Barthold Kuijken (; born 8 March 1949, Dilbeek) is a Belgian flautist and recorder player, known for playing baroque music on historical instruments and particularly known for pioneering this manner o
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725ce68a3be3312d1250eee114bfd5f873938cae95d266f502b565607784116f. 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/fda2e23b-64d4-46ed-a0ad-23a1ee808fee.json and https://artists.proofprofile.net/proofs/artist/fda2e23b-64d4-46ed-a0ad-23a1ee808fee.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Sonata No. 7 in E Minor "La magnifique": I. Prélude
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
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Sonata No. 7 in E Minor "La magnifique": II. Allegro
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Sonata No. 7 in E Minor "La magnifique": IV. Sarabande
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Concert No. 8 in G Major "Les goûts réunis": VII. Sarabande. Grave et tendre
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Suite No. 9 in G Major "Sonate l'inconnuë": III. Chaconne
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Concerto for 2 Flutes & Bassoon in G Major, TWV 53:G1: I. Vivace
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Concerto for 2 Flutes & Bassoon in G Major, TWV 53:G1: II. Allegro
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Concerto for 2 Flutes & Bassoon in G Major, TWV 53:G1: III. Largo
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Concerto for 2 Flutes & Bassoon in G Major, TWV 53:G1: IV. Presto
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Sonata in E Minor, TWV 50:4: I. Gravement
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Sonata in E Minor, TWV 50:4: II. Alla breve
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Sonata in E Minor, TWV 50:4: IV. Tendrement
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Concerto for 2 Flutes, Violin & Cello in D Major, TWV 54:D1: I. Vivace
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Concerto for 2 Flutes, Violin & Cello in D Major, TWV 54:D1: II. Siciliana
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Concerto for 2 Flutes, Violin & Cello in D Major, TWV 54:D1: III. Allegro
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Concerto for 2 Flutes, Violin & Cello in D Major, TWV 54:D1: IV. Gavotte. Presto
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Sinfonia melodica in C Major, TWV 50:2: I. Vivace assai
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Sinfonia melodica in C Major, TWV 50:2: II. Sarabande
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Sinfonia melodica in C Major, TWV 50:2: III. Bourrée
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Sinfonia melodica in C Major, TWV 50:2: IV. Menuet en rondeau
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Sinfonia melodica in C Major, TWV 50:2: V. Loure
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Sinfonia melodica in C Major, TWV 50:2: VI. Chaconnette
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Sinfonia melodica in C Major, TWV 50:2: VII. Gigue en canarie
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The Grand Mogul: Virtuosic Baroque Flute Concertos
Flute Concerto in D Minor, RV 431a "Il gran mogol": I. Allegro non molto
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Flute Concerto in D Minor, RV 431a "Il gran mogol": II. Larghetto
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Flute Concerto in D Minor, RV 431a "Il gran mogol": III. Allegro
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Flute Concerto in G Major, P. 33: I. Spiritoso
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Flute Concerto in G Major, P. 33: II. Adagio
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Flute Concerto in G Major, P. 33: III. Allegro spiritoso
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Flute Concerto in C Major, Op. 7 No. 3: I. Allegro
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Flute Concerto in C Major, Op. 7 No. 3: II. Adagio
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Flute Concerto in D Major, TWV 51:D1: I. Andante
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Flute Concerto in D Major, TWV 51:D1: II. Vivace
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Flute Concerto in D Major, TWV 51:D1: IV. Allegro
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Ariane et Bacchus Suite (Excerpts): Ouverture
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Handel: The Complete Solo Sonatas for Wind Instruments
Flute Sonata in E Minor, Op. 1 No. 1b, HWV 359b: I. Grave
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Flute Sonata in B Minor, Op. 1 No. 9, HWV 367b: VI. Andante
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Bach, J.S.: Flute Sonata, Bwv 1034 / Bach, C.P.E.: Flute Sonata, Wq. 131, H. 561 / Mozart, W.A.: Flute Quartet No. 1
Flute Sonata in D Major, HWV 378: I. Adagio
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Flute Music (French and Italian 18Th Century) - Monteclair, M.P. / Blavet, M. / Guignon, J.-P. / Boismortier, J.B. / Leclair, J.-M.
