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genre: chamber music
genre: classical
description: Jörg Widmann (; born 19 June 1973) is a German composer, conductor and clarinetist. In 2023, Widmann was the third most performed living contemporary composer in the world. Formerly a clarinet and com
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album: Weber: Clarinet Quintet, Concertino for Clarinet, Grand Duo Concertant & Der Freischütz Overture
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  track: Clarinet Quintet in B-Flat Major, Op. 34: I. Allegro
album: Enigma
album: Metamorphosis
album: Mozart & Widmann: Clarinet Quintets
album: Widmann, Strauss & Beethoven: Con brio
album: Pierre Boulez: Anthèmes & Dialogue de l'ombre double
album: Johannes Brahms: Clarinet Sonatas
album: Eisler, Ravel & Jörg Widmann: Duos
album: Messiaen: Quatuor pour la fin du temps, I/22 (Live)
album: Jörg Widmann: Arche (Live at Elbphilharmonie, Hamburg / 2017)
album: Jörg Widmann: Drittes Labyrinth | Polyphone Schatten
album: Mendelssohn: Symphony No. 3 in A Minor "Scottish" & The Hebrides - Jörg Widmann: 180 Beats per Minute & Fantasie
album: Widmann: Viola Concerto
album: Once Upon a Time… Fairy Tales by Robert Schumann & Jörg Widmann
album: Mendelssohn: Symphony No. 5 in D Major, Op. 107, MWV N 15 "Reformation"
album: Mozart: Clarinet Concerto, K. 622 - Weber: Clarinet Concerto No. 1 - Widmann: Drei Schattentänze
album: Widmann: Streichquartette
album: Mozart: Clarinet Quintet; String Quartet No. 15
album: Widmann: Works for Ensemble
album: Widmann: Piano Works
album: Widmann: Violin Concerto - Antiphon - Insel der Sirenen
album: Rihm Edition, Vol. 6
album: introspective | retrospective
album: Jörg Widmann: Elegie
album: Dvořák: String Sextet in A Major, Op. 48 / Schumann: 5 Stücke im Volkston, Op. 102; Fantasiestücke, Op. 73 / Reimann: Solo for Clarinet (Live)
album: Schubert: Octet in F Major, D. 803 / Widmann: Octet in F Major
album: Reimann, A.: Cantus / Ollea / Solo for Clarinet / … Ni Una Sombra / Arietta
album: Widmann: String Quartets
album: Rihm: 4 Studien zu einem Klarinettenquintett - 4 Male
album: Genzmer: Kammermusik
album: 7 Capricci: VII. Zirkusparade
album: Mozart: Clarinet Quintet, K. 581: II. Larghetto
album: Beethoven: Violin Concerto, III. Rondo. Allegro
album: Brahms: Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 4. Vivace
album: Brahms: Sonata for Clarinet and Piano No. 2 in E Flat Major, Op. 120 No. 2: 3. Andante con moto - Allegro
album: Widmann: Arche: 5. Dona nobis pacem (Live at Elbphilharmonie, Hamburg / 2017)
track: Intermezzi for Piano: 2. Zart singend

