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 0xe9183a00d73c02684edd70f702a39c8cd1723a7bc6d3911b32c9b84eb9cbec17. 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/3d25f577-6170-4e1b-9fab-709847bd5a1f.json and https://artists.proofprofile.net/proofs/artist/3d25f577-6170-4e1b-9fab-709847bd5a1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto pour tuba: III. Finale - Rondo alla tedesca
Fables of Tuba: III. La partition déchirée
Samson et Delilah, Act II: Mon coeur s'ouvre a ta vox (arr. for tuba and orchestra)
Tuba Concerto in F Minor: I. Prelude: Allegro moderato
Tuba Concerto in F Minor: II. Romanza: Andante sostenuto
Tuba Concerto in F Minor: III. Finale: Rondo all tedesca: Allegro
Cavalleria Rusticana: Intermezzo (arr. A. Minel for tuba and orchestra)
Tango pour Claude (arr. for tuba and chamber orchestra)
Fables of Tuba: III. La partition dechiree
Tristorosa (arr. B. Ballaz for tuba and chamber orchestra)
Czardas (arr. O. Baadsvik for tuba and chamber orchestra)
Les Valseuses (arr. B. Ballaz for tuba and chamber orchestra)
Samson et Dalila, Op. 47, R. 288: Mon coeur s'ouvre à ta voix (Arr. for Tuba & Strings)
Tuba Concerto in F Minor: I. Prelude. Allegro moderato
Tuba Concerto in F Minor: II. Romanza. Andante sostenuto
Tuba Concerto in F Minor: III. Finale. Rondo all tedesca. Allegro
Cavalleria rusticana: Intermezzo (Arr. A. Minel for Tuba & Strings)
Tango pour Claude (Arr. for Tuba & Strings)
Tristorosa, W034 (Arr. B. Ballaz for Tuba & Strings)
Czardas (Arr. Ø. Baadsvik for Tuba & Strings)
Les valseuses (Arr. B. Ballaz for Tuba & Strings)
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
Histoire du Tango: I. Bordel 1900 (Arr. for Trumpet and Tuba by Manuel Doutrelant)
8 Pieces, Op. 39: No. 3, Berceuse (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Manhã de Carnaval (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Tango-Études: No. 3, Molto marcato e energico
El cant dels ocells (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
15 Two-Part Inventions, BWV 772-786: Invention No. 1 in C Major, BWV 772 (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
15 Two-Part Inventions, BWV 772-786: Invention No. 3 in D Major, BWV 774 (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
8 Pieces, Op. 39: No. 1, Gavotte (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Livre de clavecin No. 2, 6ème ordre: Les Baricades Mistérieuses (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Passacaglia after Handel’s Harpsichord Suite No. 7 in G Minor, HWV 432 (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Interlude No. 4 (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Beaulieu (Arr. for Trumpet and Tuba by Laurent Elbaz)
Down by the Salley Gardens (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
Couperin: Livre de clavecin No. 2, 6ème ordre: Les Baricades Mistérieuses