Suite in D Major, Op. 2, No. 1: I. Prelude
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Suite in E Minor, Op. 2, No. 4: I. Prelude
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Suite in D Major, Op. 2, No. 1: II. Allemande La Royalle
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Suite in E Minor, Op. 2, No. 4: II. Allemande La Fontainebleau
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Suite in D Major, Op. 2, No. 1: III. Rondeau Le Duc d' Orleans
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Suite in D Major, Op. 2, No. 1: IV. Sarabande La d' Armagnac
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Suite in E Minor, Op. 2, No. 4: IV. Air Le Fleuri
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Suite in D Major, Op. 2, No. 1: V. Gavotte La Meudon
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Suite in D Major, Op. 2, No. 1: VI. Menuet Le Comte de Brione
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Suite in D Major, Op. 2, No. 1: VI. Menuet II
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Suite in D Major, Op. 2, No. 1: VII. Gigue La Folichon
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Suite in G Major, Op. 2, No. 2: I. Prelude
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Suite in G Major, Op. 2, No. 3: I. Allemande La Cascade de Saint-Cloud
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Suite in G Major, Op. 2, No. 2: II. Allemande L'Atalante
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Suite in G Major, Op. 2, No. 2: III. Sarabande La Fidelle
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Suite in G Major, Op. 2, No. 3: III. Courante-Double L'indifferente
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Suite in G Major, Op. 2, No. 2: IV. Petit Air tendre
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Suite in G Major, Op. 2, No. 2: V. Gavotte en Rondeau La Maillebois
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Suite in G Major, Op. 2, No. 2: V. Gavotte II
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Suite in G Major, Op. 2, No. 2: VI. Rondeau Le Baron
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Suite in C Minor, Op. 5, No. 2: I. Prelude
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Suite in E Minor, Op. 2, No. 5: I. Allemande La Chauvet
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Suite in E Minor, Op. 2, No. 5: II. La Messinoise
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Suite in E Minor, Op. 2, No. 5: III. Rondeau Le Lutin
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Suite in B Minor, Op. 5, No. 4: II. Allemande
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Suite in B Minor, Op. 5, No. 4: V. Grave
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Telemann: Works for Flute and Viola Da Gamba
Devienne, F.: Flute Quartets, Opp. 16, 66
Couperin, F.: Concerts Royaux / Nouveaux Concerts
Boismortier, J.B.: Flute Concertos, Op. 15, Nos. 1-6 / Suite De Pieces, Op. 35, No. 5 / Sonata En Trio, Op. 7, No. 4
Suite de pieces in B Minor, Op. 35, No. 5: IV. Fantaisie
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Flute Concerto in G Major. Op. 15, No. 1: II. Largo
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Concerto for 5 Flutes in A Minor, Op. 15, No. 2: I. Allegro
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Vivaldi: Concerti per flauto traversiere
Flute Concerto in E Minor, RV 432: I. Allegro
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Flute Concerto in G Major, RV 436: I. Allegro
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Flute Concerto in G Major, RV 436: II. Largo
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Flute Concerto in G Major, RV 436: III. Allegro
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Flute Concerto in D Major, RV 429: I. Allegro
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Flute Concerto in D Major, RV 429: : II. Andante
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Flute Concerto in D Major, RV 429: : III. Allegro
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Flute Concerto in A Minor, RV 440: I. Allegro non molto
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Flute Concerto in A Minor, RV 440: II. Larghetto
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Flute Concerto in A Minor, RV 440: III. Allegro
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Flute Concerto in C Major, RV 533: I. Allegro molto
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Flute Concerto in C Major, RV 533: II. Largo
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Flute Concerto in C Major, RV 533: III. Allegro
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Flute Concerto in G Major, RV 438: I. Allegro
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Flute Concerto in G Major, RV 438: II. Andante
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Flute Concerto in G Major, RV 438: III. Allegro
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Flute Concerto in G Major, RV 438b: I. Allegro
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Flute Concerto in D Major, RV 427: I. Allegro
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Flute Concerto in D Major, RV 427: II. Largo
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Flute Concerto in D Major, RV 427: III. Allegro
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Flute Concerto in E Minor, RV 431: I. Allegro
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Flute Concerto in E Minor, RV 431: II. Allegro
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Flute Recital: Kuijken, Barthold - Bach, J.S. / Hotteterre, J. / Weiss, S.L. / Rousseau, J.-J. / Bach, C.P.E. / Fischer, J.C.
