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 0xeb79b86bddb261b4e29aca2631257d98b5977f91789f0dc628a85951312f07cf. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28e14b93-ca7a-49a5-903e-ff67ac55f4e7.json and https://artists.proofprofile.net/proofs/artist/28e14b93-ca7a-49a5-903e-ff67ac55f4e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sergei Rachmaninov: Cello Sonata - Nikolay Myaskovsky: Cello Sonatas
Cello Sonata in G Minor, Op. 19: I. Lento - Allegro moderato
Cello Sonata in G Minor, Op. 19: II. Allegro scherzando
Cello Sonata in G Minor, Op. 19: III. Andante
Cello Sonata in G Minor, Op. 19: IV. Allegro mosso
Cello Sonata No. 1 in D Major, Op. 12: I. Adagio - Andante
Cello Sonata No. 1 in D Major, Op. 12: II. Allegro passionato - Adagio
Cello Sonata No. 2 in A Minor, Op. 81: I. Allegro moderato
Cello Sonata No. 2 in A Minor, Op. 81: II. Andante cantabile
Cello Sonata No. 2 in A Minor, Op. 81: III. Allegro con spirito
Alexander Borodin: Cello Sonata - Igor Stravinsky: Suite Italienne for cello and piano - Sergey Prokofiev: Cello Sonata
Sonata for Cello and Piano in B Minor: I. Allegro
Sonata for Cello and Piano in B Minor: II. Pastorale. Andante dolce
Sonata for Cello and Piano in B Minor: III. Maestoso - Presto
Suite Italienne, for cello and piano: I. Introduzione. Allegro moderato
Suite Italienne, for cello and piano: II. Serenata. Larghetto
Suite Italienne, for cello and piano: III. Aria
Suite Italienne, for cello and piano: IV. Tarentella. Vivace
Suite Italienne, for cello and piano: V. Minuetto. Finale
Sonata for cello and piano in C Major, Op. 119: I. Andante grave - Moderato animato
Sonata for cello and piano in C Major, Op. 119: II. Moderato
Sonata for cello and piano in C Major, Op. 119: III. Allegro, ma non troppo
Frédéric Chopin: Cello Sonata, Introduction & Polonaise brillante - Edvard Grieg: Cello Sonata
Cello Sonata in G Minor, Op. 65: I. Allegro moderato
Cello Sonata in G Minor, Op. 65: II. Scherzo. Allegro con brio
Cello Sonata in G Minor, Op. 65: III. Largo
Cello Sonata in G Minor, Op. 65: IV. Finale. Allegro
Introduction et Polonaise brillante in C Major, Op. 3: Introduction. Lento - Alla polacca. Allegro con spirito
Cello Sonata in A Minor, Op. 36: I. Allegro agitato
Cello Sonata in A Minor, Op. 36: II. Andante molto tranquillo
Cello Sonata in A Minor, Op. 36: III. Allegro - Allegro molto e marcato
César Franck, Camille Saint-Saëns, Léon Boëllmann: Cello Sonatas
Cello Sonata No. 1 in C Minor, Op. 32: I. Allegro
Cello Sonata No. 1 in C Minor, Op. 32: II. Andante tranquillo sostenuto
Cello Sonata No. 1 in C Minor, Op. 32: III. Allegro moderato
Cello Sonata in A Minor, Op. 40: I. Maestoso - Allegro con fuoco
Cello Sonata in A Minor, Op. 40: II. Andante
Cello Sonata in A Minor, Op. 40: III. Allegro molto - Poco animato
Cello Sonata in A Major, FWV 8: I. Allegretto
Cello Sonata in A Major, FWV 8: II. Allegro
Cello Sonata in A Major, FWV 8: III. Recitativo - Fantasia (Ben moderato)
Cello Sonata in A Major, FWV 8: IV. Allegretto poco mosso
Krzysztof Penderecki: Sextet, String Trio, Cadenza, Per Slava, Divertimento
Divertimento, per Violoncello Solo: I. Serenade
Divertimento, per Violoncello Solo: II. Scherzo
Divertimento, per Violoncello Solo: III. Notturno
Sextet for Piano, Violin, Viola, Cello, Clarinet and French Horn: I. Allegro moderato
Sextet for Piano, Violin, Viola, Cello, Clarinet and French Horn: II. Larghetto
Alexander Tcherepnin: Complete Works for Cello and Piano
Cello Sonata No. 1, Op. 29: II. Cadenza - Très rythmé et énergique - Cadenza
Cello Sonata No. 1, Op. 29: III. Allegretto - Allegro
Cello Sonata No. 2, Op. 30/1: I. Allegro
Cello Sonata No. 2, Op. 30/1: III. Vivace
Cello Sonata No. 3, Op. 30/2: I. Allegro moderato
Cello Sonata No. 3, Op. 30/2: II. Andantino
Cello Sonata No. 3, Op. 30/2: III. Presto
The Well-Tempered Cello, Op. 38 (Twelve Preludes on a scale of nine Intervals): I. Moderato
The Well-Tempered Cello, Op. 38 (Twelve Preludes on a scale of nine Intervals): II. Tempo risoluto