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 0x3438d7c5fcc38fcf09a34a476d8e05862654b6514f1fa21a1df37ed75d89069e. 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/fd528b54-c5ec-4c46-bd1a-f1ac799f33bb.json and https://artists.proofprofile.net/proofs/artist/fd528b54-c5ec-4c46-bd1a-f1ac799f33bb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Vocal Recital: Gigli, Beniamino - Toselli, E. / Crescenzo, V. De / Donaudy, S. (Archivio Della Romanza Da Salotto Italiana, Vol. 2) (1926-1947)
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 0xb7b42c5a98ad965c218991094faa8a9d31bce2a58b06a5c307f1036e182f1344. 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/USB8U1004758 — a six-check JSON result.
Rubbra: Improvisations on Virginal Pieces by Giles Farnaby, Op. 50: No. 4, Loth to depart
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Elgar: Cockaigne Overture, Op. 40 "In London Town"
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Elgar: Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
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Elgar: Cello Concerto in E Minor, Op. 85: II. Lento - Allegro molto
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Elgar: Cello Concerto in E Minor, Op. 85: III. Adagio
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Elgar: Cello Concerto in E Minor, Op. 85: IV. Allegro - Allegro ma non troppo
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Elgar: Sea Pictures, Op. 37: No. 1, Sea Slumber-Song
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Elgar: Sea Pictures, Op. 37: No. 2, In Haven. Capri
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Elgar: Sea Pictures, Op. 37: No. 3, A Sabbath Morning at Sea
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Elgar: Sea Pictures, Op. 37: No. 4, Where Corals Lie
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Elgar: Sea Pictures, Op. 37: No. 5, The Swimmer
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Lauritz Melchior, The King Size Hero, Vol. 3 (Recordings 1920-1947)
Beniamino Gigli, Vol. 5 (Recordings 1925-1939)
The Beniamino Gigli Collection, Vol. 5: True Belcanto in Opera and Songs (Recordings 1927-1949) [2014 Digital Remaster]
Elgar Rediscovered: An Anthology of Forgotten Recordings
Mahler: Symphony No.6 - R. Strauss: Ein Heldenleben
Elgar: Variations on an Original Theme, Op. 36 "Enigma": Theme
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Brahms: Variations on a Theme by Haydn, Op. 56a "St. Antoni Chorale": Variation III. Con moto
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Mahler: Rückert Lieder: No. 2, Ich atmet' einen linden Duft!
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Benjamin & Cimarosa: Oboe Concerto in C Minor: I. Introduzione. Larghetto
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Handel / Arr. Hoffmann: Suite from Serse, HWV 40: II. Largo. "Ombra mai fù"
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Brahms: Variations on a Theme by Haydn, Op. 56a "St. Antoni Chorale": Thema. Chorale St. Antoni
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Strauss, Johann I / Arr. Jacob : Radetzky-Marsch, Op. 228
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Elgar: Introduction and Allegro, Op. 47: I. Moderato
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Vaughan Williams: Symphony No. 8 in D Minor: II. Scherzo alla marcia, per gli stromenti a vento
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Tchaikovsky: Serenade for Strings in C Major, Op. 48: II. Valse. Moderato
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Grieg: Suite No. 1 from Peer Gynt, Op. 46: I. Morning Mood
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Elgar: Variations on an Original Theme, Op. 36 "Enigma": Variation IX. Adagio "Nimrod"
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Dvorak: Serenade for Wind Instruments in D Minor, Op. 44, B. 77: I. Moderato, quasi marcia
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Franck: Symphonic Variations for Piano and Orchestra, FWV 46: IV. Allegro non troppo
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Vaughan Williams / Orch. Greaves: Fantasia on Greensleeves
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Puccini: Madama Butterfly, Act II: "Un bel dì vedremo" (Butterfly)
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Berlioz: La Damnation de Faust, Op. 24, H 111: Marche hongroise
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Marcello: Oboe Concerto in D Minor: II. Adagio (Performed in C Minor)
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Grieg: Piano Concerto in A Minor, Op. 16: II. Adagio
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Mahler: Kindertotenlieder: No. 2, Nun seh' ich wohl, warum so dunkle Flammen
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Sibelius: 2 Pieces from Kuolema, Op. 44: No. 1, Valse triste
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Glazunov: Violin Concerto in A Minor, Op. 82: IV. Animando
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Haydn: Cello Concerto No. 2 in D Major, Hob. VIIb:2: III. Rondo. Allegro - Cadenza
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Brahms: Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
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Elgar: Pomp and Circumstance Marches, Op. 39: No. 1 in D Major
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Debussy: La Mer, CD 111, L. 109: II. Jeu de vagues
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Debussy: Nocturnes, CD 98, L. 91: No. 2, Fêtes
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Strauss, Johann II: Die Fledermaus: Overture
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Wieniawski: Violin Concerto No. 2 in D Minor, Op. 22: I. Allegro moderato
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Beethoven: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Debussy: Prélude à l’après-midi d’un faune, CD 87, L. 86
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Chopin: Piano Concerto No. 1 in E Minor, Op. 11: II. Romanza. Larghetto
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J. Strauss II: An der schönen blauen Donau, Op. 314
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Mahler: Symphony No. 5 in C-Sharp Minor: IV. Adagietto. Sehr langsam
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Schumann: Cello Concerto in A Minor, Op. 129: I. Nicht zu schnell
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Die Meistersinger von Nurnberg (1919-1930)
Mahler: Symphony No. 5, GMW 44 (Live at Carnegie Hall, New York, 3/24/1966)
Mahler: Symphony No. 5 in C-Sharp Minor: IV. Adagietto. Sehr langsam (Conclusion)
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Sibelius: Karelia Suite, Op. 11: III. Alla marcia
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Madama Butterfly, Act II: Un bel dì vedremo (Butterfly)
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Handel / Arr. Mackerras & Rothwell: Oboe Concerto No. 2a in B-Flat Major, HWV 301: IV. Vivace
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Verdi: La forza del destino: Overture (Excerpt)
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Handel / Arr. Mackerras & Rothwell: Oboe Concerto No. 2a in B-Flat Major, HWV 301: III. Siciliano
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Madama Butterfly, Act II: Humming Chorus
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Handel / Arr. Mackerras & Rothwell: Oboe Concerto No. 2a in B-Flat Major, HWV 301: I. Adagio - II. Allegro
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Klassische Musik für den Sommer - Über das Meer
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The Great Cello Concertos: Dvořák, Schumann, Saint-Saëns, Elgar, Haydn...
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Vaughan Williams: Fantasia on a Theme by Thomas Tallis
Ralph Vaughan Williams - The Lark Ascending; Tallis Fantasia
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