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Sonata for Keyboard and Flute in A Major, K. 12: II. Allegro
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Freie Fantasie fürs Clavier in F-Sharp Minor, H. 300: VIII. Adagio
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Violin Sonata in D Minor, RV 14: II. Corrente. Allegro
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Partita No. 2 in C Minor, BWV 826: V. Rondeau - Recorded 2018
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subject of: OpenTimestamps Proof of Existence
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March in E-Flat Major, BWV Anh. 127
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Sonata in A Major, Op. 6 No. 11: III. Adagio
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Violin Sonata in D Minor, RV 14: III. Adagio
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2-Part Invention No. 1 in C Major, BWV 772
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Sonata in A Minor, Op. 6 No. 6: IV. Allegro
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Nouvelles suites de pièces de clavecin, Suite in A Minor, RCT 5: VIId. Double 3
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Flute Sonata in B Minor, HWV 376 "Halle No. 3": III. Largo
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subject of: OpenTimestamps Proof of Existence
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Nouvelles suites de pièces de clavecin, Suite in A Minor, RCT 5: VIIb. Double 1
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subject of: OpenTimestamps Proof of Existence
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Violin Sonata No. 11 in E Major, Op. 5 No. 11: V. Gavotta. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Premier livre de pièces de clavecin, Suite in A Minor, RCT 1: IX. Menuet
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  date published: 2026-07-08T03:22:41Z
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Sonata in B-Flat Major, Op. 6 No. 3: I. Grave
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Sonata in B-Flat Major, Op. 6 No. 3: IV. Presto
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Concerto for Strings in G Minor, RV 157: II. Largo
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Ottone in villa, RV 729: Sinfonia: b. Larghetto
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Variations on a Rococo Theme, Op. 33 (Arr. Malzew for Cello, Piano & 4 Saxophones): Theme. Moderato semplice
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  date published: 2026-07-08T03:53:27Z
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Hungarian Dances, WoO 1 (Arr. Joachim for Violin & Piano): No. 18 in D Major. Molto vivace
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  date published: 2026-07-08T03:53:27Z
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Violin Sonata in C Major, RV 1: III. Giga. Allegro
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6 Épigraphes antiques, CD 139: VI. Pour remercier la pluie au matin
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Hungarian Dances, WoO 1 (Arr. Joachim for Violin & Piano): No. 9 in E Minor. Allegro non troppo
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Violin Sonata in G Major, BWV 1021: IV. Presto
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Flute Sonata in G Major, Op. 1 No. 5, HWV 363b: V. Menuet
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3 Equali for 4 Trombones, WoO 30: No. 2, Poco adagio
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Violin Sonata in E Minor, BWV 1023: I. Prelude. [Allegro]
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Allegretto - Piano Works
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": III. Rondo. Allegretto
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16 German Dances, D. 783: No. 3 in B-Flat Major
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Scherzo in B Minor, MWV U69
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f0c5d203066a1835fe525b5de0d3daf391449cd6b9d6628c5eb1b1ed147d81. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY1509802.
  date published: 2026-07-08T03:53:27Z
audio: Scherzo in B Minor, MWV U69
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Piano Piece in D Minor (c. 1884)
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duration: PT1M25S
duration ms: 85800
explicit: false
by artist: Sergei Rachmaninoff
by artist: Howard Shelley
in album: Allegretto - Piano Works
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genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Piano Piece in D Minor (c. 1884)
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Children's Album, Op. 39: No. 4. Maman
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duration: PT0M49S
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Lívia Rév
in album: Allegretto - Piano Works
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8beb0f2b75e3c80383172ecaf639309c146c4c667ea94a9e0feb5af4238a05. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJY8618514.
  date published: 2026-07-08T03:53:27Z
audio: Children's Album, Op. 39: No. 4. Maman
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Papillons, Op. 2: No. 9 in B-Flat Minor. Prestissimo
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duration: PT0M42S
duration ms: 42000
explicit: false
by artist: Robert Schumann
by artist: Marc-André Hamelin
in album: Allegretto - Piano Works
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genre: classical
genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Papillons, Op. 2: No. 9 in B-Flat Minor. Prestissimo
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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Classical Favourites: Chamber Music
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track: Flute Sonata in C Major, BWV 1033: I. Andante
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  by artist: Lisa Beznosiuk
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
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    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Flute Sonata in C Major, BWV 1033: I. Andante
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track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): I. Marche - World Premiere Recording
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  by artist: Wolfgang Amadeus Mozart
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  by artist: Margarita Pochebut
  by artist: Svenja Dose
  by artist: Oscar Jockel
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  genre: classical
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T08:56:20Z
  audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): I. Marche - World Premiere Recording
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track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): II. Allegro - World Premiere Recording
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  by artist: Leonhard Baumgartner
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  subject of: OpenTimestamps Proof of Existence
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track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): III. Menuet [I] – Trio - World Premiere Recording
track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): V. Adagio - World Premiere Recording
track: Hungarian Dances, WoO 1 (Arr. Joachim for Violin & Piano): No. 19 in A Minor. Allegretto

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CopyrightChainExplorerURL
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d7bf8fee980a97c94057a48a4275e8269401d9b178f58b5d6771655814890b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN962402372.
date published: 2026-07-08T03:22:41Z

Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): II. Allegro - World Premiere Recording
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): V. Adagio - World Premiere Recording
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Hungarian Dances, WoO 1 (Arr. Joachim for Violin & Piano): No. 19 in A Minor. Allegretto
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C.P.E. Bach: Flute Concerto & Sonatas
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