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 0xda8533153fa7aa3f057efa9da214801665e58c1690f1817fcdd34e5ff4101dce. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbfc3e79-bfb9-4dc5-aa75-8168897f486b.json and https://artists.proofprofile.net/proofs/artist/cbfc3e79-bfb9-4dc5-aa75-8168897f486b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x2f3e0c0ed926637ddc7429b05c9d51926aae5d76d3a6c28b37758eb1f6803416. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSJ10804227 — a six-check JSON result.
Concerto for 2 Violins, Strings and Continuo in D Minor, BWV 1043: I. Vivace
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The Seasons, Op. 37b: VI. June: Barcarolle
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfe52904694b02b75e73cf72b1bfa2b6db2e770ef3028599a01a659bd8e82ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSJ10804266 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c2d42b3bef56756ffe77b626d3e67ae73474266f17ec6179eeb2c6d0ebebeb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSJ10804275 — a six-check JSON result.
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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Piano Concerto No. 3 in D Minor, Op. 30, III: Finale: Alla breve
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Orchestra Sinfonica di Milano Giuseppe Verdi
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Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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The Four Seasons (Le Quattro Stagioni) Concerto for Violin in E Major, RV 269, Op. 8: 1. "Spring": I. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9469540fa9b9b40383bc5e9645440276906085b84db17cfc2a5ec32ca763945. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSJ10804245 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cef55a442e88d14b47ba042a0ea92c2996a5e7a8edb4a7f0d034050c87d0794. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSJ10804256 — a six-check JSON result.
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Clarinet Concerto in A Major, KV 622: II. Adagio
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Bagatelle in A Minor, WoO 59 "Für Elise"
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String Quartet No. 1 In B-Flat Major, Op. 1: III. Adagio
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Swan Lake Suite, Op. 20: Scéne: Moderato
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The Marriage of Figaro, KV 492: Overture
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Requiem Mass in D Minor, K. 626: VIII. Lacrimosa
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Mass in B Minor, BWV 232, Credo: VI. Et resurrexit
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Peer Gynt, Suite No. 1, Op. 46: IV. In the Hall of the Mountain King: Alla marcia e molto marcato: Piu ivo
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Mascagni - Cavalleria rusticana: Intermezzo
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio Cantabile
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Quintet in A Major, Op. 114 "The Trout": II. Andante
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Etude in E Major, Op. 10, No. 3, "Tristesse"
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Brandenburg Concerto No. 5, BWV 1050: I. Allegro
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Well Tempered Clavier, Book I, BWV 846, Prelude and Fugue in C Major
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Concerto for Trumpet and Orchestra in E-Flat Major, III. Rondo
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. Allegro
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Piano Concerto No. 2 in C Minor, Op. 18: I. Moderato; Allegro
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Concerto Grosso in G Minor, Op. 6: 8 "Christmas Concerto": II. Allegro
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Symphony No. 5 in C Minor, Op. 67, "Fate": I. Allegro con Brio
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Serenade for Strings in C Major, Op. 48: III. Élégie: Larghetto elegiaco
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Concerto for Viola and Orchestra in G Major: I. Largo
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Rhapsody on a Theme of Paganini in A Minor for Piano & Orchestra, Op. 43
USSR Ministry Of Culture Symphony Orchestra
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"Jesu, Joy of Man's Desiring" from Mund und That und Leben BWV 147
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Concerto for Piano and Orchestra No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
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Symphony No. 6 in F Major, "Pastoral", Op. 68: II. Scene by the Brook - Andante molto mosso
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Suite No. 1 in G Major, BWV 1007: I. Prelude
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Hungarian Dances: No. 5 in G Minor: Allegro
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Symphony No. 94 in G Major, "Surprise": II. Andante
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On the Beautiful Blue Danube (An Der Schönen Blauen Donau), Op. 314
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Symphony No. 40 in G Minor, K. 550 "Great": I. Allegro molto
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Piano Concerto No. 2 in F Minor, Op. 21: III.Allegro vivace
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27: 2 "Moonlight": I. Adagio Sostenuto
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Serenade No. 13 in G Major, K. 525 "Eine Kleine Nachtmusic": I. Allegro
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Violin Concerto in D Major, Op. 61: III. Rondo. Allegro
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100 Most Relaxing Classical Music In The Universe
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The Merry Widow: "Lippen schweigen" (Orchestral)
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The Four Seasons, Concerto No. 4 In F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
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Violin Concerto in D, Op. 77 - II. Adagio
