1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0ed650337082af60de8b694f116d83d5e18c332269171c3a5236760a458db743. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fad5331-582a-44f3-ac5a-04326ec903b4.json and https://artists.proofprofile.net/proofs/artist/8fad5331-582a-44f3-ac5a-04326ec903b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Violinkonzert e-Moll, Op. 64, MWV O14: I. Allegro molto appassionato -
Violinkonzert e-Moll, Op. 64, MWV O14: II. Andante -
Violinkonzert e-Moll, Op. 64, MWV O14: II. Allegretto non troppo - III. Allegro molto vivace
Symphony No. 1 in C Major, Op. 21: I. Adagio molto - Allegro con brio
Symphony No. 1 in C Major, Op. 21: II. Andante cantabile con moto
Symphony No. 1 in C Major, Op. 21: III. Menuetto - Allegro molto e vivace
Symphony No. 1 in C Major, Op. 21: IV. Adagio - Allegro molto
Violin Sonata in E-Flat Major, Op. 18, TrV 151: I. Allegro, ma non troppo
Violin Sonata in E-Flat Major, Op. 18, TrV 151: II. Improvisation. Andante cantabile
Violin Sonata in E-Flat Major, Op. 18, TrV 151: III. Finale. Andante - Allegro
Gypsy Songs, Op. 55, B. 104: No. 4, Songs My Mother Taught Me (Arr. F. Kreisler for Violin & Piano)
Consolations, S. 172: No. 3 in D-Flat Major. Lento placido (Arr. N. Milstein for Violin & Piano)
2 Canciones Mexicanas: No. 2, Estrellita (Arr. J. Heifetz for Violin & Piano)
Sicilienne in E-Flat Major (Attrib. M.T. von Paradis)
Orfeo ed Euridice, Wq. 30: Melodie (Arr. F. Kreisler for Violin & Piano)
Beau soir, L. 6 (Arr. J. Heifetz for Violin & Piano)
Sea-Shell (Arr. E. Zimbalist for Violin & Piano)
Der Opernball, Op. 40: Midnight Bells (Arr. F. Kreisler for Violin & Piano)
Suite for Violin & Piano: II. Mother & Child
Suite populaire espagnole: V. Asturiana (After M. de Falla)
Porgy & Bess: My Man's Gone Now (Arr. J. Heifetz for Violin & Piano)
Moon River (From "Breakfast at Tiffany's) [Arr. T. Poster for 2 Violins & Piano]
When I Fall in Love (Arr. T. Poster for Violin & Piano)
Over the Rainbow (From "The Wizard of Oz") [Arr. T. Poster for Violin & Piano]
2 Canciones mexicanas: No. 2, Estrellita (Arr. J. Heifetz for Violin & Piano)
Look for the Silver Lining (Arr. T. Poster for Chamber Ensemble)
La vie en rose (Arr. T. Poster for Violin & Piano)
Sérénade espagnole, Op. 150 (Arr. F. Kreisler for Violin & Piano)
El día que me quieras (From "El día que me quieras") [Arr. T. Poster for Chamber Ensemble]
Begin the Beguine (Arr. T. Poster for Chamber Ensemble)
A Nightingale Sang in Berkeley Square (Arr. T. Poster for Violin & Piano)
Farewell to Cucullain (Londonderry Air) [Arr. F. Kreisler for Violin & Piano]
Send in the Clowns (From "A Little Night Music") [Arr. T. Poster for Violin & Piano]
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1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1308ac997024ad7d2285c782ef028e479fb0d112a79efffeeb1a45e40d25d66a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1IY1ooJ4wX4I6c0rULM97i.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1IY1ooJ4wX4I6c0rULM97i.
{"copyright_id":"0x8cde823dad63484e6b54dd52acc5bc69380e5f92e37d0f431e37aaba1eaaf2e3","isrc":"GBYDS2100247","name":"La vie en rose (Arr. T. Poster for Violin & Piano)","registered_at":"2026-06-24T11:22:38Z","spotify_id":"1izWLgBSXII8HzEKRNIw6i","type":"track"}
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Two Pieces: I. Nocturne - To Israel Citkowitz
Two Pieces: II. Ukelele Serenade - To Samuel Dushkin
Three Compositions, Op. 40: I. La Captive (For G-string)
Three Compositions, Op. 40: II. Berceuse
Three Compositions, Op. 40: III. Mazurka
Three Pieces from Suite, Op. 6: I. March
Three Pieces from Suite, Op. 6: II. Lullaby
Three Pieces from Suite, Op. 6: III. Waltz
Heart's Ease, H. 161a: Heart's Ease, H. 161a
Sonata, Op. 112: III. Thème populaire grec recueilli par Bourgeault-Ducoudray
Sonata No.2, Op. 108: I. Allegro non troppo
Sonata No.2, Op. 108: III. Finale. Allegro non troppo
Sonata for Violin and Piano: I. Sans lenteur, tendrement
Sonata for Violin and Piano: II. (12 C.V. 8 Cyl. 5000 tours) Veloce
Sonata for Violin and Piano: III. Modéré, très à l'aise, au gré de l'interprète
Sonata No. 2, Op. 108: I. Allegro non troppo
Sonata No. 2, Op. 108: III. Finale. Allegro non troppo
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The New Four Seasons - Vivaldi Recomposed
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3 Romances, Op. 22: No. 1, Andante molto
Romance – The Piano Music of Clara Schumann
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{"copyright_id":"0x5f353eff5e62f5f91dc42496f6f0978e22acec644882adfd97ef24d9b80743a0","isrc":"GBF071900332","name":"3 Romances, Op. 22: No. 2, Allegretto","registered_at":"2026-06-22T22:11:49Z","spotify_id":"3GxdQbuauL3izZflp5yOnC","type":"track"}
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3 Romances, Op. 22: No. 3, Leidenschaftlich schnell
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Violin Concerto in G Minor, Op. 80: I. Allegro maestoso
Violin Concerto in G Minor, Op. 80: II. Andante semplice
Violin Concerto in G Minor, Op. 80: III. Allegro molto
Romance for Violin, Op. 39: I. Larghetto