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 0xeafa93733b6320e97c64b2c98ff7d2bac003a44fec3e025345e9e4dd9379cb6f. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1de8c15f-6ba8-42f0-b785-8a2270a71e3e.json and https://artists.proofprofile.net/proofs/artist/1de8c15f-6ba8-42f0-b785-8a2270a71e3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clarinet Quintet in B Minor, Op. 115: I. Allegro
Clarinet Quintet in B Minor, Op. 115: II. Andante-piu lento
Clarinet Quintet in B Minor, Op. 115: III. Andantino-presto non assai, ma con sentimento
Clarinet Quintet in B Minor, Op. 115: IV. Con moto
8 Pieces for Clarinet, Viola and Piano, Op. 83: I. Andante
8 Pieces for Clarinet, Viola and Piano, Op. 83: II. Allegro Molto
8 Pieces for Clarinet, Viola and Piano, Op. 83: III. Andante con Moto
8 Pieces for Clarinet, Viola and Piano, Op. 83: IV. Allegro Agitato
8 Pieces for Clarinet, Viola and Piano, Op. 83: V. Rumanische Melodie
8 Pieces for Clarinet, Viola and Piano, Op. 83: VI. Nachtgesang
8 Pieces for Clarinet, Viola and Piano, Op. 83: VII. Allegro vivace, ma non Troppo
8 Pieces for Clarinet, Viola and Piano, Op. 83: VIII. Moderato
Märchenerzählungen, Op. 132: I. Lebhaft, nicht zu schnell
Märchenerzählungen, Op. 132: II. Lebhaft und sehr markiert
Märchenerzählungen, Op. 132: III. Ruhiges Tempo, mit zartem Ausdruck
Märchenerzählungen, Op. 132: IV. Lebhaft, sehr markiert
Clarinet Quintet in B-Flat Major, Op. 34: I. Allegro
Clarinet Quintet in B-Flat Major, Op. 34: II. Fantasia. Adagio ma non Troppo
Clarinet Quintet in B-Flat Major, Op. 34: III. Menuetto. Capriccio Presto
Clarinet Quintet in B-Flat Major, Op. 34: IV. Rondo. Allegro Giocoso
Quartet No. 1 in E-Flat Major, Op. 2: I. Poco adagio - Allegro
Quartet No. 1 in E-Flat Major, Op. 2: II. Romanze. Cantabile
Quartet No. 1 in E-Flat Major, Op. 2: III. Menuetto. Allegro
Quartet No. 1 in E-Flat Major, Op. 2: IV. Rondo. Allegro vivace
Konzertstück No. 2, Op. 114: II. Andante
Konzertstück No. 2, Op. 114: III. Allegretto grazioso
Trio for Flute, Clarinet and Bassoon, Op. 32: I. Allegro
Trio for Flute, Clarinet and Bassoon, Op. 32: II. Andante grazioso
Trio for Flute, Clarinet and Bassoon, Op. 32: III. Rondo. Allegretto
Trio pathétique in D Minor: I. Allegro moderato
Trio pathétique in D Minor: II. Scherzo, vivacissimo - Trio
Trio pathétique in D Minor: IV. Maestoso risoluto
Trio pathétique in D Minor: IV. Allegro con spirit
Trio in A Major, Frwv IV 5/10, Meiner Lieben Gerta! Ostern 1941: I. Satz Allegro Moderato
Trio in A Major, Frwv IV 5/10, Meiner Lieben Gerta! Ostern 1941: II. Satz Ruhig, Mit Ausdruck
Trio in A Major, Frwv IV 5/10, Meiner Lieben Gerta! Ostern 1941: III. Satz Presto
Trio in A Major, Frwv IV 5/10, Meiner Lieben Gerta! Ostern 1941: IV. Satz. Finale. Allegretto Con Moto
Clarinet Quintet in A Major, Op. 146: I. Moderato ed amabile
Clarinet Quintet in A Major, Op. 146: II. Vivace
Clarinet Quintet in A Major, Op. 146: III. Largo
Clarinet Quintet in A Major, Op. 146: IV. Poco allegretto
Clarinet Trio in A Minor, Op. 40: I. Mäßig schnell
Clarinet Trio in A Minor, Op. 40: II. Anmutig bewegt
Clarinet Trio in A Minor, Op. 40: III. Andante
Duo for Clarinet and Piano, Op. 4: I. Allegro moderato - Adagio
Duo for Clarinet and Piano, Op. 4: II. Allegro Agitato
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf28298a222b7315fcb58aa49b724fcf94c682d747a6f7d7457f32554f6eb8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332105170.
