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 0x2493f64e771015bd839c7bb877c5f4bcb5648721c29d2b7cffd94021e0f6c9e9. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/774bb2ce-c92d-4b45-8fb4-f7fb4d1086d9.json and https://artists.proofprofile.net/proofs/artist/774bb2ce-c92d-4b45-8fb4-f7fb4d1086d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flute Concerto in D Major, RV 428 "Il Gardellino": I. Allegro
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfad64643b1ce73e126da859bb61a86f1d1e32fded44c7000026172f1acb07a1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITL732200129.
Flute Concerto in D Major, RV 428 "Il Gardellino": II. Cantabile
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Flute Concerto in D Major, RV 428 "Il Gardellino": III. Allegro
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Concerto for Strings in A Major, RV 158: I. Allegro molto
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Don Giovanni, Act I: "Là ci darem la mano" (Don Giovanni, Zerlina)
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Classic for You: Vivaldi - Konzerte für Oboe, Flöte und Cello
Classic for You: Vivaldi - Violinkonzerte
Classic for You: Mozart - Violinkonzerte No. 3 und No. 5
Classic for You: Mendelssohn - Symphonies No. 7 & 9
Classic for You: Haydn - Symphonies No. 26, 44 und 49
Classic for You: Gershwin: Klavierkonzert - Rossini: Ouvertüren
Classic for You: Brahms - Serenade No. 1
Classic for You: Bach - Orchestersuite No. 4
Classic for You: Albinoni - Symphonien und Sonaten
Classic for You: Vivaldi - String Concertos
Konzert No. 11 für Streichorchester in G Major, RV 151 " Alla Rustica " : I. Presto
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Handel: Water Music Suites... Music for the Royal Fireworks... (Musica Classica - I Capolavori...)
Gershwin: Concerto in FA Maggiore... Rapsodia in Blu, Un Americano a Parigi... (Musica classica - i capolavori...)
Handel: Concerti... (Musica Classica - I Capolavori...)
Franz Schubert: Sinfonie... (Musica Classica - I Capolavori...)
Haydn: Sinfonie... Quartetto d'Archi... (Musica Classica - I Capolavori...)
W. A. Mozart : Requiem Kv. 626 / Eine Kleine Nachtmusik divertimenti / Concertos for Flute, Harp and Orchestra / Concertos for Violin and Orchestra 3-5
Concerto for Flute and Orchestra In G Major, Kv. 313. Allegro maestoso
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Concerto for Flute, Harp and Orchestra In C Major, Kv. 299. Allegro
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Concerto for Flute, Harp and Orchestra In C Major, Kv. 299. Rondò : Allegro
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Concerto For Flute And Orchestra In C Major, KV315. Andante - Composed By: Wolfgang Amadeus Mozart
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Cantate BWV 140 - 'Wachet Auf' - Composed By: Johann Sebastian Bach
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Concerto For Flute And Orchestra. Rondò, Tempo Di Minuetto - Composed By: Wolfgang Amadeus Mozart
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Swan Lake Suite, Op. 20a: III. Dance of the Swans
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The Seasons, Op. 37a: VI. June, Barcarolle
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Swan Lake, Ballet Suite, Op. 20a: I. Scène
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Swan Lake, Ballet Suite, Op. 20a: III. Dance of the Swans
The Nutcracker, Op. 71, Act II: XIV. Waltz of the Flowers
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Violin Concerto in D Major, Op. 35: I. Allegro moderato - Moderato assai
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Piano Concerto No. 1 in B-Flat Minor, Op. 23c: I. Allegro non troppo e molto maestoso - Allegro con spirito
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Romeo and Juliet (Fantasy Overture), TH 42
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Suite Bergamasque, L. 75: III. Clair de lune
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Nocturnes, Op. 15: No. 2, Larghetto in F-Sharp Major
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Violin Concerto in G Minor, BWV 1056R: II. Arioso, Largo
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Symphony No. 6 in F Major, Op. 68 "Pastoral": I. Awakening of Cheerful Feelings on Arrival in the Countryside (Allegro ma non troppo)
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Violin Concerto in D Major, Op. 35: II. Canzonetta. Andante
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Romance No. 2 in F Major for Violin and Orchestra, Op. 50
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Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst
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Cello Suite No. 1 in G Major, BWV 1007: II. Allemande
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Clarinet Quintet in A Major, K. 581: I. Allegro
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Romance No. 1 in G Major for Violin and Orchestra, Op. 40
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String Quartet No. 1 in D Major, Op. 11: II. Andante cantabile
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Jeux d'enfants, Op. 22: XI, Petit mari, Petite femme!
