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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05f83dd380b2957b0ac7ad4d61a0eebb1ce7adc318cf1417edf4171751ba6b1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9e9f718-ef10-4dd7-86f6-4ec070330cb3.json and https://artists.proofprofile.net/proofs/artist/a9e9f718-ef10-4dd7-86f6-4ec070330cb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shostakovich: Suite for Jazz Orchestra No. 2, Op. 50b: No. 2, Waltz
Orchestre Philharmonique de Radio France
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1e03ee4198a3393e95b75f0cdcda3c3f36930f1ab2e0e83a69d28e171b5e7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0302503.
Beethoven: Violin Concerto in D Major, Op. 61: II. Larghetto
The Orchestra National De La Radiodiffusion Francaise
Orchestre National Radiodiffusion Française
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda7f2ea9c686c70d7b5981aed9b846c7fb540efd78094187d309f58003c298. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA809222000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd796f2208e91703cb66df9b2982d34c345e1ce8a094a6739a447a23c5f0968f3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8601453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa882436ae2d3f95fbc7a9514718899ea1b40be6f7f8237c838e019b03a53a306. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYE7100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275207273664437828096a387800d3d1b3fd619edb0b6bb2f7e4aa724368d8c6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8500291.
Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347352e6d8e682e3ae7a735e4ff8c989eba219ecf58634194bcb9cd2aaa5063b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0704072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead73045e1a9c085c973a56fefe56cc75f74c3f35e0eaccb33eacac161ec70c1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD9800299.
Puccini: Tosca, Act 3: "E lucevan le stelle" (Cavaradossi)
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Verdi: La traviata, Act 1: "Sempre libera" (Violetta, Alfredo)
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Vivaldi: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbfdc326c9e98937c7e52461847d112a7d62a4b9351eba98af84c2f01734ad9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1502801.
Concerto for Strings in A Major, RV. 158: I Allegro molto
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Concerto for Strings in A Major, RV. 158: III Allegro
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Violin Concerto in E-Flat Major, RV 253 "La tempesta di mare": I. Presto
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Violin Concerto in E-Flat Major, RV 253 "La tempesta di mare": II. Largo
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Violin Concerto in E-Flat Major, RV 253 "La tempesta di mare": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5e8f08b015cb679afdde4a9ed9cd3e741c209ba864ead8cd5ae1f69a179ced. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0704566.
Violin Concerto No. 3 in F Major, RV 293 "Autumn": I. Allegro
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Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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Violin Concerto No. 4 in F Minor, RV 297 "Winter": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2daa63cb4e64db44c473a5a7783b9129d8ab1386ac3d5bac9e6a9450b9a3a2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0704562.
The Four Seasons, Violin Concerto No. 2 in G Minor, RV 315 "Summer": III. Allegro
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Violin Concerto in A Major, RV 345: I. Allegro
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Concerto for 2 Violins in A Minor, RV 522: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0852a70cc721b1a216a46838472379a49e449098dc1e12cebe5d67e5127eac20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1502811.
Concerto for 4 Violins in E Minor, RV 550: I. Andante
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Concerto for 3 Violins in F Major, RV 551: III. Allegro
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Tchaikovsky: The Nutcracker, Op. 71: Miniature Overture
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Handel: Messiah, HWV 56, Pt. 1, Scene 3: Chorus. "For Unto Us a Child Is Born"
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Tchaikovsky: The Nutcracker, Op. 71, Act II: No. 14c, Pas de deux. Variation II "Dance of the Sugar Plum Fairy" & No. 14d, Pas de deux. Coda
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Tchaikovsky: The Nutcracker, Op. 71, Act II: No. 13, Waltz of the Flowers
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Delius: 3 Small Tone Poems: No. 2, Sleigh Ride
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Schubert: Ave Maria, Op. 52 No. 6, D. 839 (Orchestral Version)
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Violin Concerto No. 1 in E Major, RV. 269, Op. 8 No. 1 'La primavera': I. Allegro
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Canon and Gigue in D Major, P. 37: I. Canon
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bd589536d4b9eda69ca7b7333ac32e8c9ee8d141a741cef671e5f6ce77bcf6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1502815.
