4, No. 1: IV. Finale. Prestissimo
String Quartet in F Major, Op. 4, No. 2: III. Menuetto. Allegro
String Quartet in F Major, Op. 4, No. 2: IV. Finale. Allegro ma non troppo
Sonate précédée d’une introduction et fugue in C Minor, WoO 113: I. Introduction. Adagio
Sonate précédée d’une introduction et fugue in C Minor, WoO 113: II. Fugue
Sonate précédée d’une introduction et fugue in C Minor, WoO 113: III. Allegro molto
Sonate précédée d’une introduction et fugue in C Minor, WoO 113: IV. Adagio
Sonate précédée d’une introduction et fugue in C Minor, WoO 113: V. Allegretto
Piano Sonata in B Minor, Op. 38: I. Allegro
Piano Sonata in B Minor, Op. 38: II. Adagio
Piano Sonata in B Minor, Op. 38: III. Presto
Piano Sonata in F Major, Op. 27 No. 2: I. Allegro
Piano Sonata in F Major, Op. 27 No. 2: II. Andante
Piano Sonata in F Major, Op. 27 No. 2: III. Allegretto
Piano Sonata in A Minor, Op. 6 No. 1: I. Allegro
Piano Sonata in A Minor, Op. 6 No. 1: II. Adagio ma non troppo
Piano Sonata in A Minor, Op. 6 No. 1: III. Presto
Piano Sonata in D Major, Op. 6 No. 2: I. Allegro
Piano Sonata in D Major, Op. 6 No. 2: II. Andante
Piano Sonata in D Major, Op. 6 No. 2: III. Rondo. Allegro
Piano Sonata in A Major, Op. 6 No. 3: I. Allegro
Piano Sonata in A Major, Op. 6 No. 3: II. Largo
Piano Sonata in A Major, Op. 6 No. 3: III. Finale. Presto
Piano Sonata in D Major, Op. 58: I. Adagio - II. Allegro
Piano Sonata in D Major, Op. 58: III. Andante con variazioni - IV. Presto
Piano Concerto No. 2 in E Major, Op. 26: I. Allegro moderato
Piano Concerto No. 2 in E Major, Op. 26: II. Andante
Piano Concerto No. 2 in E Major, Op. 26: III. Finale. Allegro
Concerto da camera in E-Flat Major, WoO 97: I. Allegro moderato
Concerto da camera in E-Flat Major, WoO 97: II. Romance. Andantino
Concerto da camera in E-Flat Major, WoO 97: III. Finale. Allegro moderato
Piano Concerto No. 3 in F Major, Op. 32: I. Allegro
Piano Concerto No. 3 in F Major, Op. 32: II. Andante
Piano Concerto No. 3 in F Major, Op. 32: III. Finale. Presto