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Deux arabesques, L. 66: No. 1, Andantino con moto in E Major
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Piano Concerto No. 2 in B-Flat Major, Op. 19: II. Adagio
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Orpheus and Eurydice, Wq. 41, Act II: Dance of the Blessed Spirits
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Academic Festival Overture in C Minor, Op. 80
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Violin Concerto in E Minor, Op. 64: I. Allegro molto appassionato
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Divertimento in B-Flat Major for Strings, K. 137 "Salzburg Symphony No. 2": I. Andante
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4 Romantic Pieces, Op. 75: I. Allegro moderato
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Slavonic Dances, B. 147: No. 2, Dumka (Allegretto grazioso)
Rheinland-Pfalz State Philharmonic Orchestra
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Symphony No. 9 in E Minor, Op. 95 "From the New World": I. Adagio. Allegro molto
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Symphony No. 9 in E Minor, Op. 95 "From the New World": II. Largo
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Symphony No. 9 in E Minor, Op. 95 "From the New World": III. Scherzo, molto vivace
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Symphony No. 9 in E Minor, Op. 95 "From the New World": IV. Allegro con fuoco
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Beethoven: Concerti... Sonate... (Musica Classica - I Capolavori...)
Bach: Suites... (Musica classica - i capolavori...)
Bach: Concerti, Vol. 3 (Musica classica - i capolavori...)
Triplo concerto per flauto, violino, archi e clavicembalo in A Minor, BWV1044: III. Alla breve
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Concerto per clavicembalo No. 1 in D Minor, BWV1052: I. Allegro
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Ludwig Von Beethoven: Concertos For Piano And Orchestra
Vivaldi: Sinfonia in B Minor, RV 169 "Al Santo Sepolcro"
Sinfonia in B Minor, RV 169 "Al Santo Sepolcro": I. Adagio molto
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Sinfonia in B Minor, RV 169 "Al Santo Sepolcro": II. Allegro ma poco
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The Essential Classical Masterpieces, Schubert Greatest Compositions
Swan Song, D. 957: No. 4, Standchen - Arranged for Orchestra
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Fantasi in F Minor, Op. 103, D. 940: I. Allegro molto moderato
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Fantasie in F Minor, Op. 103, D. 940: II. Largo
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Classical Music Workout: 20 Songs for Exercise, Running, Lifting, Cardio, Strength & More with Bach, Beethoven, Mozart, Vivaldi, Carmina Burana, Ride of the Valkyries & More!
Also sprach Zarathustra: I. Introduction, or Sunrise
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The Planets, Op. 32: I. Mars, the Bringer of War
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The Four Seasons, Op. 8, Concerto No. 2 in G Minor, RV 315 "Summer": III. Presto
Chamber Orchestra of St. Petersburg Philharmonic
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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Die Walküre, Act III: Ride of the Valkyries
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Requiem in D Minor, K. 626, III. Sequentia: Lacrimosa
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Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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The Nutcracker, Op. 71, Act II: 12d. Trepak (Russian Dance)
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Pictures at an Exhibition: XV. The Great Gate At Kiev
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Symphony No. 40 in G Minor, K. 550: I. Molto allegro
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Swan Lake, Op. 20, Act II: No. 10. Scène - Moderato
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Messiah, HWV 56, Part II: 44. Hallelujah
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The Very Best of Musical (30 Musicals That Made History)
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Don't Cry for Me Argentina - Theme From "Evita"
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Singing in the Rain - Theme From "Singing In The Rain"
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Moments musicaux, D. 780: No. 2, Andantino in A-Flat Major
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Moments musicaux, D. 780: No. 3, Allegro moderato in F Minor
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4 Impromptus, D. 899: No. 3, Impromptu in G-Flat Major
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4 Impromptus, D. 935: No. 1, Impromtu in F Minor (Allegro moderato)
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4 Impromptus, D. 935: No. 2, Impromptu in A-Flat Major
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Vier Impromptus, D. 935: No. 3, Impromptu in B-Flat Major (Andante)
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Symphony No. 1 in D Major, D. 82: II. Andante
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Symphony No. 5 in B-Flat Major, D. 485: II. Andante con moto
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Symphony No. 5 in B-Flat Major, D. 485: III. Menuetto - Trio
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String Quartet No. 10 in E-Flat Major, D. 87: III. Adagio
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Trout Quintet, D. 667: IV. Tema con variazioni (Andantino)
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Rondeau brilliant in B Minor for Piano and Violin, D. 895
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Sonata in A Minor for Arpeggione and Piano, D. 821: II. Adagio
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Rosamunde Ballet Music, D. 797: IX. Ballett (Andantino)
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Piano Sonata in A Major, D. 959: II. Andantino (Live)
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