Kateřina Englichová
type: MusicGroup
genre: chamber music
popularity: 6
followers: 237
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subject of: OpenTimestamps Proof of Existence
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album: Britten & Pärt
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  date published: 2011-11-30
album: Rosetti: Harp Sonatas
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  date published: 2000-09-13
album: F. & C. Doppler: The Complete Flute Music, Vol. 5
  type: MusicAlbum
  date published: 2017-11-03
album: Sylvie Bodorová: JA RA LAJ
  type: MusicAlbum
  date published: 2012-09-01
album: Musica per arpa
  type: MusicAlbum
  date published: 2015-10-16
album: Classical Music for Increased Focus
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  date published: 2015-08-17
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    by artist: Beecham Choral Society
    by artist: René Leibowitz
    by artist: Royal Philharmonic Orchestra
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      date published: 2015-08-17
    genre: classical
    genre: classical-piano
    genre: chamber-music
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    additional property: OTSVerifyInstructions
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      date published: 2026-07-30T09:57:33Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T02:19:15Z
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album: Francaix, Bordes, d'Indy, Pierne & Jolivet
album: Feld / Lukas: Concertos
album: V Rytmu Mistru (The Rhythm of the Masters)
album: Christmas Album
album: Impressions: Ravel, Debussy, Sluka
album: Hanuš, Eben and Haas: Risonanza
album: As Time Goes By
album: Novák: Hovory o jednohlasu
album: Nocturne
album: Britten - A Ceremony of Carols
album: Mozart: Sonatas for flute and harp
album: Fire Dance
album: Chanson dans la nuit
album: Mirror Reflections
album: Granados: Danzas Espanolas
album: Albert Roussel: Chamber Music
album: Harp Recital - Ravel, Debussy, Jolivet, Tournier
album: Benjamin Britten: A Birthday Hansel, Canticle V.- The Death of Saint Narcissus, Folk Songs Arrangements
album: Taste of Honey
album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
album: Homework Hits Vol. 1: The Classical Study Hall
album: Guitar Concerto Collection
album: Britten
album: Všechno se jednou změní
album: Florent Schmitt: Lied et Scherzo, Suite en rocaille, A tour d'anches, Chants alizés
album: Dialogues
album: Classical Sensibilities: The Jane Austen Companion (Music from 1775-1817)
album: Homework Classics
album: Ned Rorem: Concerto for Left Hand and Orchestra
album: Slovak Songs
album: Slzy a usmevy
album: Rhapsody
album: Christmas In Prague

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Francaix, Bordes, d'Indy, Pierne & Jolivet
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date published: 2012-09-01

Feld / Lukas: Concertos
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date published: 2012-09-01

V Rytmu Mistru (The Rhythm of the Masters)
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Christmas Album
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date published: 2022-11-11

Impressions: Ravel, Debussy, Sluka
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date published: 2017-04-21
track: Rêverie, L. 68 - Arr. for Oboe and Harp
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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Hanuš, Eben and Haas: Risonanza
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As Time Goes By
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date published: 2024-02-08

Novák: Hovory o jednohlasu
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Nocturne
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Britten - A Ceremony of Carols
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Mozart: Sonatas for flute and harp
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Fire Dance
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date published: 2012-09-01

Chanson dans la nuit
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date published: 2012-02-24
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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
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    date published: 2026-07-30T21:35:24Z
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Mirror Reflections
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date published: 2011-09-01
track: Spiegel im Spiegel (arr. for cello and harp)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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      value: 120.311
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.468
    additional property: Energy
      type: PropertyValue
      value: 0.04
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.951
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.883
    additional property: Liveness
      type: PropertyValue
      value: 0.064
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.073
    additional property: Loudness (dB)
      type: PropertyValue
      value: -29.686
    additional property: Key Name
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      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

Granados: Danzas Espanolas
type: MusicAlbum
date published: 2002-03-18

Albert Roussel: Chamber Music
type: MusicAlbum
date published: 1995-09-01

Harp Recital - Ravel, Debussy, Jolivet, Tournier
type: MusicAlbum
date published: 1995-01-01

Benjamin Britten: A Birthday Hansel, Canticle V.- The Death of Saint Narcissus, Folk Songs Arrangements
type: MusicAlbum
date published: 1992-01-01