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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)
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Mozart & Widmann: Clarinet Quintets
type: MusicAlbum
date published: 2023-03-17
track: Clarinet Quintet in A Major, K. 581: I. Allegro
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  by artist: Wolfgang Amadeus Mozart
  by artist: Jörg Widmann
  by artist: Hagen Quartett
  in album: Mozart & Widmann: Clarinet Quintets
    type: MusicAlbum
    date published: 2023-03-17
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: DELN22201001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3d0edbaf762a2f34f468aec8af0b084ef5744346c4b2011a0fa85e70258f40b9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960327
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN22201001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T00:26:26Z
  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 0x3d0edbaf762a2f34f468aec8af0b084ef5744346c4b2011a0fa85e70258f40b9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DELN22201001.
    date published: 2026-07-31T00:26:26Z
  audio: Clarinet Quintet in A Major, K. 581: I. Allegro
    type: AudioObject
    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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track: Clarinet Quintet in A Major, K. 581: II. Larghetto
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  duration: PT6M31S
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  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Jörg Widmann
  by artist: Hagen Quartett
  in album: Mozart & Widmann: Clarinet Quintets
    type: MusicAlbum
    date published: 2023-03-17
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN22201002
  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 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 0x9867f9a3022af52b0a157fef175506fadea717a9cf2e3278486ee02906540111. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DELN22201002.
    date published: 2026-07-30T17:23:26Z
  audio: Clarinet Quintet in A Major, K. 581: II. Larghetto
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Danceability
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track: Clarinet Quintet in A Major, K. 581: III. Menuetto
  type: MusicRecording
  duration: PT7M22S
  duration ms: 442400
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Jörg Widmann
  by artist: Hagen Quartett
  in album: Mozart & Widmann: Clarinet Quintets
    type: MusicAlbum
    date published: 2023-03-17
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: DELN22201003
  additional property: CopyrightID
  additional property: CopyrightStatus
  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: Clarinet Quintet in A Major, K. 581: III. Menuetto
track: Clarinet Quintet in A Major, K. 581: IV. Allegretto con variazioni
track: Clarinet Quintet

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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960203

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN22201003

OTSTimestamp
type: PropertyValue
value: 2026-07-30T03:35:13Z

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 0xe20775172b92133e22a5350d9c3d482246f5072f3952a962880a24c5e5c2f2e6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DELN22201003.
date published: 2026-07-30T03:35:13Z