Trio No. 2, Op. 7: I. Allegro non Troppo
Trio No. 2, Op. 7: IV. Allegro non Troppo
Divertimento No. 2 in B-Flat Major, K. Anh. 229
Divertimento No. 2 in B-Flat Major, K. Anh. 229: I. Allegro
Divertimento No. 2 in B-Flat Major, K. Anh. 229: II. Menuetto
Divertimento No. 2 in B-Flat Major, K. Anh. 229: III. Larghetto
Divertimento No. 2 in B-Flat Major, K. Anh. 229: IV. Menuetto
Divertimento No. 2 in B-Flat Major, K. Anh. 229: V. Rondo (Allegro)
Nobody Knows the Trouble I've Seen (Arr. for Three Clarinets by Michael Brand - Live)
Nobody Knows the Trouble I've Seen - Arr. for Three Clarinets by Michael Brand - Live
Three Klezmer Trios: No. 1, Bulgar (Arr. for three Clarinets by Mike Curtis - Live)
Three Klezmer Trios: No. 1, Bulgar - Arr. for three Clarinets by Mike Curtis - Live
Bist du bei mir, BWV 508 (Arr. for Four Clarinets)
Bist du bei mir, BWV 508 - Arr. for Four Clarinets
Hungarian Dances, WoO 1: Book 1 No. 5 in F-Sharp Minor (Arr. for Three Clarinets)
Hungarian Dances, WoO 1: Book 1 No. 5 in F-Sharp Minor - Arr. for Three Clarinets
Mozart: Opera Arrangements for Two Clarinets and Basset Horn (Arr. for Two Clarinets and Basset Horn)
Die Zauberflöte, K. 620: Overture - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Der Vogelfänger bin ich ja - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Hm! Hm! Hm! - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Du feines Täubchen, nur herein - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Bei Männern, welche Liebe fühlen - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Wie stark ist nicht dein Zauberton - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Es lebe Sarastro - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Marsch der Priester - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Bewahret euch vor Weibertücken - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Alles fühlt der Liebe Freuden - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Ach, ich fühl's, es ist verschwunden - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Ein Mädchen oder Weibchen - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Bald prangt, den Morgen zu verkünden - Arr. for Two Clarinets and Basset Horn
Die Zauberflöte, K. 620: Der Hölle Rache kocht - Arr. for Two Clarinets and Basset Horn
La clemenza di Tito, K. 621: Parto, parto ma tu ben mio - Arr. for Two Clarinets and Basset Horn
La clemenza di Tito, K. 621: Torna di Tito a lato - Arr. for Two Clarinets and Basset Horn
La clemenza di Tito, K. 621: Chi ciecamente crede - Arr. for Two Clarinets and Basset Horn
La clemenza di Tito, K. 621: Non piu di fiori vaghe catene - Arr. for Two Clarinets and Basset Horn
Don Giovanni, K. 527: Madamina, il catalogo è questo - Arr. for Two Clarinets and Basset Horn
Don Giovanni, K. 527: Non mi dir, bell' idol mio - Arr. for Two Clarinets and Basset Horn
Don Giovanni, K. 527: Vedrai, carino - Arr. for Two Clarinets and Basset Horn
Don Giovanni, K. 527: La ci darem la mano - Arr. for Two Clarinets and Basset Horn
Don Giovanni, K. 527: Dalla sua pace - Arr. for Two Clarinets and Basset Horn
Don Giovanni, K. 527: Riposate, vezzose ragazze - Arr. for Two Clarinets and Basset Horn
Le nozze di Figaro, K. 492: Al desio di chi t'adora - Arr. for Two Clarinets and Basset Horn
Le nozze di Figaro, K. 492: Voi che sapete - Arr. for Two Clarinets and Basset Horn
Le nozze di Figaro, K. 492: Non piu andrai, farfallone amoroso - Arr. for Two Clarinets and Basset Horn