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album: Fuchs: The Complete Works for Cello & Piano
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album: La flute à l’école de Paris
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album: Hiller: Piano Quartet No. 3 in A Minor, Op. 133 & Piano Quintet in G Major, Op. 156
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album: Huber: Piano Quintet No. 1 in G Minor, Op. 111 & Piano Quintet No. 2 in G Major, Op. 125
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album: Radu Paladi: Concertos & Symphonic Suite "The Little Magic Flute"
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  date published: 2022-08-05
album: Berger: Konzertstück, Op. 43a / Symphony, Op. 71
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  date published: 2021
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album: Schaeuble: Piano Concerto, Op. 50, Oboe Concertino, Op. 44 & Serenade, Op. 42
album: Herz: Orchestral Works
album: Constantinescu: Piano Concerto & Wedding in the Carpathians
album: Moser: Orchestral Works
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album: Leiviskä: Piano Concerto in D Minor, Op. 7 & Symphony No. 1 in B-Flat Major
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album: Heinrich Hofmann - Complete Piano Chamber Music
album: Frid: The Complete Works for Violin and Piano
album: Johanna Senfter - Complete Works for Viola And Piano
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album: Papandopulo: Works for Piano & Strings
album: Le violoncelle à l'école de Paris
album: Schubert, Weinberg & Others: Double Bass Works
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album: Dubois: Piano Quintet in F Major & Piano Quartet in A Minor
album: Catoire: Chamber Works
album: Oscar Straus: Orchestral Works
album: Scharwenka: Chamber Music
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album: Frid: Symphony No. 3, Double Concerto & Inventions
album: Kahn: Works for Cello & Piano
album: Voyages Sonores
album: Kuula: Works for Violin & Piano
album: Gernsheim: Complete Cello Sonatas
album: Rudolf Moser: Overture to a Church concert Op. 41
album: Antal Doráti: Piano Concerto - Mátyás Seiber: Orchestral Suite from "The Invitation" - Renaissance Dance Suite
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album: Rössler: Sextet, Op. 16 & Piano Quintet, Op. 28
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    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB262100685
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0xbf2cc6a36cce3e465b5c89ae6a8ebb2eb35514f13ea0f51601a1f2749f063e95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEB262100685 — a six-check JSON result.
    date published: 2026-07-02T03:30:09Z
  audio: Serenade on Old Graz Contredanses, Op. 83b: V. Menuet
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    additional property: Tempo (BPM)
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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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    additional property: Speechiness
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    additional property: Acousticness
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      value: 0.904
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.901
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.219
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.846
    additional property: Key Name
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    additional property: Mode Name
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Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
type: MusicAlbum
date published: 2022-03-04
track: Piano Quintet in F-Sharp Minor, Op. 30: I. Allegro molto agitato ed appassionato
  type: MusicRecording
  duration: PT9M2S
  duration ms: 542453
  explicit: false
  by artist: Carl Frühling
  by artist: Daniel Giglberger
  by artist: Nina Karmon
  by artist: Roland Glassl
  by artist: Floris Mijnders
  by artist: Oliver Triendl
  in album: Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
    type: MusicAlbum
    date published: 2022-03-04
  isrc code: DEAD62106201
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  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x533dc41d65db715119a4adc82897fe3f418f0bc3c7034960eaab5de0278b6892
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960344
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960344
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106201
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T04:14:58Z
  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 0x533dc41d65db715119a4adc82897fe3f418f0bc3c7034960eaab5de0278b6892. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEAD62106201 — a six-check JSON result.
    date published: 2026-07-31T04:14:58Z
  audio: Piano Quintet in F-Sharp Minor, Op. 30: I. Allegro molto agitato ed appassionato
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
      type: PropertyValue
      value: 0.963
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.826
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.107
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.911
    additional property: Key Name
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    additional property: Mode Name
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track: Piano Quintet in F-Sharp Minor, Op. 30: II. Andante cantabile
  type: MusicRecording
  duration: PT7M20S
  duration ms: 440360
  explicit: false
  by artist: Carl Frühling
  by artist: Daniel Giglberger
  by artist: Nina Karmon
  by artist: Roland Glassl
  by artist: Floris Mijnders
  by artist: Oliver Triendl
  in album: Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
    type: MusicAlbum
    date published: 2022-03-04
  isrc code: DEAD62106202
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:19:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8ce61ca35e3cc6305c4909227d3c543fed5ef2c2045978d4a5bf0d5952b14869
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106202
  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 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 0x8ce61ca35e3cc6305c4909227d3c543fed5ef2c2045978d4a5bf0d5952b14869. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106202 — a six-check JSON result.
    date published: 2026-07-08T03:22:41Z
  audio: Piano Quintet in F-Sharp Minor, Op. 30: II. Andante cantabile
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.451
    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Piano Quintet in F-Sharp Minor, Op. 30: III. Scherzo
  type: MusicRecording
  duration: PT6M38S
  duration ms: 398160
  explicit: false
  by artist: Carl Frühling
  by artist: Daniel Giglberger
  by artist: Nina Karmon
  by artist: Roland Glassl
  by artist: Floris Mijnders
  by artist: Oliver Triendl
  in album: Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
    type: MusicAlbum
    date published: 2022-03-04
  isrc code: DEAD62106203
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Piano Quintet in F-Sharp Minor, Op. 30: III. Scherzo
track: Piano Quintet in F-Sharp Minor, Op. 30: IV. Finale
track: Piano Quartet in D Major, Op. 35: I. Allegro moderato
track: Piano Quartet in D Major, Op. 35: II. Scherzo
track: Piano Quartet in D Major, Op. 35: III. Larghetto