Clarinet Quintet in A Major, K. 581: III. Menuetto
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
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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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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)
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additional property: Key Name
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additional property: Mode Name
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Clarinet Quintet in A Major, K. 581: IV. Allegretto con variazioni
type: MusicRecording
duration: PT10M0S
duration ms: 600066
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hagen Quartett
by artist: Jörg Widmann
in album: Mozart & Widmann: Clarinet Quintets
  type: MusicAlbum
  date published: 2023-03-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DELN22201004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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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 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 0x291f76e7064f9e5380e6d6b9f9daaef674fd5c106380088c26723b3ccaf73c7a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN22201004.
  date published: 2026-07-31T04:14:58Z
audio: Clarinet Quintet in A Major, K. 581: IV. Allegretto con variazioni
  type: AudioObject
  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
    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: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Clarinet Quintet
type: MusicRecording
duration: PT38M40S
duration ms: 2320906
explicit: false
by artist: Jörg Widmann
by artist: Hagen Quartett
in album: Mozart & Widmann: Clarinet Quintets
  type: MusicAlbum
  date published: 2023-03-17
genre: classical
genre: 21st-century-classical
genre: contemporary-classical
genre: german-contemporary-classical
isrc code: DELN22201005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN22201005
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 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 0xa5d42cee1a03dd3bb42eb4c094014b45e8c53aae26e5d89a8be173e7cd4dcf63. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DELN22201005.
  date published: 2026-07-31T05:17:02Z
audio: Clarinet Quintet
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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Widmann, Strauss & Beethoven: Con brio
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date published: 2021-09-17
track: Con brio
  type: MusicRecording
  duration: PT10M57S
  duration ms: 657146
  explicit: false
  by artist: Jörg Widmann
  by artist: Irish Chamber Orchestra
  in album: Widmann, Strauss & Beethoven: Con brio
    type: MusicAlbum
    date published: 2021-09-17
  genre: classical
  genre: 21st-century-classical
  genre: contemporary-classical
  genre: german-contemporary-classical
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  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
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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 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 0x8f01d49c681725a78db4c3de292e59e0da4b7d6e453153faba0d929d214f0b5e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR50X2076701.
    date published: 2026-08-01T01:44:32Z
  audio: Con brio
    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
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    additional property: Danceability
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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Pierre Boulez: Anthèmes & Dialogue de l'ombre double
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date published: 2021-07-16
track: Anthèmes I
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  duration: PT8M52S
  duration ms: 532626
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  by artist: Carolin Widmann
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    date published: 2021-07-16
  popularity: 1
  genre: classical
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960506
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEGF72110401
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-08-01T03:50:58Z
  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 0x5836f21867f14e1506b7bbda6c79dc374a9d891bd583e56f60c31bf88c8c21bb. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEGF72110401.
    date published: 2026-08-01T03:50:58Z
  audio: Anthèmes I
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    additional property: Musical Key
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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)
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Johannes Brahms: Clarinet Sonatas
type: MusicAlbum
date published: 2020-10-02
track: Sonata for Clarinet and Piano No. 2 in E Flat Major, Op. 120 No. 2: 1. Allegro amabile
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  by artist: Johannes Brahms
  by artist: András Schiff
  by artist: Jörg Widmann
  in album: Johannes Brahms: Clarinet Sonatas
    type: MusicAlbum
    date published: 2020-10-02
  genre: classical
  genre: german-romanticism
  genre: classical-piano
  genre: late-romantic-era
  genre: chamber-music
  genre: orchestral
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  additional property: CopyrightID
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331862101
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0xd38581a6f0c1fed846d05e2f5b23e6a63f3cebb889b18de0de287a520a021d3a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEB331862101.
    date published: 2026-07-08T03:20:19Z
  audio: Sonata for Clarinet and Piano No. 2 in E Flat Major, Op. 120 No. 2: 1. Allegro amabile
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    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Valence (Positivity)
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track: Sonata for Clarinet and Piano No. 2 in E Flat Major, Op. 120 No. 2: 3. Andante con moto - Allegro
  type: MusicRecording
  duration: PT7M40S
  duration ms: 460201
  explicit: false
  by artist: Johannes Brahms
  by artist: András Schiff
  by artist: Jörg Widmann
  in album: Johannes Brahms: Clarinet Sonatas
    type: MusicAlbum
    date published: 2020-10-02
  genre: classical
  genre: german-romanticism
  genre: classical-piano
  genre: late-romantic-era
  genre: chamber-music
  genre: orchestral
  isrc code: DEB331862103
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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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
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960277
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331862103
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T16:10:47Z
  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 0x01f8776fa5c571c349f23a784f2f5be4fb8846719234fc14e7fb6ebfa3efa112. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEB331862103.
    date published: 2026-07-30T16:10:47Z
  audio: Sonata for Clarinet and Piano No. 2 in E Flat Major, Op. 120 No. 2: 3. Andante con moto - Allegro
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    additional property: Mode (Major/Minor)
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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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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Mode Name
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track: Intermezzi for Piano: 1. I
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  by artist: Jörg Widmann
  by artist: András Schiff
  in album: Johannes Brahms: Clarinet Sonatas
    type: MusicAlbum
    date published: 2020-10-02
  genre: classical
  genre: 21st-century-classical
  genre: contemporary-classical
  genre: german-contemporary-classical
  isrc code: DEB331862104
  additional property: CopyrightID
  additional property: CopyrightStatus
  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: Intermezzi for Piano: 1. I
track: Intermezzi for Piano: 2. Zart singend
track: Intermezzi for Piano: 3. Mit dunkler Glut (Agitato sempre)
track: Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 1. Allegro appassionato
track: Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 2. Andante un poco adagio
track: Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 3. Allegretto grazioso
track: Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 4. Vivace

CopyrightID
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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xa9b5916016cde06efae8b60defc8aeb43496ba2d3c9a725380b47274268bcff8

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331862104

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 0xa9b5916016cde06efae8b60defc8aeb43496ba2d3c9a725380b47274268bcff8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEB331862104.
date published: 2026-07-08T03:20:19Z