Flute Partita in A Minor, BWV 1013: I. Allemande
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Flute Partita in A Minor, BWV 1013: II. Corrente
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Flute Partita in A Minor, BWV 1013: III. Sarabande
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Flute Partita in A Minor, BWV 1013: IV. Bouree Anglaise
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Airs et brunettes (version for flute solo): Brunette, L'autre jour ma Cloris
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Flute Sonata in A Minor, Wq. 132, H. 562: III. Allegro
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Flute Sonata in E Major, BWV 1035: II. Allegro
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Flute Music - Schubert, F. / Mozart, F. / Hummel, J. / Mendelssohn, Felix
12 Fantaisies: No. 2 in A Minor, TWV 40:3
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12 Fantaisies: No. 3 in B Minor, TWV 40:4
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12 Fantaisies: No. 4 in B-Flat Major, TWV 40:5
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12 Fantaisies: No. 6 in D Minor, TWV 40:7
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12 Fantaisies: No. 7 in D Major, TWV 40:8
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12 Fantaisies: No. 8 in E Minor, TWV 40:9
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Mozart: Flute Quartets KV 285 (a,b) 298, Andante KV314
Quartet for Flute and String Trio No. 1 in D major, K. 285: Allegro
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Orchestre de chambre Jean-François Paillard
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Oboe Sonata No. 2 in A Major, Op. 1 No. 2: I. Andante
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Oboe Sonata No. 2 in A Major, Op. 1 No. 2: II. Allegro con spirito
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Oboe Sonata No. 2 in A Major, Op. 1 No. 2: III. Adagio
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Oboe Sonata No. 2 in A Major, Op. 1 No. 2: IV. Allegro
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12 Sonatas, Book 1, No. 1 in B-Flat Major (Version for Oboe & Continuo): I. Adagio
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12 Sonatas, Book 1, No. 1 in B-Flat Major (Version for Oboe & Continuo): II. Vivace
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12 Sonatas, Book 1, No. 1 in B-Flat Major (Version for Oboe & Continuo): IV. Allegro
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Solo Sonata in E Minor (Version for Oboe & Continuo): I. Adagio
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Solo Sonata in E Minor (Version for Oboe & Continuo): II. Allegro
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Solo Sonata in E Minor (Version for Oboe & Continuo): III. Largo
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Solo Sonata in E Minor (Version for Oboe & Continuo): IV. Vivace
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Oboe Sonata in F Major, HWV 363a: IV. Bourrée
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Oboe Sonata in F Major, HWV 363a: V. Minuet
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Oboe Sonata in G Minor, Wq. 135: III. VIvace
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Concerts royaux, Suite No. 1 (Version for Oboe & Continuo): I. Prelude
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Concertos, Sonatas & Trio Sonatas for Wind Instruments: Vivaldi, Marcello, Platti, Handel, Telemann, Corelli, Hotteterre
Die Zauberflöte, K. 620: Ein Mädchen oder Weibchen (Arr. for Oboe & Orchestra by François Leleux)
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Lied ohne Worte in A Major, Op. 62, No. 6
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Orchestral Suite No. 2 in B Minor, BWV 1067: Minuet and Badinerie
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Sextet in D Major, B24: III. Rondo. Allegretto
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Cello Concerto in D Major, Badley D3: III. Allegro molto
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Simple Symphony, Op. 4: II. Playful Pizzicato
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Peer Gynt Suite No. 1, Op.46: I. Morning Mood
