Erwin Schulhoff
type: MusicGroup
genre: chamber music
description: Erwin Schulhoff (; 8 June 189418 August 1942) was an Austro-Czech composer and pianist. He was one of the figures in the generation of European musicians whose successful careers were prematurely term
popularity: 17
followers: 3339
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album: Erwin Schulhoff & Erich Wolfgang Korngold: String Quartets (Breaking the Silence)
  type: MusicAlbum
  date published: 2018-02-23
album: Die Abflussrohre spuckten ihre Eisblöcke wie abgelutschte Bonbons auf den Gehsteig
  type: MusicAlbum
  date published: 2016
album: Schulhoff: Solo & Ensemble Works, Vol. 2
  type: MusicAlbum
  date published: 2006-01-01
album: Schulhoff: Ensemble Works, Vol. 1
  type: MusicAlbum
  date published: 2006-01-01
album: Schulhoff: Suite Dansante En Jazz / Piano Sonata No. 1 / Hot Music
  type: MusicAlbum
  date published: 2003-02-01
album: Schulhoff: Flammen, WV 93 (Live)
  type: MusicAlbum
  date published: 2021-04-02
album: Schulhoff: Symphonies Nos. 1, 2, 3 & 5; Concerto for String Quartet and Winds, WV 97
  type: MusicAlbum
  date published: 2024-04-05
album: Ogelala WV 64 - Serenade Op.18 WV 36
  type: MusicAlbum
  date published: 1996-01-01
album: Erwin Schulhoff: Piano Concerto, Op. 11 & Der Bürger als Edelmann Suite
  type: MusicAlbum
  date published: 2022-05-06
album: Schulhoff: String Sextet & Strauss: Metamorphosen
  type: MusicAlbum
  date published: 2012-02-01
album: Erwin Schulhoff: Brückenbauer in die Neue Zeit
  type: MusicAlbum
  date published: 2010-06-18
album: Schulhoff: Brückenbauer in die neue Zeit
  type: MusicAlbum
  date published: 2011-02-01
album: Schulhoff: Complete Music for Violin and Piano
  type: MusicAlbum
  date published: 2016-11-01
album: Schulhoff, E.: Double Concerto for Flute, Piano and Strings / Symphony No. 2 / Mautner, M.: United Colours
  type: MusicAlbum
  date published: 2009-10-01
album: Schulhoff: Symphonies Nos. 2 and 5 & Piano Concerto
  type: MusicAlbum
  date published: 2019-01-18
  track: Suite, Op. 37: I. Ragtime
  track: Suite, Op. 37: II. Valse Boston
  track: String Sextet, Op. 45: IV. Molto adagio
  track: Symphony No. 5: II. Adagio
album: E. Schulhoff: Concertos
  type: MusicAlbum
  date published: 2014-05-06
album: Schulhoff: Chamber Music
  type: MusicAlbum
  date published: 2016-10-14
album: Erwin Schulhoff: Shapeshifter
  type: MusicAlbum
  date published: 2022-10-07
album: Erwin Schulhoff: Klavierwerke
  type: MusicAlbum
  date published: 2022-01-14
album: Erwin Schulhoff: Ironien
  type: MusicAlbum
  date published: 2019-11-15
album: Schulhoff Complete String Quartets
  type: MusicAlbum
  date published: 2016-09-30
album: Forbidden Music
  type: MusicAlbum
  date published: 2016-09-09
album: Schulhoff: Piano Works, Vol. 3
  type: MusicAlbum
  date published: 2016-04-01
album: Musica e Regime
  type: MusicAlbum
  date published: 2016-02-13
album: Schulhoff: Landschaften, Op. 26, Menschheit, Op. 28 & Le Bourgeois gentilhomme
  type: MusicAlbum
  date published: 2016-01-01
album: Erwin Schulhoff: Music for Violin and Piano
  type: MusicAlbum
  date published: 2015-06-09
album: Erwin Schulhoff: Music for Piano Solo
  type: MusicAlbum
  date published: 2014-11-11
album: Erwin Schulhoff: His Complete Piano Recordings
  type: MusicAlbum
  date published: 2014-08-05
album: Schulhoff: Piano Works, Vol. 2
  type: MusicAlbum
  date published: 2013-06-04
album: Schulhoff: Complete Works for Violin & Piano
  type: MusicAlbum
  date published: 2013-06-01
album: Vogler Schulhoff Quartett
  type: MusicAlbum
  date published: 2013-01-29
album: Vogler Quartett spielt Schulhoff
  type: MusicAlbum
  date published: 2012-07-20
album: Erwin Schulhoff - Richard Strauss: Six to seven
  type: MusicAlbum
  date published: 2012-05-01
album: Schulhoff: Piano Works, Vol. 1
  type: MusicAlbum
  date published: 2012-03-06
album: Schulhoff: Violin Sonatas
  type: MusicAlbum
  date published: 2011-02-28
album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
  track: String Quartet No. 1: I. Presto con fuoco
  track: String Quartet No. 1: II. Allegretto con moto e con malinconia grotesca
  track: 5 Pieces: No. 1. Alla Valse Viennese
  track: 5 Pieces: No. 4. Alla Tango Milonga
  track: 5 Pieces: No. 5. Alla Tarantella
  track: String Quartet No. 2: II. Tema con variazioni: Moderato
  track: String Quartet No. 1: III. Allegro giocoso alla slovacca
  track: String Quartet No. 1: IV. Andante molto sostenuto
  track: 5 Pieces: No. 2. Alla Serenata
  track: 5 Pieces: No. 3. Alla Czeca
  track: String Quartet No. 2: I. Allegro agitato
album: The Retrospective Edition, Vol. 5
  type: MusicAlbum
  date published: 2009-09-01
album: Schulhoff, E.: Piano Music
  type: MusicAlbum
  date published: 2009-01-01
album: Piano Rarities: Schulhoff
  type: MusicAlbum
  date published: 2009
album: Schulhoff: String Quartets Vol. 2
  type: MusicAlbum
  date published: 2006-04-01
album: Ervín Schulhoff: Chamber Music, Czech Degenerate Music, Vol. IV
  type: MusicAlbum
  date published: 2004-06-01
album: Schulhoff, E.: Symphonies Nos. 2 and 5 / Suite
  type: MusicAlbum
  date published: 2004-01-01
track: Cinq Études de jazz: III. Chanson
track: Duo for Violin and Cello: II. Zingaresca: Allegro giocoso