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-31T01:49:28+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x8dda0cc1aabedb781b5e6725212b7b4ae1213fcd74e26e39b07ec97cf01d9434

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960334

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960334

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106203

OTSTimestamp
type: PropertyValue
value: 2026-07-31T02:19:15Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda0cc1aabedb781b5e6725212b7b4ae1213fcd74e26e39b07ec97cf01d9434. 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/DEAD62106203 — a six-check JSON result.
date published: 2026-07-31T02:19:15Z

Piano Quintet in F-Sharp Minor, Op. 30: III. Scherzo
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 126.627
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.351
additional property: Energy
  type: PropertyValue
  value: 0.146
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.962
additional property: Instrumentalness
  type: PropertyValue
  value: 0.079
additional property: Liveness
  type: PropertyValue
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additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.157
additional property: Loudness (dB)
  type: PropertyValue
  value: -21.042
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
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Piano Quintet in F-Sharp Minor, Op. 30: IV. Finale
type: MusicRecording
duration: PT6M21S
duration ms: 381680
explicit: false
by artist: Carl Frühling
by artist: Daniel Giglberger
by artist: Nina Karmon
by artist: Roland Glassl
by artist: Floris Mijnders
by artist: Oliver Triendl
in album: Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
  type: MusicAlbum
  date published: 2022-03-04
isrc code: DEAD62106204
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:31:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f122cc9a364a2880b2fa316fa260bf63e2f74a2a18fd1b31d5c773dfdd897f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106204
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 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 0x1f122cc9a364a2880b2fa316fa260bf63e2f74a2a18fd1b31d5c773dfdd897f8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106204 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Piano Quintet in F-Sharp Minor, Op. 30: IV. Finale
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.88
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.416
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.799
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
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Piano Quartet in D Major, Op. 35: I. Allegro moderato
type: MusicRecording
duration: PT10M41S
duration ms: 641773
explicit: false
by artist: Carl Frühling
by artist: Daniel Giglberger
by artist: Roland Glassl
by artist: Floris Mijnders
by artist: Oliver Triendl
in album: Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
  type: MusicAlbum
  date published: 2022-03-04
isrc code: DEAD62106205
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T19:54:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd15e8ff5e3803ef2303511e0c554530402265decfa86fead13d635c3d3ebf6d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960459
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106205
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
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 0xd15e8ff5e3803ef2303511e0c554530402265decfa86fead13d635c3d3ebf6d5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEAD62106205 — a six-check JSON result.
  date published: 2026-07-31T20:22:46Z
audio: Piano Quartet in D Major, Op. 35: I. Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.079
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.234
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Quartet in D Major, Op. 35: II. Scherzo
type: MusicRecording
duration: PT5M46S
duration ms: 346653
explicit: false
by artist: Carl Frühling
by artist: Daniel Giglberger
by artist: Roland Glassl
by artist: Floris Mijnders
by artist: Oliver Triendl
in album: Frühling: Piano Quintet in F-Sharp Minor, Op. 30 & Piano Quartet in D Major, Op. 35
  type: MusicAlbum
  date published: 2022-03-04
isrc code: DEAD62106206
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T16:58:42+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x9ac0355d303a800d604c7783b4f7be444a59dc22b125f4e201a42c1b3b9bd98e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62106206
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
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
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Seiber: Works
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Papandopulo: Works for Piano & Strings
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Le violoncelle à l'école de Paris
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Schubert, Weinberg & Others: Double Bass Works
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Labor: Chamber Works
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Dubois: Piano Quintet in F Major & Piano Quartet in A Minor
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Catoire: Chamber Works
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Oscar Straus: Orchestral Works
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Scharwenka: Chamber Music
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Labor: Piano Quintet in E Minor, Op. 3 & Piano Quartet in C Major, Op. 6
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Reizenstein: Piano Concerto No. 2 & Orchestral Works
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Frid: Symphony No. 3, Double Concerto & Inventions
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Kahn: Works for Cello & Piano
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Voyages Sonores
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Kuula: Works for Violin & Piano
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Antal Doráti: Piano Concerto - Mátyás Seiber: Orchestral Suite from "The Invitation" - Renaissance Dance Suite
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    date published: 2026-06-13T15:41:10Z
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