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genre: chamber music
description: Antje Weithaas (born 1966)"Antje Weithaas", short biography, klassik-heute.com (in German) is a German classical violinist. Apart from solo recitals and chamber music performances, she has played with
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followers: 1600
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      date published: 2026-07-06T06:56:49Z
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album: Bruch: Violin Concerto No. 3, Romanze & Konzertstück for Violin & Orchestra
album: Spohr: Doppelkonzerte (Musik am Gothaer Hof)
track: Clarinet Quartet: I. Mäßig bewegt
track: Clarinet Quartet: II. Sehr langsam
track: String Quartet No. 13 in G Major, B. 192: I. Allegro moderato - Live

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  date published: 2026-07-08T03:20:19Z
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Octet in E-Flat Major, Op. 20, MWV R20: III. Scherzo (Allegro leggierissimo) - Live
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T03:35:13Z
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Octet in E-Flat Major, Op. 20, MWV R20: IV. Presto - Live
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Octet in C Major, Op. 7: I. Très modéré - Live
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by artist: George Enescu
by artist: Gustav Rivinius
by artist: Antoine Tamestit
by artist: Quirine Viersen
by artist: Isabelle Faust
by artist: Christian Tetzlaff
by artist: Antje Weithaas
by artist: Kathy Gowers
by artist: Rachel Roberts
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popularity: 3
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Octet in C Major, Op. 7: II. Très fougueux - Live
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by artist: Gustav Rivinius
by artist: Antoine Tamestit
by artist: Rachel Roberts
by artist: Antje Weithaas
by artist: Christian Tetzlaff
by artist: Isabelle Faust
by artist: Kathy Gowers
by artist: Quirine Viersen
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Octet in C Major, Op. 7: III. Lentement - Live
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explicit: false
by artist: George Enescu
by artist: Quirine Viersen
by artist: Gustav Rivinius
by artist: Antoine Tamestit
by artist: Rachel Roberts
by artist: Antje Weithaas
by artist: Christian Tetzlaff
by artist: Isabelle Faust
by artist: Kathy Gowers
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popularity: 2
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Octet in C Major, Op. 7: III. Lentement - Live
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Octet in C Major, Op. 7: IV. Mouvement de valse bien rythmée - Live
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duration: PT9M24S
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explicit: false
by artist: George Enescu
by artist: Quirine Viersen
by artist: Isabelle Faust
by artist: Christian Tetzlaff
by artist: Antje Weithaas
by artist: Kathy Gowers
by artist: Rachel Roberts
by artist: Antoine Tamestit
by artist: Gustav Rivinius
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popularity: 3
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Bruch: Violin Concerto No. 3, Romanze & Konzertstück for Violin & Orchestra
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Spohr: Doppelkonzerte (Musik am Gothaer Hof)
type: MusicAlbum
date published: 1998-04-18

Clarinet Quartet: I. Mäßig bewegt
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by artist: Enrico Pace
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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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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Clarinet Quartet: II. Sehr langsam
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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 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
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String Quartet No. 13 in G Major, B. 192: I. Allegro moderato - Live
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popularity: 1
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x31e6aa64bfcc8a5429264874e1c8de10cc29f48a3988c7597a3f29f9c1837237
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960334
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70900179
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15Z
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e6aa64bfcc8a5429264874e1c8de10cc29f48a3988c7597a3f29f9c1837237. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAQ70900179 — a six-check JSON result.
  date published: 2026-07-31T02:19:15Z
audio: String Quartet No. 13 in G Major, B. 192: I. Allegro moderato - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.576
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.259
  additional property: Energy
    type: PropertyValue
    value: 0.154
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.923
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.708
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.153
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.62
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major