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Serenade No. 13 in G major, K. 525 "Eine kleine Nachtmusik": Rondo. Allegro
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Rondo a capriccio, Op. 129, "Die Wut über den verlorenen Groschen"
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String Quintet in E Major, Op. 11, No. 5, G. 275: III. Minuetto con un poco di moto - Trio
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Flute Concerto No. 2 in D Major, K. 314 (K. 285d): III. Rondeau. Allegro
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Sonata for Violoncello and Basso continuo in E Major: III. Siciliana
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Solomon, HWV 37: The Arrival of the Queen of Sheba
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Piano Quintet in A Major, D 667, "Forellenquintett": IV. Thema (Andantino) con variazioni
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Symphony No. 5 in C Minor, Op. 67: II. Andante con moto
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Serenade for Strings in C Major, Op. 48: Waltz
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Piano Concerto No. 21 in C Major, K. 467: II. Andante (Arranged for Violin & Orchestra)
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Le nozze di Figaro: Voi, che sapete (Arie des Cherubino)
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Piano Sonata No. 13 in A Major, D. 664, Op. 120: I. Allegro moderato
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Quintet in D Major, TWV 44:1: I. Sinfonia
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String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto
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String Quartet in F Major, Op. 3 No. 5, Hob. III:17: II. Serenade. Andante cantabile
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3 German Dances, K. 605: Organ Concerto No. 6 in B-Flat Major, Op. 4, HWV 294: III. Allegro moderato (Transcribed for Harp and Orchestra)
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King Arthur, Z. 628 "The British Worthy": Aire. Minuet
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Quatrième livre de quatuors (Paris, c.1752) No. 10: Quatrième Quatuor: I. Prélude: Vivement - Flatteusement
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Quadri (Hamburg 1730) No. 1: Concerto Primo: I. Grave - Allegro
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Quatrième livre de quatuors (Paris, c.1752) No. 10: Quatrième Quatuor: II. Coulant
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Quadri (Hamburg 1730) No. 1: Concerto Primo: II. Largo
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Nouveaux quatuors en six suites (Paris, 1738) No. 7: Premier Quatuor: II. Tendrement
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Quatrième livre de quatuors (Paris, c.1752) No. 10: Quatrième Quatuor: III. Gai
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Quadri (Hamburg 1730) No. 1: Concerto Primo: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4428a6f3c0dc1a065032288ec21f694761b7ab3f4011cf8c5ba2669dc60cd173. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701117 — a six-check JSON result.
Nouveaux quatuors en six suites (Paris, 1738) No. 7: Premier Quatuor: III. Vite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ed712c3eb8e52f3f978432b8be5507128304ab90d4453d8b2c9afe1d6fbae5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701145 — a six-check JSON result.
Quadri (Hamburg 1730) No. 1: Concerto Primo: IV. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbc634e0decc9d06825cfa48728037af964adb4ea079c75730be5ced3eb0e9d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701118 — a six-check JSON result.
Nouveaux quatuors en six suites (Paris, 1738) No. 7: Premier Quatuor: IV. Gaiment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a91cc0124ff6a955e25ced3f79c445e96b675f065a97c5c20f581c51b2ba4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701146 — a six-check JSON result.
Quadri (Hamburg 1730) No. 1: Concerto Primo: V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714bb29ddaed581353dbd0e5263dfb28bbb0c8ada696571ce4035392135340df. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701119 — a six-check JSON result.
