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 0xd19abd4cf03ea959858335547da9d56aac7e5c2f558d33314a64e216482988b1. 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/d75cf40e-1fdd-4936-9de5-ccf801f46cb6.json and https://artists.proofprofile.net/proofs/artist/d75cf40e-1fdd-4936-9de5-ccf801f46cb6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Martinon Conducts Berlioz (Live) [Remastered 2022]
Orphée et Eurydice, Act III: "J'ai perdu mon Eurydice"
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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Rivier: Symphonies Nos. 3 & 5 (Mono Version)
Loucheur: Rapsodie malgache & Hop-Frog (Mono Version)
Brahms: Double Concerto for Violin, Cello and Orchestra in a Minor, Op.102, Violin Concerto in D Minor, Op.77 (Recorded 1949 & 1951)
Tchaikovsky: Piano Concerto No. 1 in B-Flat Minor, Op. 23, TH 55 - Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18 (Remastered 2023)
A Portrait, Vol. 1: Jascha Horenstein (Remastered 2022) [Live]
Milestones of a Piano Legend: Magda Tagliaferro, Vol. 4
Georges Bizet: Carmen (Οpera in Four Acts) Vol. 1
Georges Bizet : Carmen (Οpera in Four Acts) Vol. 2
Orchestre National de la Radiodiffusion Française / Louis Fourestier play: Edouard Lalo: Namouna, Suites n°1 et n°2 & Le Roi d'Ys
Orchestre National de la Radiodiffusion française / Pierre Monteux play: Edward Elgar: Variations on an Original Theme 'Enigma' - pour orchestre, op. 36
Villa-Lobos: Bachianas Brasileiras Nos. 1, 2, 5 & 9
Villa-Lobos: Symphony No. 4, Piano Concerto No. 5, Momoprécoce & Chôros No. 5
Masterpieces Presents Claude Debussy: La Mer & Images pour Orchestre
Bizet: Symphony in C Major, L'Arlésienne, Suites Nos. 1 & 2
Beethoven: Violin Concerto in D Major, Op. 61 (Remastered)
Brahms: Violin Concerto in D Major, Op. 77
The Greatest Classical Masterpieces, Vol. 13
Bizet: Symphony in C Major & L'Arlesienne Suites Nos. 1 & 2
Robert Casadesus plays Mozart (1958-1969)
Jascha Horenstein: Broadcast Performances from Paris, 1952-1966
La découverte du Brésil (Descobrimento do Brasil) - Première Suite : Introduçao - Alegria
Heitor Villa Lobos - Orch National Radiodiffusion F
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Villa-Lobos: Bachianas brasileiras No. 4, W424: I. Prelúdio (Orchestral Version)
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Orquestra Nacional da Radiofusao Francesa
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Mozart: Violin Concerto No. 3 - Beethoven: Violin Concerto in D Major
Violin Concerto No. 3 in G Major, K. 216: I. Allegro - Cadenza by Oistrakh
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Violin Concerto No. 3 in G Major, K. 216: II. Adiago - Cadenza by Oistrakh
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Violin Concerto in D Major, Op. 61: II. Larghetto
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Lalo: Symphonie Espagnole, Symphony in G Minor
Mussorgsky: Boris Godunov (Christoff, Gedda) (1952)
Shostakovich: Piano Concertos, Three Fantastic Dances, Preludes & Fugues.
Shostakovich: Concerto for Piano, Trumpet and String Orchestra No. 1 in C Minor, Op. 35: I. Allegretto
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Shostakovich: Concerto for Piano, Trumpet and String Orchestra No. 1 in C Minor, Op. 35: II. Lento
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Shostakovich: Concerto for Piano, Trumpet and String Orchestra No. 1 in C Minor, Op. 35: III. Moderato
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Shostakovich: Concerto for Piano, Trumpet and String Orchestra No. 1 in C Minor, Op. 35: IV. Allegro con brio
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Shostakovich: Piano Concerto No. 2 in F Major, Op. 102: I. Allegro
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Shostakovich: Piano Concerto No. 2 in F Major, Op. 102: II. Andante
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Shostakovich: Piano Concerto No. 2 in F Major, Op. 102: III. Allegro
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Shostakovich: 3 Fantastic Dances, Op. 5: I. Allegretto
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Shostakovich: 3 Fantastic Dances, Op. 5: II. Andantino
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Shostakovich: 3 Fantastic Dances, Op. 5: III. Allegretto
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Shostakovich: 24 Preludes and Fugues, Op. 87: No. 1 in C Major, Moderato
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Debussy: La mer, Nocturnes, Ibéria & Prélude à l'après midi d'un faune
Saint-Saëns: Samson et Dalila, Op. 47, Act 2: "Mon cœur s'ouvre à ta voix" (Dalila)
Classical Music: The Greatest Love Themes
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Carmen, WD 31, Act I: No. 5, Habanera, L'amour est un oiseau rebelle
Choeurs National de la Radiodiffusion Française
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Piano Concerto No. 23 in A Major, K. 488: I. Allegro
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Piano Concerto No. 24 in C Minor, K. 491: I. Allegro
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The Classic Experience - 135 of the greatest classical tracks
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