Suite, Op. 37: I. Ragtime
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Suite, Op. 37: II. Valse Boston
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String Sextet, Op. 45: IV. Molto adagio
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Symphony No. 5: II. Adagio
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String Quartet No. 1: I. Presto con fuoco
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
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/HKI190905401
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a7316f8bffd87bd1fa51a076c164f6d0ca65e9ce93504f45331f71e03883a. 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/HKI190905401.
  date published: 2026-07-08T03:22:41Z
audio: String Quartet No. 1: I. Presto con fuoco
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.227
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.491
  additional property: Energy
    type: PropertyValue
    value: 0.537
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.949
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.301
  additional property: Liveness
    type: PropertyValue
    value: 0.166
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.89
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.922
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

String Quartet No. 1: II. Allegretto con moto e con malinconia grotesca
type: MusicRecording
duration: PT4M20S
duration ms: 260333
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
isrc code: HKI190905402
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:57:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28d2669045ca3b55601e73213e1e33a712ab3cbbf77b388a13890a6abd9a9fc4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
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/HKI190905402
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d2669045ca3b55601e73213e1e33a712ab3cbbf77b388a13890a6abd9a9fc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190905402.
  date published: 2026-07-08T08:56:20Z
audio: String Quartet No. 1: II. Allegretto con moto e con malinconia grotesca
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.264
  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: 0.267
  additional property: Energy
    type: PropertyValue
    value: 0.03
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.903
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.062
  additional property: Liveness
    type: PropertyValue
    value: 0.119
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.106
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.874
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

5 Pieces: No. 1. Alla Valse Viennese
type: MusicRecording
duration: PT2M5S
duration ms: 125266
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
isrc code: HKI190905405
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:19:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x84ec149019a53a28a63d994f966db40ea34688f148306186fbcf02fee3c9a59f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190905405
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956889
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ec149019a53a28a63d994f966db40ea34688f148306186fbcf02fee3c9a59f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI190905405.
  date published: 2026-07-06T06:56:49Z
audio: 5 Pieces: No. 1. Alla Valse Viennese
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.854
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.575
  additional property: Energy
    type: PropertyValue
    value: 0.211
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.152
  additional property: Liveness
    type: PropertyValue
    value: 0.123
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.211
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.78
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

5 Pieces: No. 4. Alla Tango Milonga
type: MusicRecording
duration: PT4M12S
duration ms: 252680
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
isrc code: HKI190905408
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T00:38:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x055da46f72b72ddd0a6fe13216e84852469c40ed31c9259ee38c5ce4c744a0f7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
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/HKI190905408
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055da46f72b72ddd0a6fe13216e84852469c40ed31c9259ee38c5ce4c744a0f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190905408.
  date published: 2026-07-08T03:53:27Z
audio: 5 Pieces: No. 4. Alla Tango Milonga
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.95
  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: 0.323
  additional property: Energy
    type: PropertyValue
    value: 0.095
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.021
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.321
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.395
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

