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 0x85de58dc5b60550d09758366274b1e7d7de921fa2a7321211db3e105edc81979. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bae19d3d-467e-4e25-9ebe-04bca7c64fe3.json and https://artists.proofprofile.net/proofs/artist/bae19d3d-467e-4e25-9ebe-04bca7c64fe3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bassoon Concerto in B-Flat Major, K. 191 (Arr. Rosin for Trombone): I. Allegro
Bassoon Concerto in B-Flat Major, K. 191 (Arr. Rosin for Trombone): II. Andante ma adagio
Bassoon Concerto in B-Flat Major, K. 191 (Arr. Rosin for Trombone): III. Rondo. Tempo di Menuetto
Concertino d'hiver, Op. 327: II. Très modéré
Concertino, Op. 45 No. 7: I. Preludium. Allegro pomposo
Concertino, Op. 45 No. 7: II. Aria. Andante sostenuto
Concertino, Op. 45 No. 7: III. Finale. Allegro giocoso
Armin, Rosin: Baroque Trombone and Brass Chamber
Wer nur den lieben Gott lasst walten, BWV 647
Violin Sonata in F Major, Op. 5 (arr. for trombone): Trombone Sonata in F Major, Op. 5
Sonata a 3, Sonata a 4, Sonata a 3, Aufzug
Canzon No. 27 Fa sol la re / Canzon septimi toni No. 2 a 8
Canzoni da suonare a 4–13, Libro 1, Op. 9: Canzon No. 26, "La Negrona"
Violin Sonata in F Major, Op. 5: Trombone Sonata in F Major, Op. 5 (Arr. For trombone)
Wie schon leuchtet der Morgenstern (Arr. For corno da caccia and organ)
Canzoni da suonare a 4–13, Libro 1, Op. 9 +: Canzon No. 26, "La Negrona"
Posaunenkonzert in B-Dur, KV 191: I. Allegro
Posaunenkonzert in B-Dur, KV 191: II. Andante ma adagio
Posaunenkonzert in B-Dur, KV 191: III. Rondo
Concertino d'hiver, op. 327: Animé - Très modéré - Animé
Concertino 7, op. 45: I. Preludium, Allegro pomposo
Concertino 7, op. 45: II. Aria, Andante sostenuto
Concertino 7, op. 45: III. Finale, Allegro giocoso
Concertino, op. 91: II. Elegia (Andante strasciato)
Concertino, op. 91: III. Rondo (Allegro con fuoco)
Dancing Suite: III. Bourrée - Menuet - Bourrée
Sonata No.9 in D Minor, Op. 8: I. Siciliano
Sonata No.9 in D Minor, Op. 8: II. Allemanda
Sonata No.9 in D Minor, Op. 8: III. Arietta
Sonata No.9 in D Minor, Op. 8: IV. Menuets
Sonata No.12 in G Major, Op. 8: I. Largo
Sonata No.12 in G Major, Op. 8: II. Vivace
Sonata No.12 in G Major, Op. 8: III. Menuets
Cello Sonata in B-Flat Major, RV 47: I. Largo
Cello Sonata in B Major, RV 47: II. Allegro
Cello Sonata in B-Flat Major, RV 47: III. Largo
Cello Sonata in B-Flat Major, RV 47: IV. Allegro
Canzon per sonar septimi toni a 8, Ch. 172
Canzon No. 28, Ch. 191 "Sol-sol-la-sol-fa-mi"
Darmstadt Aural Documents, Box 1 - Composers-Conductors
Children of the "Hauptschule Peter-Griess-Strasse", Köln
Kagel: "1898" for Children's Voices and Instruments; Music for Renaissance Instruments
Konzert für Posaune und Orchester in B-Flat Major: I. Tempo di marcia, moderato
Konzert für Posaune und Orchester in B-Flat Major: II. Thema. Moderato
Konzert für Posaune und Orchester in B-Flat Major: III. Variation I. Frisch
Konzert für Posaune und Orchester in B-Flat Major: IV. Variation II. Maestoso
Konzert für Posaune und Orchester in B-Flat Major: V. Adagio
Konzert für Posaune und Orchester in B-Flat Major: VI. Tempo di marcia, moderato
Konzert in B-Flat Major: I. Allegro maestoso
Konzert in B-Flat Major: III. Allegro moderato
Konzert in B-Flat Major: IV. Variation I. Allegro
Konzert in B-Flat Major: V. Variation II und Finale. Allegro moderato
Konzert No. 2 für Posaune und Orchester in A Major: I. Allegro maestoso
Konzert No. 2 für Posaune und Orchester in A Major: II. Andantino sostenuto
Konzert No. 2 für Posaune und Orchester in A Major: III. Rondo