Nouveaux quatuors en six suites (Paris, 1738) No. 7: Premier Quatuor: V. Modérément
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e62356065354c12088a46dc9725b800a0b2246d2d676af613a89fbb7131ba9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701147 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2999cf5b066cb8b22de88b593af27497defd64a7ee08e3fe963ddc4b687ad6b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701120 — a six-check JSON result.
Nouveaux quatuors en six suites (Paris, 1738) No. 7: Premier Quatuor: VI. Vite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab652dded62fb821a78dd7569eab0b6a85b188b16595f00d5e0e13f728726fb. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701148 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361bc1ab6187f2bd5e6b23d9493e39d80b77733268f1738d3bad4496f7531acb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701121 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246cc4cc164c846a72acff1a9e05ed27c77a863bc2450c155ed4d9b091db2dd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701149 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f98901ede22b077adb6a06f0595f670da2eaab2653692cd87499ac47050026. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701122 — a six-check JSON result.
No. 8: Deuxième Quatuor: II. Flatteusement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab22b2f4d31056dc118b921bb495d8c24e261049bdaed1a7f4ca080dfbb599eb. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701150 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdb0730efddecf7266e52d61d818ee288b25d69257a46fd8551ea2c7bddced4. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701123 — a six-check JSON result.
No. 8: Deuxième Quatuor: III. Légérement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae09d78c2b7f98dc8faf890f9c5a3bbf1733ea5aa1f683c81ca2131eea61a67. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701151 — a six-check JSON result.
No. 8: Deuxième Quatuor: IV. Un peu vivement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab0ec1ca8fe724c5d9f6324e014884c04b09d6ac59829c3266d802346f18505. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701152 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6577fb6132c3e78a3bdc2d5d510110ae008cda86eb49c55411cc6b51c808f523. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701124 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb735bfa598db7e1f835e20f49ba2d487e6eb5798e9c18afa94c38386cc888e77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701153 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffbc3f9ea252ae116c107d1f51e658503bf13f65052808d2c5b5e9f75cfbb17. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701125 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b73cdbf1dc7e5c06e50a08b176c0ea101987cd3dd51fc15f154dd58da25bd62. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701154 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510d799ebb6c7a2db835de74af6b46a62332c9674c195d6ec0a8c5417c834bd3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701126 — a six-check JSON result.
No. 9: Troisième Quatuor: I. Prélude: Un peu vivement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551ec9c7c51516920142f683d336ca026024a2f306f1ba2e54d0a95b409c8029. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701155 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ae0c0d34cd03d09bd9e973c0a35049952ec299c50f573ec494ba384a165633. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701127 — a six-check JSON result.
No. 9: Troisième Quatuor: II. Légérement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a53bb4ac9a00de0617e835aeaee11e6c883e1e4882828b3aaa37fdeee9eac5. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701156 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438aadedacdd6ea6e4952ef139d182899a05243eeeaaf8f16552d53d1c128865. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701128 — a six-check JSON result.
No. 9: Troisième Quatuor: III. Gracieusement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec18ffc78941f592e607dc281ddc396adfd8831ff028632ffd943664a51a7c50. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701157 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb095cb38a45b9a7dbdb8eaae5aa6e10aeb088ba56aed5b4699c1f3e7f5b986b5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701129 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684f27f5e93d649d03f8f920875adc07bb3319448cbf6d22718ab22154955d9a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701158 — a six-check JSON result.
No. 5: Première Suite: I. Prélude: Vitement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ddfe75b545dc0f121e2f93c6b37d58546d6912a947896c08ce8d2c8b85b503. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701131 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8798c24839e9ec131df8f0cba00af6c7364b5ceaea9180bc80ff54ef367ec. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701160 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cff577c16850b2472a75f443a070d628cb21b2d8bbac644870f78f3e76c2ef. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701132 — a six-check JSON result.
