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 0xe31d8c2aeddefc0c07f73fdb69cc7647faedf4ac77e16d7517868b9a79fa24f6. 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/bad94ec4-35ae-4e68-ad44-453d6484cd1b.json and https://artists.proofprofile.net/proofs/artist/bad94ec4-35ae-4e68-ad44-453d6484cd1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Duport: Concertos pour violoncelle & Duos
Duport: Cello Concerto No. 2 in G Major: I. Allegro (Cadenza by Lodéon)
Duport: Cello Concerto No. 2 in G Major: II. Romance
Duport: Cello Concerto No. 2 in G Major: III. Rondo
Duport: Cello Concerto No. 5 in D Major: I. Allegro (Cadenza by Lodéon)
Duport: Cello Concerto No. 5 in D Major: II. Adagio cantabile
Duport: Cello Concerto No. 5 in D Major: III. Rondeau (Cadenza by Lodéon)
Duport / Arr. Robert: Cello Duet No. 2 in D Major: I. Allegro molto
Duport / Arr. Robert: Cello Duet No. 2 in D Major: II. Rondeau
Duport / Arr. Robert: Cello Duet No. 3 in G Major: I. Adagio - Presto
Duport / Arr. Robert: Cello Duet No. 3 in G Major: II. Rondeau
Duport, J.-L.: Cello Music (Napoleon's Cellist)
Cello Sonata No. 1 in G Major: I. Allegro moderato
Cello Sonata No. 1 in G Major: II. Andante grazioso
Cello Sonata No. 1 in G Major: III. Vivace
Duo Concertante in F Major: II. Variation 1
Duo Concertante in F Major: II. Variation 2
Duo Concertante in F Major: II. Variation 3
Duo Concertante in F Major: II. Variation 4
Duo Concertante in F Major: II. Variation 5
Duo Concertante in F Major: II. Variation 6
Duo Concertante in F Major: II. Variation 7
Duo Concertante in F Major: III. Lentement
Cello Sonata No. 2 in G Major: I. Allegro
Cello Sonata No. 2 in G Major: II. Larghetto
Cello Sonata No. 2 in G Major: III. Allegro vivo
Duport, J.-L. / Bochsa, N.C.: Cello and Harp Music (Melange)
Nocturne No. 1 in E-Flat Major: I. Lento - Andante amoroso
Nocturne No. 1 in E-Flat Major: II. Polonaise
Melange de themes nouveaux, Op. 75: Lento
Melange de themes nouveaux, Op. 75: Andante non troppo
Melange de themes nouveaux, Op. 75: Allegro agitato
Melange de themes nouveaux, Op. 75: Pastorale
Melange de themes nouveaux, Op. 75: Theme. Andante
Melange de themes nouveaux, Op. 75: Variation 1
Melange de themes nouveaux, Op. 75: Variation 2
Melange de themes nouveaux, Op. 75: Variation 3
Melange de themes nouveaux, Op. 75: Variation 4
Melange de themes nouveaux, Op. 75: Tempo di marcia
Melange de themes nouveaux, Op. 75: Recitative. Allegro
Melange de themes nouveaux, Op. 75: Allegretto
Nocturne No. 3 in G Minor: Allegro vivace
Nocturne No. 3 in G Minor: Andante simplice
Melange de themes nouveaux, Op. 75: Theme: Andante
Melange de themes nouveaux, Op. 75: Recitative: Allegro
Cello Concerto No. 5 in D Major: I. Allegro
Cello Concerto No. 5 in D Major: II. Adagio cantabile
Cello Concerto No. 5 in D Major: III. Rondeau
Cello Concerto No. 6 in D Minor: I. Allegro
Cello Concerto No. 6 in D Minor: II. Andante cantabile, grazioso
Cello Concerto No. 6 in D Minor: III. Rondo. Allegretto
Cello Concerto No. 4 in E Minor: I. Allegro moderato
Cello Concerto No. 4 in E Minor: II. Romance
Cello Concerto No. 4 in E Minor: III. Rondeau
Etude No. 4 in C Minor (Allegro moderato et très marqué)
Etude No. 8 in D Major (Adagio cantabile)
Etude No. 9 in D Minor (Allegro moderato)
Etude No. 12 in E Major (Allegro moderato - Presqu'Andante)
Etude No. 14 in B-Flat Major (Andante grazioso)
Etude No. 18 in A-Flat Major (Allegro maestoso)
Cello Sonata No. 1 in D Major, Op. 4 No. 1: I. Allegro
Cello Sonata No. 1 in D Major, Op. 4 No. 1: II. Adagio
Cello Sonata No. 1 in D Major, Op. 4 No. 1: III. Rondeau gratioso
Cello Sonata No. 2 in G Major, Op. 4 No. 2: I. Allegro moderato
Cello Sonata No. 2 in G Major, Op. 4 No. 2: II. Adagio
Cello Sonata No. 2 in G Major, Op. 4 No. 2: III. Allegro assai
Cello Sonata No. 5 in F Major, Op. 4 No. 5: I. Allegro moderato
Cello Sonata No. 5 in F Major, Op. 4 No. 5: II. Adagio cantabile
Cello Sonata No. 5 in F Major, Op. 4 No. 5: III. Tempo di minuetto con variazioni
Cello Sonata No. 6 in D Major, Op. 4 No. 6: I. Allegro
Cello Sonata No. 6 in D Major, Op. 4 No. 6: II. Adagio
Cello Sonata No. 6 in D Major, Op. 4 No. 6: III. Alllegro assai
Cello Duo No. 2 in D Minor: I. Allegro molto
Cello Duo No. 3 in G Major: III. Rondeau gracioso
Jean-Louis Duport: Concertos pour violoncelle
Cello Concerto No. 1 in A Major, Op. 1: I. Allegro maestoso
Cello Concerto No. 1 in A Major, Op. 1: II. Romance. Adagio
Cello Concerto No. 1 in A Major, Op. 1: III. Rondeau
Cello Concerto No. 5 in D Major: II. Adagio. Cantabile
6 Cello Sonatas, Op. 3 No. 1 in D Major: I. Allegro
The Cello in Spain: Boccherini & Other 18th-Century Virtuosi
6 Cello Sonatas, Op. 3 No. 1 in D Major: II. Adagio
6 Cello Sonatas, Op. 3 No. 1 in D Major: III. Allegro
Nocturne, Op. 69 No. 3: I. Andante - Récitatif
Miniautres & Folklore — 23 pieces for cello and piano
Duport : Duo for 2 cellos in G major, Op.1/3 : Adagio-Presto
Duport : Cello Concerto No.1 in G major : Romance