5 Pieces: No. 5. Alla Tarantella
type: MusicRecording
duration: PT2M45S
duration ms: 165146
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
isrc code: HKI190905409
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T09:47:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x771a2d447d9bc48fcaf0cd0bfb5429bee916b8db35a54aeaa0f2bccfb30e9f0b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190905409
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a2d447d9bc48fcaf0cd0bfb5429bee916b8db35a54aeaa0f2bccfb30e9f0b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKI190905409.
  date published: 2026-07-02T11:34:59Z
audio: 5 Pieces: No. 5. Alla Tarantella
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.669
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.408
  additional property: Energy
    type: PropertyValue
    value: 0.347
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.932
  additional property: Liveness
    type: PropertyValue
    value: 0.239
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.472
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.228
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

String Quartet No. 2: II. Tema con variazioni: Moderato
type: MusicRecording
duration: PT6M30S
duration ms: 390853
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
isrc code: HKI190905411
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:17:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e26460a4c29763391a3a8d0b6c4bd317f964debdd16a5bb0d8eb43ff37197c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
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/HKI190905411
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26460a4c29763391a3a8d0b6c4bd317f964debdd16a5bb0d8eb43ff37197c5. 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/HKI190905411.
  date published: 2026-07-08T03:22:41Z
audio: String Quartet No. 2: II. Tema con variazioni: Moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.396
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.195
  additional property: Energy
    type: PropertyValue
    value: 0.078
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.107
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.244
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

String Quartet No. 1: III. Allegro giocoso alla slovacca
type: MusicRecording
duration: PT3M10S
duration ms: 190133
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe714a0a4999ad72e42c3db83b17fb631860c053aeb2ee3021c740afcd060739c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HKI190905403.
  date published: 2026-07-30T12:06:10Z
audio: String Quartet No. 1: III. Allegro giocoso alla slovacca
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.094
  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: 0.537
  additional property: Energy
    type: PropertyValue
    value: 0.243
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.957
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.467
  additional property: Liveness
    type: PropertyValue
    value: 0.065
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.341
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.578
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: HKI190905403
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  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

String Quartet No. 1: IV. Andante molto sostenuto
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duration: PT7M3S
duration ms: 423840
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce7309d19ef4f8cdbe262291fe7b56926b1fb856db8e1045e1b2cd7652f43ef. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/HKI190905404.
  date published: 2026-08-01T03:13:03Z
audio: String Quartet No. 1: IV. Andante molto sostenuto
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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

5 Pieces: No. 2. Alla Serenata
type: MusicRecording
duration: PT2M52S
duration ms: 172866
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778f057d45554e6cb167dd65c6164b19c1ec87f1c2956c77307f46b734fe5ec4. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HKI190905406.
  date published: 2026-07-30T09:37:10Z
audio: 5 Pieces: No. 2. Alla Serenata
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additional property: OTSBitcoinBlockVerifyURL
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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

5 Pieces: No. 3. Alla Czeca
type: MusicRecording
duration: PT1M41S
duration ms: 101786
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
  type: MusicAlbum
  date published: 2010-04-27
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b383839484a0c93a589b6a5fb63f1906c3834808021049dfc8cee824137fa. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190905407.
  date published: 2026-07-31T02:19:15Z
audio: 5 Pieces: No. 3. Alla Czeca
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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

String Quartet No. 2: I. Allegro agitato
type: MusicRecording
duration: PT3M30S
duration ms: 210520
explicit: false
by artist: Erwin Schulhoff
by artist: Aviv Quartet
in album: Schulhoff: String Quartets Nos. 1 and 2 - 5 Pieces for String Quartet
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ced411716fe7d6b26e92438f6e704f3ed94b1e3178d76afa930840c3cb220d. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/HKI190905410.
  date published: 2026-07-31T20:42:35Z
audio: String Quartet No. 2: I. Allegro agitato
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isrc code: HKI190905410
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

Cinq Études de jazz: III. Chanson
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duration: PT2M36S
duration ms: 156760
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by artist: Erwin Schulhoff
by artist: Quatuor Manfred
in album: Bye-bye Berlin
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popularity: 2
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Cinq Études de jazz: III. Chanson
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Duo for Violin and Cello: II. Zingaresca: Allegro giocoso
type: MusicRecording
duration: PT2M55S
duration ms: 175626
explicit: false
by artist: Erwin Schulhoff
by artist: Gernot Süssmuth
by artist: Hans-Jakob Eschenburg
in album: Composers In Exile - Zemlinsky, A. Von / Schreker, F. / Schulhoff, E. / Ullmann, V. / Hindemith, P. / Schoenberg, A. / Milhaud, D.
  type: MusicAlbum
  date published: 2004-01-01
popularity: 1
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9644b8ffaadab9d564a8e71f56ea7da8b5fe04719a1b94f19d6fda51a41945. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US2TL0943806.
  date published: 2026-07-31T06:42:11Z
audio: Duo for Violin and Cello: II. Zingaresca: Allegro giocoso
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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