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 0x00bb6aeb250fcb21e1577a1af18ba949dbca154e5ea93f37391a40091682b5d5. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/257803b9-31a5-4c72-9df0-8e95c44a8d95.json and https://artists.proofprofile.net/proofs/artist/257803b9-31a5-4c72-9df0-8e95c44a8d95.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 0xf7ad4daa1a7859c1f288e67c6b458605891ffbde971dab78afbee20f471d2c14. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ117706388 — a six-check JSON result.
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Kinderszenen, Op. 15: I. Von Fremdem Ländern Und Menschen
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Piano Concerto in A Minor, Op. 54: I. Allegro affettuoso
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Waldszenen, Op. 82: VII. Der Vogel als Prophet
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Albumblätter, Op. 124: No. 6, Wiegenliedchen
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Cello Concerto in A Minor, Op. 129: III. Sehr lebhaft
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Kinderszenen, Op. 15: XII. Kind im Einschlummern
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Paganini, N.: Violin Music, Vol. 2 (Heifetz, Kreisler, Menuhin, Ricci, Vecsey) (1930-1950)
Beethoven, Strauss, Bizet & Others: Songs (Live)
Violin Sonata No. 5 in F Major, Op. 24 "Spring": I. Allegro
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Concerto for Violin and Orchestra in D Major, Op. 61: II. Larghetto
The Orchestra National De La Radiodiffusion Francaise
Orchestre National Radiodiffusion Française
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Violin Concerto in A Minor, BWV 1041: I. (No Tempo Indication)
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Brahms: 28 Lieder (Les indispensables de Diapason)
Fantasie in C Major, Op. 17: III. Langsam getragen - Durchweg leise zu halten
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Romantische klassische Musik von Schumann
Brahms, Schubert, R. Strauss & Others: Art Songs (Live)
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Tchaikovsky: Violin Concerto in D Major, Op. 35: I. Allegro moderato
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Mendelssohn: Violin Concerto in E Minor, Op. 64, MWV O14: I. Allegro molto appassionato
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Classical Music Inspired by Romani Music
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Paganini / Arr. Auer: 24 Caprices, Op. 1: No. 24 in A Minor
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Wienawski: Polonaise de concert in D Major, Op. 4
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Debussy / Arr. Heifetz for Violin and Piano: L'Enfant prodigue, CD 61, L. 57: Prélude
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Szymon Goldberg Edition, Vol. 2: Commercial Recordings (1932-1951)
The Complete Recordings, Vol. 8 (1926-1927)
Beethoven / Mendelssohn: Violin Concertos, Vol. 1 (Kreisler) (1926)
The Four Seasons, Violin Concerto No. 1 in E Major, RV 269 "Spring": I. Allegro
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Romance for Violin and Orchestra in G Major, Op. 40
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Violin Concerto in E Minor, Op. 64: I. Allegro molto appassionato
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Violin Concerto in D Major, Op. 35: I. Allegro moderato - Moderato assai
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": III. Allegro
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Concerto for 2 Violins in D Minor, BWV 1043:: II. Largo, ma non tanto
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Salzburger Liederabende 1956-2010 (Live)
Mozart: Don Giovanni, K. 527 - Schubert: Lachen und Weinen, Op. 59 No. 4, D. 777, Im Fruhling, Op. 101 No. 1, D. 882, Du bist die Ruh, Op. 59 No. 3, D. 776 & Gretchen am Spinnrade, Op. 2 D. 1
Introduction and Rondo capriccioso, Op. 28
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Elgar: Pomp and Circumstance, Enigma Variations, Concerto pour violoncelle & La Capricieuse
R. Strauss, Sibelius & Prokofiev: Violin Works