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description: Galina Ivanovna Ustvolskaya ( ) (17 June 1919 – 22 December 2006), was a Russian composer of classical music. Known as "the lady with the hammer", her music has been described as demanding "everythin
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album: Ustvolskaya, Silvestrov & Kancheli: Works for Piano & Orchestra
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T12:47:07Z
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  track: 4 Postludes for Piano & String Orchestra: No. 4. Larghetto, con moto (poco rubato)
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album: Gubaidulina, Ustvolskaya, Górecki & Pelécis : Piano Concertos (Apex)
album: Alexandre Rabinovitch-Barakovsky: Anthology of Archaic Rituals - in Search of the Center
album: Silvestrov, Pärt, Ustvolskaya: Misterioso
album: Galina Ustvolskaya: Piano Sonatas Nos. 1 - 6
album: Galina Ustvolskaya: 2
album: Ustvolskaya: Suites & Poems
album: Ustvolskaya: Complete Music for Violin & Piano
album: ステート オヴ マインド
album: ウストヴォーリスカヤ：ピアノ・ソナタ第1-6番、12の前奏曲
album: Ustvolskaya & Schnittke: Works for Cello & Piano
album: Ustwolskaja: Violin & Piano
album: I (Remastered)
album: Russian Piano Music Series, Vol. 11: Galina Ustvolskaya
album: Galina Ustvolskaya
album: Ustvolskaya: Complete Works for Piano
album: Ustvolskaya: Complete Piano Music
album: Ustvolskaya: Komposition Nr. 2 "Dies irae" / Sonate Nr. 6 / Großes Duett
album: Galina Ustvolskaya: Piano Sonatas 1-6
album: Ustvolskaya: Compositions I, II & III
album: Ustvolskaya: Concerto for Piano, Strings & Timpani (Live)
album: Galina Ustvolskaya: Piano Sonatas
album: The Barton Workshop plays Galina Ustvolskaya
album: Galina Ustvolskaya: Chamber Music
album: Galina Ustvolskaya: 1
album: Liszt Inspections
album: Postscriptum
album: Piazzolla, Ustvolskaya, Schnittke: Works for Cello (Russia, 1996)
album: Arden, David - Contemporary Piano Music: Piano Music By Part, Gorecki And Ustvolskaya
album: Mravinsky Edition, Vol. 4
album: Introduction to Female Composers
album: Webern, Silvestrov, Boulez:Variations
album: Women Composers
album: ノクターン(夜想曲) 夜の調べ
album: Beethoven: Piano Concerto No. 2 - Ustvolskaya: Concerto for Piano, Strings & Timpani (Live)
album: Resistance: Conflict, Complexity, Conversations
album: Salzburg Biennale: Festival for New Music 2009
album: Stravinsky: Petrushka; Prokofiev: Piano sonata No. 5 & Ustvolskaya: Piano sonata No. 2
album: Reflections
album: Dream Images

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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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subject of: OpenTimestamps Proof of Existence
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  audio: Pelécis : Concertino bianco for Piano in C major : I Con intenerimento
track: Pelécis : Concertino bianco for Piano in C major : II Con venerazione
track: Pelécis : Concertino bianco for Piano in C major : III Con anima

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Pelécis : Concertino bianco for Piano in C major : I Con intenerimento
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Pelécis : Concertino bianco for Piano in C major : II Con venerazione
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subject of: OpenTimestamps Proof of Existence
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Alexandre Rabinovitch-Barakovsky: Anthology of Archaic Rituals - in Search of the Center
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Silvestrov, Pärt, Ustvolskaya: Misterioso
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T22:27:30Z
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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track: Spiegel im Spiegel - For Clarinet And Piano: 1. Spiegel im Spiegel
track: Trio For Clarinet, Violin And Piano: 1. Espressivo

OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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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

OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Post Scriptum - Sonata For Violin And Piano: 3. Allegro Vivace, Con Moto
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Spiegel im Spiegel - For Clarinet And Piano: 1. Spiegel im Spiegel
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Spiegel im Spiegel - For Clarinet And Piano: 1. Spiegel im Spiegel
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Trio For Clarinet, Violin And Piano: 1. Espressivo
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  subject of: OpenTimestamps Proof of Existence
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Ustvolskaya: Suites & Poems
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Ustvolskaya: Complete Music for Violin & Piano
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ステート オヴ マインド
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ウストヴォーリスカヤ：ピアノ・ソナタ第1-6番、12の前奏曲
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Ustvolskaya & Schnittke: Works for Cello & Piano
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Ustwolskaja: Violin & Piano
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I (Remastered)
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Russian Piano Music Series, Vol. 11: Galina Ustvolskaya
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Galina Ustvolskaya
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Ustvolskaya: Complete Works for Piano
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track: Piano Sonata No. 5: II. —
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  subject of: OpenTimestamps Proof of Existence
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OpenTimestamps Proof of Existence
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date published: 2026-07-29T19:35:34Z

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  subject of: OpenTimestamps Proof of Existence
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      value: 0.43
    additional property: Speechiness
      type: PropertyValue
      value: 0.364
    additional property: Acousticness
      type: PropertyValue
      value: 0.956
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.824
    additional property: Liveness
      type: PropertyValue
      value: 0.11
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.338
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.682
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Ustvolskaya: Komposition Nr. 2 "Dies irae" / Sonate Nr. 6 / Großes Duett
type: MusicAlbum
date published: 2011-12-09

Galina Ustvolskaya: Piano Sonatas 1-6
type: MusicAlbum
date published: 2011-01-31

Ustvolskaya: Compositions I, II & III
type: MusicAlbum
date published: 1995-01-01
track: Composition I: Dona nobis pacem: I
  type: MusicRecording
  duration: PT6M51S
  duration ms: 411000
  explicit: false
  by artist: Galina Ustvolskaya
  by artist: Schönberg Ensemble
  by artist: Reinbert de Leeuw
  in album: Ustvolskaya: Compositions I, II & III
    type: MusicAlbum
    date published: 1995-01-01
  genre: contemporary-classical
  genre: russian-modern-classical
  genre: russian-contemporary-classical
  isrc code: NLA509407501
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T00:38:27+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x62e607e3d22f583a4d8b9b174b32aea0a1a1e656e7767e48f424a6652ac45474
  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/NLA509407501
  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 0x62e607e3d22f583a4d8b9b174b32aea0a1a1e656e7767e48f424a6652ac45474. 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/NLA509407501.
    date published: 2026-07-08T03:20:19Z
  audio: Composition I: Dona nobis pacem: I
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 111.031
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.532
    additional property: Energy
      type: PropertyValue
      value: 0.087
    additional property: Speechiness
      type: PropertyValue
      value: 0.072
    additional property: Acousticness
      type: PropertyValue
      value: 0.956
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.076
    additional property: Liveness
      type: PropertyValue
      value: 0.077
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.125
    additional property: Loudness (dB)
      type: PropertyValue
      value: -32.053
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Composition I: Dona nobis pacem: II
  type: MusicRecording
  duration: PT5M12S
  duration ms: 312000
  explicit: false
  by artist: Galina Ustvolskaya
  by artist: Schönberg Ensemble
  by artist: Reinbert de Leeuw
  in album: Ustvolskaya: Compositions I, II & III
    type: MusicAlbum
    date published: 1995-01-01
  genre: contemporary-classical
  genre: russian-modern-classical
  genre: russian-contemporary-classical
  isrc code: NLA509407502
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:42:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x61bf3028ff2517500dfbcd0d6b53f8c22d26704d68400b2a67930810995b95d1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  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/NLA509407502
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bf3028ff2517500dfbcd0d6b53f8c22d26704d68400b2a67930810995b95d1. 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/NLA509407502.
    date published: 2026-07-08T03:22:41Z
  audio: Composition I: Dona nobis pacem: II
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.837
    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: 0.215
    additional property: Energy
      type: PropertyValue
      value: 0
    additional property: Speechiness
      type: PropertyValue
      value: 0.066
    additional property: Acousticness
      type: PropertyValue
      value: 0.894
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.41
    additional property: Liveness
      type: PropertyValue
      value: 0.079
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.038
    additional property: Loudness (dB)
      type: PropertyValue
      value: -34.188
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Composition I: Dona nobis pacem: III
  type: MusicRecording
  duration: PT4M3S
  duration ms: 243000
  explicit: false
  by artist: Galina Ustvolskaya
  by artist: Schönberg Ensemble
  by artist: Reinbert de Leeuw
  in album: Ustvolskaya: Compositions I, II & III
    type: MusicAlbum
    date published: 1995-01-01
  genre: contemporary-classical
  genre: russian-modern-classical
  genre: russian-contemporary-classical
  isrc code: NLA509407503
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Composition I: Dona nobis pacem: III
track: Composition II: Dies irae: I
track: Composition II: Dies irae: II
track: Composition II: Dies irae: III
track: Composition II: Dies irae: IV
track: Composition II: Dies irae: V
track: Composition II: Dies irae: VIII

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T17:55:38+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x5f91191a3c40c66085f7e68b8383488d49f01569cbff5d7179940640a946d4cf

OTSHash
type: PropertyValue

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/NLA509407503

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 0x5f91191a3c40c66085f7e68b8383488d49f01569cbff5d7179940640a946d4cf. 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/NLA509407503.
date published: 2026-07-08T03:20:19Z

Composition I: Dona nobis pacem: III
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 110.83
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.154
additional property: Energy
  type: PropertyValue
  value: 0
additional property: Speechiness
  type: PropertyValue
  value: 0.061
additional property: Acousticness
  type: PropertyValue
  value: 0.665
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.078
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.128
additional property: Loudness (dB)
  type: PropertyValue
  value: -52.148
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Minor

Composition II: Dies irae: I
type: MusicRecording
duration: PT1M32S
duration ms: 92000
explicit: false
by artist: Galina Ustvolskaya
by artist: Schönberg Ensemble
by artist: Reinbert de Leeuw
in album: Ustvolskaya: Compositions I, II & III
  type: MusicAlbum
  date published: 1995-01-01
genre: contemporary-classical
genre: russian-modern-classical
genre: russian-contemporary-classical
isrc code: NLA509407504
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:53:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1df9ce451f1b731882a06eef7ada9c89bd5efba7414932c578fe2f7206b44091
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/NLA509407504
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 0x1df9ce451f1b731882a06eef7ada9c89bd5efba7414932c578fe2f7206b44091. 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/NLA509407504.
  date published: 2026-07-08T03:20:19Z
audio: Composition II: Dies irae: I
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.273
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.603
  additional property: Energy
    type: PropertyValue
    value: 0.002
  additional property: Speechiness
    type: PropertyValue
    value: 0.183
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.462
  additional property: Liveness
    type: PropertyValue
    value: 0.086
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.613
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.543
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Composition II: Dies irae: II
type: MusicRecording
duration: PT3M10S
duration ms: 190000
explicit: false
by artist: Galina Ustvolskaya
by artist: Schönberg Ensemble
by artist: Reinbert de Leeuw
in album: Ustvolskaya: Compositions I, II & III
  type: MusicAlbum
  date published: 1995-01-01
genre: contemporary-classical
genre: russian-modern-classical
genre: russian-contemporary-classical
isrc code: NLA509407505
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:11:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x188f0898e58e5e328829a196331969d80ccafbee4910e5c8bbb3dd67629e1a54
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960389
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960389
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509407505
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T10:20:10Z
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 0x188f0898e58e5e328829a196331969d80ccafbee4910e5c8bbb3dd67629e1a54. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/NLA509407505.
  date published: 2026-07-31T10:20:10Z
audio: Composition II: Dies irae: II
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.723
  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: 0.301
  additional property: Energy
    type: PropertyValue
    value: 0
  additional property: Speechiness
    type: PropertyValue
    value: 0.243
  additional property: Acousticness
    type: PropertyValue
    value: 0.93
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.989
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.072
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.582
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Composition II: Dies irae: III
type: MusicRecording
duration: PT3M13S
duration ms: 193000
explicit: false
by artist: Galina Ustvolskaya
by artist: Schönberg Ensemble
by artist: Reinbert de Leeuw
in album: Ustvolskaya: Compositions I, II & III
  type: MusicAlbum
  date published: 1995-01-01
genre: contemporary-classical
genre: russian-modern-classical
genre: russian-contemporary-classical
isrc code: NLA509407506
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T17:20:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca8dc2dbffab50e33d5ad477d3997843cab4889a7f484c0b44b7b6b9e520957a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509407506
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8dc2dbffab50e33d5ad477d3997843cab4889a7f484c0b44b7b6b9e520957a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLA509407506.
  date published: 2026-07-31T17:29:52Z
audio: Composition II: Dies irae: III
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.377
  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: 0.775
  additional property: Energy
    type: PropertyValue
    value: 0.158
  additional property: Speechiness
    type: PropertyValue
    value: 0.502
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.597
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.664
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Composition II: Dies irae: IV
type: MusicRecording
duration: PT0M54S
duration ms: 54000
explicit: false
by artist: Galina Ustvolskaya
by artist: Schönberg Ensemble
by artist: Reinbert de Leeuw
in album: Ustvolskaya: Compositions I, II & III
  type: MusicAlbum
  date published: 1995-01-01
genre: contemporary-classical
genre: russian-modern-classical
genre: russian-contemporary-classical
isrc code: NLA509407507
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:59:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0629d651afaadaddc423401d260da4239991e5c824ab5313c92ea1c0a43f882f
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/NLA509407507
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 0x0629d651afaadaddc423401d260da4239991e5c824ab5313c92ea1c0a43f882f. 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/NLA509407507.
  date published: 2026-07-08T03:20:19Z
audio: Composition II: Dies irae: IV
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 102.239
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.556
  additional property: Energy
    type: PropertyValue
    value: 0.215
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.891
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.91
  additional property: Liveness
    type: PropertyValue
    value: 0.306
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.111
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.128
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Composition II: Dies irae: V
type: MusicRecording
duration: PT1M56S
duration ms: 116333
explicit: false
by artist: Galina Ustvolskaya
by artist: Schönberg Ensemble
by artist: Reinbert de Leeuw
in album: Ustvolskaya: Compositions I, II & III
  type: MusicAlbum
  date published: 1995-01-01
genre: contemporary-classical
genre: russian-modern-classical
genre: russian-contemporary-classical
isrc code: NLA509407508
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:57:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5bed271d7b8eb7934eb7f2c5a5e4e144ad50733b413acf1fef60de40e6ce588d
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/NLA509407508
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 0x5bed271d7b8eb7934eb7f2c5a5e4e144ad50733b413acf1fef60de40e6ce588d. 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/NLA509407508.
  date published: 2026-07-08T03:20:19Z
audio: Composition II: Dies irae: V
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.197
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.612
  additional property: Energy
    type: PropertyValue
    value: 0.408
  additional property: Speechiness
    type: PropertyValue
    value: 0.24
  additional property: Acousticness
    type: PropertyValue
    value: 0.924
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.663
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.343
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.039
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Composition II: Dies irae: VIII
type: MusicRecording
duration: PT1M1S
duration ms: 61093
explicit: false
by artist: Galina Ustvolskaya
by artist: Schönberg Ensemble
by artist: Reinbert de Leeuw
in album: Ustvolskaya: Compositions I, II & III
  type: MusicAlbum
  date published: 1995-01-01
genre: contemporary-classical
genre: russian-modern-classical
genre: russian-contemporary-classical
isrc code: NLA509407511
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:03:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea36ea8c7bb5a20d4ffca8dcc033fe724b04262996b0b1ef4f45c626924a0b2d
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/NLA509407511
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 0xea36ea8c7bb5a20d4ffca8dcc033fe724b04262996b0b1ef4f45c626924a0b2d. 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/NLA509407511.
  date published: 2026-07-08T03:20:19Z
audio: Composition II: Dies irae: VIII
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.542
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.302
  additional property: Energy
    type: PropertyValue
    value: 0.014
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.197
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.157
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ustvolskaya: Concerto for Piano, Strings & Timpani (Live)
type: MusicAlbum
date published: 2016-06-03

Galina Ustvolskaya: Piano Sonatas
type: MusicAlbum
date published: 1998

The Barton Workshop plays Galina Ustvolskaya
type: MusicAlbum
date published: 1993-01-01

Galina Ustvolskaya: Chamber Music
type: MusicAlbum
date published: 2021-02-09

Galina Ustvolskaya: 1
type: MusicAlbum
date published: 1992

Liszt Inspections
type: MusicAlbum
date published: 2015-06-01
track: 5 Ungarische Volkslieder, S. 245 (1873): No. 5, Erdó, erdó, sürü erdó Árnayában
  type: MusicRecording
  duration: PT1M38S
  duration ms: 98453
  explicit: false
  by artist: Franz Liszt
  by artist: Marino Formenti
  in album: Liszt Inspections
    type: MusicAlbum
    date published: 2015-06-01
  genre: classical
  genre: late-romantic-era
  isrc code: ATTE41501801
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T08:57:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6b04e1231310fdccb90111ccc7821c8ffae40b1a500359529c617a7e06c2d34d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960379
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960379
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATTE41501801
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T09:25:34Z
  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 0x6b04e1231310fdccb90111ccc7821c8ffae40b1a500359529c617a7e06c2d34d. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ATTE41501801.
    date published: 2026-07-31T09:25:34Z
  audio: 5 Ungarische Volkslieder, S. 245 (1873): No. 5, Erdó, erdó, sürü erdó Árnayában
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 142.421
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.322
    additional property: Energy
      type: PropertyValue
      value: 0.001
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.987
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.935
    additional property: Liveness
      type: PropertyValue
      value: 0.081
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.156
    additional property: Loudness (dB)
      type: PropertyValue
      value: -48.918
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Slowakische Erinnerungen aus der Kindheit (1956/1989): No. 20, Knabenschwermut
  type: MusicRecording
  duration: PT2M55S
  duration ms: 175546
  explicit: false
  by artist: Friedrich Cerha
  by artist: Marino Formenti
  in album: Liszt Inspections
    type: MusicAlbum
    date published: 2015-06-01
  isrc code: ATTE41501802
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T13:33:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xeab9bc2123b4f7a7c98f80e170afa5f8df5ceef5fe8a4442a6f625fa7408a284
  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/ATTE41501802
  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 0xeab9bc2123b4f7a7c98f80e170afa5f8df5ceef5fe8a4442a6f625fa7408a284. 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/ATTE41501802.
    date published: 2026-07-08T03:20:19Z
  audio: Slowakische Erinnerungen aus der Kindheit (1956/1989): No. 20, Knabenschwermut
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.152
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.29
    additional property: Energy
      type: PropertyValue
      value: 0.001
    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
      value: 0.941
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.832
    additional property: Liveness
      type: PropertyValue
      value: 0.088
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.079
    additional property: Loudness (dB)
      type: PropertyValue
      value: -48.178
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 6 Encores for Piano (1965): No. 3, Wasserklavier
  type: MusicRecording
  duration: PT2M19S
  duration ms: 139653
  explicit: false
  by artist: Luciano Berio
  by artist: Marino Formenti
  in album: Liszt Inspections
    type: MusicAlbum
    date published: 2015-06-01
  isrc code: ATTE41501815
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T07:50:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8f9416efb18dd2bc90dbdfa67a41667f515d3eff6dec23523e403ea65cb4b31b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953513
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 6 Encores for Piano (1965): No. 3, Wasserklavier
track: Játékok, Vol. 6: ...Waiting for Susan… (1992, revised 1993)
track: Bagatelle sans tonalité, S. 216a (1885)
track: Klang, Third Hour "Natürliche Dauern", Op. 83 (2005-06): No. 5

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/953513

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATTE41501815

OTSTimestamp
type: PropertyValue
value: 2026-06-13T12:47:07Z

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 0x8f9416efb18dd2bc90dbdfa67a41667f515d3eff6dec23523e403ea65cb4b31b. 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/ATTE41501815.
date published: 2026-06-13T12:47:07Z

6 Encores for Piano (1965): No. 3, Wasserklavier
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 75.399
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.255
additional property: Energy
  type: PropertyValue
  value: 0.002
additional property: Speechiness
  type: PropertyValue
  value: 0.058
additional property: Acousticness
  type: PropertyValue
  value: 0.961
additional property: Instrumentalness
  type: PropertyValue
  value: 0.355
additional property: Liveness
  type: PropertyValue
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
  type: PropertyValue
  value: -47.903
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

Játékok, Vol. 6: ...Waiting for Susan… (1992, revised 1993)
type: MusicRecording
duration: PT3M0S
duration ms: 180240
explicit: false
by artist: György Kurtág
by artist: Marino Formenti
in album: Liszt Inspections
  type: MusicAlbum
  date published: 2015-06-01
genre: classical
genre: classical-piano
genre: contemporary-classical
isrc code: ATTE41501804
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:28:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71a90b1c796198d5531ccdf5f8dafbe240628ddc072344adf5505f8b059591f0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATTE41501804
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
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 0x71a90b1c796198d5531ccdf5f8dafbe240628ddc072344adf5505f8b059591f0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ATTE41501804.
  date published: 2026-07-31T21:25:57Z
audio: Játékok, Vol. 6: ...Waiting for Susan… (1992, revised 1993)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.864
  additional property: Musical Key
    type: PropertyValue
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Bagatelle sans tonalité, S. 216a (1885)
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subject of: OpenTimestamps Proof of Existence
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Klang, Third Hour "Natürliche Dauern", Op. 83 (2005-06): No. 5
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subject of: OpenTimestamps Proof of Existence
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Postscriptum
type: MusicAlbum
date published: 2024-04-05

Piazzolla, Ustvolskaya, Schnittke: Works for Cello (Russia, 1996)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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track: Ustvolskaya: Grand Duet: Quaver = 276
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  by artist: Mstislav Rostropovich
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  subject of: OpenTimestamps Proof of Existence
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Arden, David - Contemporary Piano Music: Piano Music By Part, Gorecki And Ustvolskaya
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date published: 1995-05-23

Mravinsky Edition, Vol. 4
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date published: 2019-01-11

Introduction to Female Composers
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  subject of: OpenTimestamps Proof of Existence
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Webern, Silvestrov, Boulez:Variations
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date published: 1997-04-07

Women Composers
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  subject of: OpenTimestamps Proof of Existence
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ノクターン(夜想曲) 夜の調べ
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date published: 2019-07-30

Beethoven: Piano Concerto No. 2 - Ustvolskaya: Concerto for Piano, Strings & Timpani (Live)
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date published: 2016-07-01

Resistance: Conflict, Complexity, Conversations
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date published: 2023-12-01

Salzburg Biennale: Festival for New Music 2009
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  by artist: Mayumi Miyata
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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 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 0x7a34f89d37ef14eb23a73ae588b0ef87d782efc62ba92e5651ff81025ab4bd1d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEGF70914918.
    date published: 2026-07-31T02:51:48Z
  audio: Cloud and Light: VI. Welle und Licht
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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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Stravinsky: Petrushka; Prokofiev: Piano sonata No. 5 & Ustvolskaya: Piano sonata No. 2
type: MusicAlbum
date published: 1996-10-10

Reflections
type: MusicAlbum
date published: 2024-02-19

Dream Images
type: MusicAlbum
date published: 2016