Carolin Widmann (; born 1976) is a German classical violinist. Widmann plays a violin made in 1782 by Giovanni Battista Guadagnini. Career Born in Munich, Widmann studied with Igor Ozim in Cologne,
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 0xc5bc54415fd65132608b1fd8edca8f54662be33c6b76163b5390811da656db2f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20b17e80-af88-4141-a0c0-5390af4aeb59.json and https://artists.proofprofile.net/proofs/artist/20b17e80-af88-4141-a0c0-5390af4aeb59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musica viva, Vol. 26: Salvatore Sciarrino
Pierre Boulez: Anthèmes & Dialogue de l'ombre double
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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Messiaen: Quatuor pour la fin du temps, I/22 (Live)
Schubert: Octet in F Major, D. 803 / Widmann: Octet in F Major
Pascal Dusapin: À Quia, Aufgang & Wenn du dem Wind...
Introduction & Variations For Flute & Piano, D.802 (Op.160): Variation IV
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Introduction & Variations For Flute & Piano, D.802 (Op.160): Variation V
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Franz Schubert: Fantasie C-Dur / Rondo h-Moll / Sonate A-Dur
Fantasia In C, For Violin And Piano, D.934: Andante molto
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Fantasia In C, For Violin And Piano, D.934: Allegretto
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Fantasia In C, For Violin And Piano, D.934: Andantino (Tema con variazioni)
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Spiritus sanctus vivificans vita - Version I
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd558235dd53523adba9935b3843b9d1f36f7819646a9597233e968b6bbad392. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEB332170902.
Three Miniatures for Solo Violin: I. A Lullaby for Lalit
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Three Miniatures for Solo Violin: II. A Canon for Sally
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Three Miniatures for Solo Violin: III. Lauer Lied
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Sonata No. 5 in G Major, Op. 27: I. L’Aurore
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Sonata No. 5 in G Major, Op. 27: II. Danse rustique
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Spiritus sanctus vivificans vita - Version II
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Violin Partita No. 2 in D Minor, BWV 1004: I. Allemanda
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Violin Partita No. 2 in D Minor, BWV 1004: II. Corrente
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Violin Partita No. 2 in D Minor, BWV 1004: III. Sarabanda
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Violin Partita No. 2 in D Minor, BWV 1004: IV. Giga
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Violin Partita No. 2 in D Minor, BWV 1004: V. Ciaccona
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Enescu: Violin Concerto & Fantaisie for Piano & Orchestra
Felix Mendelssohn Bartholdy / Robert Schumann
Anderson: In Liebliche Blaue, Alleluia & The Stations of the Sun
Sonata no.1 for Violin and Piano in A minor, Op. 105: 1. Mit leidenschaftlichem Ausdruck
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Sonata no.1 for Violin and Piano in A minor, Op. 105: 2. Allegretto
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Sonata no.1 for Violin and Piano in A minor, Op. 105: 3. Lebhaft
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Sonata no.2 for Violin and Piano in D minor, op.121: 1. Ziemlich langsam - Lebhaft
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J.S. Bach: Violin Partita No. 2 in D Minor, BWV 1004: I. Allemanda
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Ysaÿe: Sonata No. 5 in G Major, Op. 27: II. Danse rustique
Musik Für Kinder & Other Works By Carl Orff
Musik für Kinder III, No. 15 "Four Pieces for Xylophone": Gassenhauer Nach Hans Neusiedler
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Five Pieces for Soprano Blockflöte and Percussion: Cantabile
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Orff-Schulwerk, Vol. 2: Musik für Kinder
Fünf Stücke für Sopran-Blockflöte und Schlagzeug
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Michael Zev Gordon: The Impermanence of Things
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