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description: Paul Neubauer (born in Encino, California, in 1962) is an American violist. Neubauer was a student of Paul Doktor, Alan de Veritch and William Primrose. In 1980, aged 17, he won the Lionel Tertis Int
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  track: Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): I. Allegro non troppo
  track: Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): II. Allegro
  track: Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): III. Largo
  track: Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): IV. Allegro
  track: Impromptu, Op. 33
  track: Viola Sonata, Op. 147: I. Moderato
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Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): I. Allegro non troppo
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Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): II. Allegro
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Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): III. Largo
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Cello Sonata in D Minor, Op. 40 (Arr. for Viola & Piano by Anonymous): IV. Allegro
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Impromptu, Op. 33
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Viola Sonata, Op. 147: I. Moderato
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  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSLT2517606
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957120
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3462d1a40017fc7c331bb5756af3f69347dd4a9197328329868173ff23a2b056. 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/GBSLT2517606.
  date published: 2026-07-08T03:22:41Z
audio: Viola Sonata, Op. 147: I. Moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.46
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.192
  additional property: Energy
    type: PropertyValue
    value: 0.032
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.742
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.046
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.757
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor