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genre: chamber music
genre: classical
description: Péter Szabó (13 April 1899 – 21 September 1963) was a Hungarian football manager and player. Club career Born in Budapest, Szabó played with MTK Budapest FC where he won three consecutive championshi
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album: Beethoven For Relaxation
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album: Beethoven For Inspiration
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album: Relaxing Beethoven
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album: Koessler: Trio Suite / Piano Quintet in F Major / Moor: Cello Sonata No. 2, Op. 55
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album: Celebrate Beethoven: Chamber
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album: Varma röda stunder
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      date published: 2026-06-13T13:32:09Z
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album: Beethoven: 30 of the Best
album: Beethoven: Adagio
album: 50 of the Best: Beethoven
album: Beethoven: Violin Concerto / Sextet
album: My First Beethoven Album
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album: Csaba Szabó: Chamber Music for Strings and Winds
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album: Szabo: Chamber Music and Choral Works
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album: Gemesi: Church at Dawn / Portrait of Istvan Macsai / Pavane Pour Une Infante Defunte / Clods / Duo
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album: Dohnanyi: Cello Sonata / Lajtha: Cello Sonata / Cello Concerto
album: Chopin: Chamber Music
album: Sötétség
album: Beautiful When You Smile
album: Beethoven - The Early Years
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album: Seiber: Chamber Works and Songs
album: Brahms: Piano Trio, Op. 8 - Dvorak: Dumky Trio, Op. 90
album: Csaba Szabó: Memorial Concert at The French Institute in Budapest

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My First Beethoven Album
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Pleyel: String Concertos (Complete), Vol. 2
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Pleyel, I.J.: Chamber Music
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Pleyel: String Concertos (Complete), Vol. 1 - Cello Concertos
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Csaba Szabó: Chamber Music for Strings and Winds
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Beethoven: Chamber Music for Horns, Winds and Strings
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date published: 1995-05-17
track: Septet in E-Flat Major, Op. 20: I. Adagio - Allegro on brio
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  audio: Septet in E-Flat Major, Op. 20: III. Tempo di menuetto
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track: Septet in E-Flat Major, Op. 20: V. Scherzo: Allegro molto e vivace
track: Septet in E-Flat Major, Op. 20: VI. Andante con moto alla marcia - Presto
track: Wind Quintet in E-Flat Major, Hess 19: I. Allegro
track: Wind Quintet in E-Flat Major, Hess 19: II. Adagio maestoso
track: Wind Quintet in E-Flat Major, Hess 19: III. Minuetto
track: Sextet in E-Flat Major, Op. 81b: I. Allegro con brio
track: Sextet in E-Flat Major, Op. 81b: II. Adagio
track: Sextet in E-Flat Major, Op. 81b: III. Rondo

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value: https://explorer.copyrightchains.com/tx/0x817596892b6f2389710cf80a058cb590889e796f17a6a3643cdec1b2e9bd464e

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956302

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956302

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215604

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:30:09Z

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 0x817596892b6f2389710cf80a058cb590889e796f17a6a3643cdec1b2e9bd464e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215604.
date published: 2026-07-02T03:30:09Z

Septet in E-Flat Major, Op. 20: IV. Tema con variazioni: Andante
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 127.709
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.38
additional property: Energy
  type: PropertyValue
  value: 0.053
additional property: Speechiness
  type: PropertyValue
  value: 0.043
additional property: Acousticness
  type: PropertyValue
  value: 0.984
additional property: Instrumentalness
  type: PropertyValue
  value: 0.692
additional property: Liveness
  type: PropertyValue
  value: 0.055
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.328
additional property: Loudness (dB)
  type: PropertyValue
  value: -27.119
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

Septet in E-Flat Major, Op. 20: V. Scherzo: Allegro molto e vivace
type: MusicRecording
duration: PT3M4S
duration ms: 184866
explicit: false
by artist: Ludwig van Beethoven
by artist: József Balogh
by artist: Jozsef Vajda
by artist: Jeno Kevehazi
by artist: Ildiko Hegyi
by artist: Gyözö Máthé
by artist: Péter Szabó
by artist: Istvan Toth
in album: Beethoven: Chamber Music for Horns, Winds and Strings
  type: MusicAlbum
  date published: 1995-05-17
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199215605
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T18:54:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x134b5491bd756153df33c99007c792b2afbeff7c5e80405612a4097826ce6ae5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215605
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b5491bd756153df33c99007c792b2afbeff7c5e80405612a4097826ce6ae5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215605.
  date published: 2026-06-13T13:32:09Z
audio: Septet in E-Flat Major, Op. 20: V. Scherzo: Allegro molto e vivace
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.524
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.48
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.966
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.154
  additional property: Liveness
    type: PropertyValue
    value: 0.153
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.57
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.794
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Septet in E-Flat Major, Op. 20: VI. Andante con moto alla marcia - Presto
type: MusicRecording
duration: PT7M45S
duration ms: 465373
explicit: false
by artist: Ludwig van Beethoven
by artist: József Balogh
by artist: Jozsef Vajda
by artist: Jeno Kevehazi
by artist: Ildiko Hegyi
by artist: Gyözö Máthé
by artist: Péter Szabó
by artist: Istvan Toth
in album: Beethoven: Chamber Music for Horns, Winds and Strings
  type: MusicAlbum
  date published: 1995-05-17
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199215606
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T17:54:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd634d61926eabfda108c76314480cd5ead4e490f45857b210d62f4ee5ed0e2e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215606
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd634d61926eabfda108c76314480cd5ead4e490f45857b210d62f4ee5ed0e2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215606.
  date published: 2026-07-02T03:30:09Z
audio: Septet in E-Flat Major, Op. 20: VI. Andante con moto alla marcia - Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.017
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.284
  additional property: Energy
    type: PropertyValue
    value: 0.101
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.851
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.209
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.257
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wind Quintet in E-Flat Major, Hess 19: I. Allegro
type: MusicRecording
duration: PT10M39S
duration ms: 639933
explicit: false
by artist: Ludwig van Beethoven
by artist: Ottó Rácz
by artist: Jozsef Vajda
by artist: Sándor Berki
by artist: János Keveházi
by artist: Jeno Kevehazi
in album: Beethoven: Chamber Music for Horns, Winds and Strings
  type: MusicAlbum
  date published: 1995-05-17
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199215607
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T09:03:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb9d2469271945897b56a60cb4e835bd2ca14d43628231b8d78330c5d931cef5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215607
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d2469271945897b56a60cb4e835bd2ca14d43628231b8d78330c5d931cef5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215607.
  date published: 2026-07-02T03:30:09Z
audio: Wind Quintet in E-Flat Major, Hess 19: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.651
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.14
  additional property: Energy
    type: PropertyValue
    value: 0.043
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.896
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.09
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.731
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wind Quintet in E-Flat Major, Hess 19: II. Adagio maestoso
type: MusicRecording
duration: PT3M52S
duration ms: 232333
explicit: false
by artist: Ludwig van Beethoven
by artist: Ottó Rácz
by artist: Jozsef Vajda
by artist: Sándor Berki
by artist: János Keveházi
by artist: Jeno Kevehazi
in album: Beethoven: Chamber Music for Horns, Winds and Strings
  type: MusicAlbum
  date published: 1995-05-17
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199215608
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T08:11:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1924e9d4a687c99697556f210600c788743cc30ce2c572833f0d5c777b8b608
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215608
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0xc1924e9d4a687c99697556f210600c788743cc30ce2c572833f0d5c777b8b608. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199215608.
  date published: 2026-06-13T12:47:07Z
audio: Wind Quintet in E-Flat Major, Hess 19: II. Adagio maestoso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 62.36
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.15
  additional property: Energy
    type: PropertyValue
    value: 0.023
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.936
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.066
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.527
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wind Quintet in E-Flat Major, Hess 19: III. Minuetto
type: MusicRecording
duration: PT1M34S
duration ms: 94893
explicit: false
by artist: Ludwig van Beethoven
by artist: Ottó Rácz
by artist: Jozsef Vajda
by artist: Sándor Berki
by artist: János Keveházi
by artist: Jeno Kevehazi
in album: Beethoven: Chamber Music for Horns, Winds and Strings
  type: MusicAlbum
  date published: 1995-05-17
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199215609
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T22:31:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x567e5bb939d787c20e4a053c500aae4dd903a245e8fef0a2b1587aa784075da2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215609
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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 0x567e5bb939d787c20e4a053c500aae4dd903a245e8fef0a2b1587aa784075da2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI199215609.
  date published: 2026-06-13T15:41:10Z
audio: Wind Quintet in E-Flat Major, Hess 19: III. Minuetto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.43
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.432
  additional property: Energy
    type: PropertyValue
    value: 0.024
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.533
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.618
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sextet in E-Flat Major, Op. 81b: I. Allegro con brio
type: MusicRecording
duration: PT7M49S
duration ms: 469040
explicit: false
by artist: Ludwig van Beethoven
by artist: János Keveházi
by artist: Jeno Kevehazi
by artist: Ildiko Hegyi
by artist: Peter Popa
by artist: Gyözö Máthé
by artist: Péter Szabó
in album: Beethoven: Chamber Music for Horns, Winds and Strings
  type: MusicAlbum
  date published: 1995-05-17
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199215610
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:38:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4756730163e5803584dd7e6ad75af03232b5adf37e8eeb228b2983aebf636243
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/HKI199215610
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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
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  date published: 2026-07-02T03:55:08Z
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Sextet in E-Flat Major, Op. 81b: II. Adagio
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Sextet in E-Flat Major, Op. 81b: III. Rondo
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