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Piano Concerto In A Minor, Op. 16: II. Adagio
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Serenade No. 13 in G, 'Eine Kleine Nachtmusik' K. 525: II. Romanze (Andante)
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Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
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Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
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Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
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Preludes, Op. 28 No. 15 In D-Flat Major "Raindrop" - Sostenuto
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Variations On An Original Theme, 'Enigma', Op. 36: VIII. W.N. (Allegretto) - IX. Nimrod (Adagio)
Koninklijk Filharmonisch Orkest van Vlaanderen
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Piano Concerto No. 21 In C K. 467: II. Andante
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Sleepers, Wake! (Wachet Auf, Ruft Uns Die Stimme )
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Water Music Suite No. 1 In F Major, HV 348: V. Air
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Well Tempered Klavier, Book I, No. 22 BWV 867
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The Four Seasons: Concerto No. 1 In E Major, Op. 8, RV 269, "Spring": I. Allegro (Danza Pastorale)
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Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
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Piano Concerto No. 20 In D Minor K. 466: II. Romanze (Excerpt)
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Cantata No. 147: Jesu, Joy Of Man's Desiring
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Liebestraum No. 3 In A-Flat Major, Op. 62
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Flute And Harp Concerto In C K. 299 / 297C: II. Andantino
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Piano Concerto No. 1 in B-Flat Minor, Op. 23: II. Andantino semplice - Prestissimo - Tempo I
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Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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Serenade For Strings In E Major, Op. 22: I. Moderato
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Clarinet Concerto In A K. 622: II. Adagio
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Violin Concerto In D Major, Op. 35: II. Canzonetta, Andante
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Symphony No. 3 in F Major, Op, 90: III. Poco allegretto
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2 "Moonlight": I. Adagio Sostenuto - Excerpt
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Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": IV. Rondo - Allegro Ma non Troppo
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Violin Concerto in D Major, Op. 61 (Cadenzas by Vasa Prihoda): III. Rondo (Allegro)
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Piano Sonata No. 17 in D Minor, Op. 31, No. 2 "Tempest": III. Allegretto
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Cello Sonata No. 2 in G Minor, Op. 5, No. 2: I. Adagio Sostenuto Ed Esspresivo
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Concerto for Piano and Orchestra No. 5 in E Flat Major, 'Emperor', Op. 73: I. Allegro
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Violin Sonata No. 2 in A Major, Op. 12, No. 2: I. Allegro Vivace
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Concerto for Piano and Orchestra No. 5 in E Flat Major, 'Emperor', Op. 73: II. Adagio un poco Mosso
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Violin Sonata No. 3 in E-Flat Major, Op. 12, No. 3: II. Adagio con Molt'espressione
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Concerto for Piano and Orchestra No. 5 in E Flat Major, 'Emperor', Op. 73: III. Rondo (Allegro)
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Violin Sonata No. 4 in A Minor, Op. 23: I. Allegro Molto
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Schumann: Bride From Messina Overture and Other Orchestral Works
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Berlioz: Symphony Fantastique - Roman Carnival Overture - The Secret Judge Overture
Symphony Fantastique in C Major, Op 14: II. Un Bal - Allegro non troppo
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Symphony Fantastique in C Major, Op 14: III. Scene aux champs - Adagio
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Symphony Fantastique in C Major, Op 14: IV. Marché au supplice - Allegro non troppo
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Symphony Fantastique in C Major, Op 14: V. Songe d' une nuit du Sabbat
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Symphony No. 4 in D Major: III. Finale: vivace
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Mozart: Piano Concertos - Vol. 2 - Nos. 12, 13 & 14
Concerto for Piano and Orchestra No 12: III.
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The Most Relaxing Classical Music for Weddings In the Universe
J. Strauss II: Liebeslieder Waltz, Op. 114
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Paganini: Violin Concertos Nos. 1 & 2, "La Campanella"
Violin Concerto No. 2 in B Minor, Op. 7: I. Allegro maestoso
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Violin Concerto No. 2 in B Minor, Op. 7: II. Adagio
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More of the Most Romantic Classical Music in the Universe
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Handel: Water Music Suites 1 & 2 - Fireworks Music Suite
Mendelssohn Incidental Music from Midsummer Nights Dream
Mendelssohn: A Midsummer Night's Dream, Op. 61 Incidental Music: No. 7 Notturno
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Debussy: Prelude to the Afternoon of a Faun - Scottish March - Claire de Lune - La Mer
Brahms: Violin Concerto Op. 77, Violin & Cello Concerto Op. 102
Mendelssohn: A Midsummer Night's Dream Overture - Hebrides Overture - Other Orchestral Works
Haydn: Symphonies Nos. 73 "La chasse (The Hunt)"- 80 - 92 "Oxford"
Franck: Symphony in D - Symphonic Variations - Violin Sonata