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Family Portrait (From "Harry Potter and the Philosopher's Stone")
Die 12 Cellisten der Berliner Philharmoniker
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The City of Prague Philharmonic Orchestra
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": Adagio sostenuto (Excerpt)
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Wachet auf, ruft uns die Stimme, BWV 140: IV. Zion hört die Wächter singen
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Three Small Tone Poems, RT VI/7: No. 2, Winter Night (Sleigh Ride)
The Nutcracker, Op. 71, Act II: No. 13, Waltz of the Flowers
Men of Goodwill: Variations on a Christmas Carol
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Messiah, HWV 56, Pt. 1: For unto us a child is born
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Concierto de Aranjuez, Op. 30: II. Adagio
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Concierto de Aranjuez, Op. 30: III. Allegro gentile
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Monti: Csárdás (Arr. Berthollet for 2 Violins and Piano)
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Gounod: Ave Maria (After Bach's Prelude, BWV 846) [Arr. Berthollet for Piano Trio]
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Rimsky-Korsakov: The Tale of Tsar Saltan, Act 3: The Flight of the Bumblebee (Orch. Sándor)
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Paganini: Violin Concerto No. 2 in B Minor, Op. 7: III. Rondo "La campanella" (Arr. Kreisler for Violin and Piano)
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Delibes: Lakmé, Act 1: Duo des fleurs (Instrumental Version)
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
String ensemble of the Orchestre National du Capitole de Toulouse
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Popper: Hungarian Rhapsody, Op. 68 (Arr. Berthollet for Cello and Piano)
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Chopin: Nocturne No. 20 in C-Sharp Minor, Op. Posth. (Arr. Berthollet for Violin and Piano)
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La valse des noces (Arr. Samuel Pegg d'après Le Beau Danube bleu, Op. 314 de Johann Strauss II)
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Joplin: The Entertainer (Arr. Berthollet for 2 Violins and Piano)
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Schubert: Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: II. Andante con moto
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Kreisler: 3 Old Viennese Dances: No. 2, Liebesleid
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Brahms: 21 Hungarian Dances, WoO 1: No. 5 in F-Sharp Minor (Orch. Bouchard)
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Schubert: Schwanengesang, D. 957: No. 4, Ständchen (Version for Violin and Piano)
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Le ballet des épousailles (Arr. Martin Batchelar d'après l'ouverture de Guillaume Tell de Gioacchino Rossini)
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Vivaldi: L'estro armonico, Op. 3: Concerto No. 10 for Four Violins in B Minor, RV 580: I. Allegro
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Dvořák: Rondo for Cello and Orchestra in G Minor, Op. 94, B. 181
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Gluck: Orfeo ed Euridice, Wq. 30, Act 2: Dance of the Blessed Spirits (Arr. Kreisler for Violin and Piano)
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Tchaikovsky: 6 Pieces, Op. 51: No. 6, Valse sentimentale (Arr. Berthollet for Cello and Piano)
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Halvorsen: Passacaglia for Violin and Cello (After Handel's Keyboard Suite, HWV 432)
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Le cortège (Arr. Samuel Pegg d'après la Danse macabre, Op. 40 de Camille Saint-Saëns)
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Piazzolla: Libertango (Arr. Berthollet for 2 Violons and Piano)
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Vivaldi: L'estro armonico, Concerto for Two Violins in A Minor, Op. 3 No. 8, RV 522 "Per eco in lontano": III. Allegro
Bach, JS: Concerto for Two Violins in D Minor, BWV 1043: I. Vivace
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Fauré: 3 Mélodies, Op. 7: No. 1, Après un rêve (Arr. for Cello and Piano)
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Alkan: Concerti da Camera and Solo Music
String Quartet in D Minor, D. 810 "Der Tod und das Mädchen": II. Andante con moto
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Beethoven: Concerto pour violon et orchestre en Ré majeur, Op. 61 (Live)
Piotr Ilitch Tchaikovsky : Souvenir de Florence (Live Clermont-Ferrand)
Serenade pour cordes in E Major, Op. 22: II. Tempo di valse
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Sérénade pour orchestre à cordes in C Major, Op. 48: II. Valse moderato
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Betsy Jolas, Side Roads, Thierry Escaich: Prélude symphonique
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Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio
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Bechet: Petite Fleur (Transcr. for Clarinet & Piano)
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Shostakovich / Transcr. Walter for Orchestra: Suite for Jazz Orchestra No. 2, Op. 50b: No. 2, Waltz
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Morricone: Gabriel's Oboe (From "The Mission") [Transcr. Longfield for Clarinet & Orchestra]
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Rota: Trio for Clarinet, Cello & Piano: II. Andante
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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Orfeo ed Euridice, Wq 30, Act II: Dance of the Blessed Spirits
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. (No Tempo Marking)
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Violin Concerto in D Major, Op. 61: I. Allegro ma non troppo
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21 Hungarian Dances, WoO. 1: No. 4, Poco sostenuto in F Minor
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Toccata & Fugue in D Minor, BWV 565 (Excerpt)
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Purcell: King Arthur, Z. 628, Act 3: "What power art thou" (Cold Genius)
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Purcell: King Arthur, Z. 628, Act 3: "What power art thou" (Cold Genius) [Version for Counter-Tenor & Organ] - 2
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Nocturnes, Op. 9: No. 2, Andante in E-Flat Major
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The German Masters - A Complete Selection
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Three Gymnopedies: I. Lent et douloureux
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Les Contes d'Hoffmann, Act III: Barcarolle
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The Four Seasons of Camille & Julie (UK Version)
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