No. 9: Troisième Quatuor: VII. Lentement - vite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9130a86429dc92deb26bf3e8d572d4b905b1376359756d1994f081eb0c3dfb14. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701161 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0ebe926101436f4d5aa5151e35d577118a0a32b3cf016da7ccb5512f9dd838. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701133 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b4f4b0a2bfffbdf15be32ef09e130d9dcb2a9b8af10f16626cd912648c12e8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701134 — a six-check JSON result.
No. 5: Première Suite: V. Menuet I - Menuet II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c6fb1113e193d36160976b01045764b505d891683a4f228139e51c901488c1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701135 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcb71188630239dbacf13c9ffb33bd2bab509d1e563ded939c42e1a3bcce8e5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701137 — a six-check JSON result.
No. 6: Deuxième Suite: I. Prélude: Gaîment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b707a49fff8636e0a71c4a047303a7816bd703ee18582acf6a2368de072fd42. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701138 — a six-check JSON result.
No. 6: Deuxième Suite: II. Air: Modérément
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc76ee7bc1214e99072016f25a3ee43c6e99dc82041df7642a2b5231a6d8eb8c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701139 — a six-check JSON result.
No. 6: Deuxième Suite: III. Réjouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0405a55be5126fcc8afffaadf97d037d52ced47b01eddc2c8f623d5962da9ad2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701140 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb419ec2e04de23d6f6c4ebe02badcb457d51a8c1448d4b2e2dcd2c1bbef9df15. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701141 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7624c26564945d33c58220a9ad55365c1fe91832775e7a52de0ee2f43f863aae. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701142 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Ricercar a 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942e7f5665d17ea7331a8eae6cb48c26ea6370d46d28650b95d9616b8b6585ba. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE479502449 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Canon perpetuus super Thema Regium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10502b5e1c21c0658b52dfcef6eb45638de7075b4f8041d5504f59077cb3fba3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE479502450 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Canon a 2, cancrizans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0966fd56a0ce1bdd41b560c8f19e0eb2bc6f28e07efa5bfc8a2429c442ddff9e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE479502451 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Canon a 2, Violin: in Unisono
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac739c3eba3e3f67959c32d6497f63031f0595461c190bd19a396564d9f591. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE479502452 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Canon a 2, per Motum contrarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef84248f4df80f80e93f13d794dc93fc573e4cd0988b6a0502e993f54fe02e4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE479502453 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Canon a 2, per Augmentationem, contrario Motu ("Notulis crescentibus crescat Fortuna Regis")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a38c09d9a54bfc8eed9b4bed5d5159ca96828638ed18db0865e2ba0248dc6d. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE479502454 — a six-check JSON result.
Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Canon a 2, per Tonos ("Ascendenteque Modulatione ascendat Gloria Regis")
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Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Fuga canonica in Epidiapente
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Musikalisches Opfer (Musical Offering), BWV 1079: Canones diversi sopra Thema Regium: Ricercar a 6
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Musikalisches Opfer (Musical Offering), BWV 1079: Quaerendo invenietis: Canon a 2
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Musikalisches Opfer (Musical Offering), BWV 1079: Quaerendo invenietis: Canon a 4
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Musikalisches Opfer (Musical Offering), BWV 1079: Sonata sopr'il Sogetto Reale a Traversa, Violino e Continuo: Largo
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Musikalisches Opfer (Musical Offering), BWV 1079: Sonata sopr'il Sogetto Reale a Traversa, Violino e Continuo: Allegro
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Musikalisches Opfer (Musical Offering), BWV 1079: Sonata sopr'il Sogetto Reale a Traversa, Violino e Continuo: Andante
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Musikalisches Opfer (Musical Offering), BWV 1079: Canon perpetuus
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Flute Concertos & Sonatas: J. S. Bach, C. P. E. Bach, C. Stamitz, J. Stamitz, Gluck, Quantz and others
2 Arabesques, L. 66: No. 1 in E Major (Orchestrated by M. Colombier)
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Nocturne No. 20 in C-Sharp Minor, Op. posth (Arranged for Violin & Orchestra)
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