Intermezzi for Piano: 1. I
type: AudioObject
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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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)
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additional property: Key Name
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additional property: Mode Name
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Intermezzi for Piano: 2. Zart singend
type: MusicRecording
duration: PT1M22S
duration ms: 82520
explicit: false
by artist: Jörg Widmann
by artist: András Schiff
in album: Johannes Brahms: Clarinet Sonatas
  type: MusicAlbum
  date published: 2020-10-02
genre: classical
genre: 21st-century-classical
genre: contemporary-classical
genre: german-contemporary-classical
isrc code: DEB331862105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331862105
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0x10e8419f728f44e0f4cdd7f0ff3abafc85a56f36355172198c313d1f86bdb345. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEB331862105.
  date published: 2026-07-08T03:20:19Z
audio: Intermezzi for Piano: 2. Zart singend
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
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    value: 0
  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)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Intermezzi for Piano: 3. Mit dunkler Glut (Agitato sempre)
type: MusicRecording
duration: PT11M59S
duration ms: 719920
explicit: false
by artist: Jörg Widmann
by artist: András Schiff
in album: Johannes Brahms: Clarinet Sonatas
  type: MusicAlbum
  date published: 2020-10-02
genre: classical
genre: 21st-century-classical
genre: contemporary-classical
genre: german-contemporary-classical
isrc code: DEB331862106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b1dfebb2fd180255cd2b7a781a4d44c63f454da42c352b051af719b2c9be9e1
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/DEB331862106
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 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 0x2b1dfebb2fd180255cd2b7a781a4d44c63f454da42c352b051af719b2c9be9e1. 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/DEB331862106.
  date published: 2026-07-08T03:22:41Z
audio: Intermezzi for Piano: 3. Mit dunkler Glut (Agitato sempre)
  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
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  additional property: Danceability
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  additional property: Mode Name
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Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 1. Allegro appassionato
type: MusicRecording
duration: PT8M8S
duration ms: 488000
explicit: false
by artist: Johannes Brahms
by artist: András Schiff
by artist: Jörg Widmann
in album: Johannes Brahms: Clarinet Sonatas
  type: MusicAlbum
  date published: 2020-10-02
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: DEB331862109
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: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331862109
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 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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Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 2. Andante un poco adagio
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Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 3. Allegretto grazioso
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Sonata for Clarinet and Piano No. 1 in F Minor, Op. 120 No. 1: 4. Vivace
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  date published: 2026-07-31T15:20:15Z
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Eisler, Ravel & Jörg Widmann: Duos
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Messiaen: Quatuor pour la fin du temps, I/22 (Live)
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Jörg Widmann: Arche (Live at Elbphilharmonie, Hamburg / 2017)
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Jörg Widmann: Drittes Labyrinth | Polyphone Schatten
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Mendelssohn: Symphony No. 3 in A Minor "Scottish" & The Hebrides - Jörg Widmann: 180 Beats per Minute & Fantasie
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track: Viola Concerto: III. Poco vivo subito
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  audio: String Quartet No. 3 "Jagdquartett"

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track: Clarinet Quintet in A Major, K. 581: IV. Allegretto con variazioni
track: String Quartet No.15 in D Minor, K. 421: I. Allegro moderato
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String Quartet No.15 in D Minor, K. 421: III. Menuetto - Trio (Allegretto)
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Widmann: Works for Ensemble
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Widmann: Piano Works
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Widmann: Violin Concerto - Antiphon - Insel der Sirenen
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Rihm Edition, Vol. 6
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introspective | retrospective
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Jörg Widmann: Elegie
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Dvořák: String Sextet in A Major, Op. 48 / Schumann: 5 Stücke im Volkston, Op. 102; Fantasiestücke, Op. 73 / Reimann: Solo for Clarinet (Live)
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Schubert: Octet in F Major, D. 803 / Widmann: Octet in F Major
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Reimann, A.: Cantus / Ollea / Solo for Clarinet / … Ni Una Sombra / Arietta
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Widmann: String Quartets
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Rihm: 4 Studien zu einem Klarinettenquintett - 4 Male
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Genzmer: Kammermusik
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7 Capricci: VII. Zirkusparade
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Mozart: Clarinet Quintet, K. 581: II. Larghetto
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