Taste of Honey
type: MusicAlbum
date published: 2024-05-17

LÁSKA TVÁ (pocta Dušanu Vančurovi)
type: MusicAlbum
date published: 2022-12-22
track: Jablůňka
  type: MusicRecording
  duration: PT2M45S
  duration ms: 165217
  explicit: false
  by artist: Antikvartet
  by artist: Jan Linhart
  by artist: Petr Lüftner
  in album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
    type: MusicAlbum
    date published: 2022-12-22
  isrc code: CZCO72200106
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T04:08:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4b04d5fbf78f8c207d31410c968290f7306a3ae09aaeee0e998d088ca7ccc982
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960344
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960344
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200106
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T04:14:58Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b04d5fbf78f8c207d31410c968290f7306a3ae09aaeee0e998d088ca7ccc982. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200106 — a six-check JSON result.
    date published: 2026-07-31T04:14:58Z
  audio: Jablůňka
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 174.428
    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: 0.337
    additional property: Energy
      type: PropertyValue
      value: 0.485
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.423
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.165
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.48
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.261
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Dudy z Edinburku
  type: MusicRecording
  duration: PT2M23S
  duration ms: 143189
  explicit: false
  by artist: Antikvartet
  by artist: Jan Linhart
  by artist: Petr Lüftner
  by artist: Lenka Slaba
  in album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
    type: MusicAlbum
    date published: 2022-12-22
  isrc code: CZCO72200108
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:40:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0d9c8f61f6ce09ecb87d7a81c51fe0bf266e74bf91bbd70b5a6db54d8cd492a9
  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/CZCO72200108
  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 0x0d9c8f61f6ce09ecb87d7a81c51fe0bf266e74bf91bbd70b5a6db54d8cd492a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200108 — a six-check JSON result.
    date published: 2026-07-08T03:22:41Z
  audio: Dudy z Edinburku
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 164.515
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.531
    additional property: Energy
      type: PropertyValue
      value: 0.889
    additional property: Speechiness
      type: PropertyValue
      value: 0.095
    additional property: Acousticness
      type: PropertyValue
      value: 0.233
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.2
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.961
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.791
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Batalion
  type: MusicRecording
  duration: PT2M45S
  duration ms: 165632
  explicit: false
  by artist: Antikvartet
  by artist: Jan Linhart
  in album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
    type: MusicAlbum
    date published: 2022-12-22
  isrc code: CZCO72200103
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T15:03:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc43163079b488df9ae432378b8e8b6e24e71d387880166572effabed20de0376
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Batalion
track: Stará archa (Kocábka)
track: Soudný den
track: Z Betléma se ozývá

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/CZCO72200103

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 0xc43163079b488df9ae432378b8e8b6e24e71d387880166572effabed20de0376. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200103 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Batalion
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 136.996
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: 0.612
additional property: Energy
  type: PropertyValue
  value: 0.371
additional property: Speechiness
  type: PropertyValue
  value: 0.027
additional property: Acousticness
  type: PropertyValue
  value: 0.777
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.118
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.264
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.291
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

Stará archa (Kocábka)
type: MusicRecording
duration: PT3M8S
duration ms: 188139
explicit: false
by artist: Antikvartet
by artist: Jan Linhart
by artist: Komorní sbor
by artist: Vojtěch Nedvěd
by artist: Ondra Škoch
by artist: Ivo Jahelka
by artist: Lukáš Holec
in album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
  type: MusicAlbum
  date published: 2022-12-22
isrc code: CZCO72200115
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:18:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07bcbb97287a23e78aea5d09ecbb41b4711bdf5cb2babb5ba04a611b587a1c21
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200115
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 0x07bcbb97287a23e78aea5d09ecbb41b4711bdf5cb2babb5ba04a611b587a1c21. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200115 — a six-check JSON result.
  date published: 2026-07-31T12:24:41Z
audio: Stará archa (Kocábka)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.863
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.424
  additional property: Energy
    type: PropertyValue
    value: 0.566
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.746
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.123
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.646
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.834
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Soudný den
type: MusicRecording
duration: PT2M51S
duration ms: 171477
explicit: false
by artist: Antikvartet
by artist: Jan Linhart
in album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
  type: MusicAlbum
  date published: 2022-12-22
isrc code: CZCO72200120
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:38:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbcf1f50fe49e272a3be969510b9b6ad7552845f7efef3fafc72dd17d937cdaa8
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/CZCO72200120
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 0xbcf1f50fe49e272a3be969510b9b6ad7552845f7efef3fafc72dd17d937cdaa8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200120 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Soudný den
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.641
  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: 0.544
  additional property: Energy
    type: PropertyValue
    value: 0.641
  additional property: Speechiness
    type: PropertyValue
    value: 0.026
  additional property: Acousticness
    type: PropertyValue
    value: 0.69
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.188
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.578
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.693
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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Z Betléma se ozývá
type: MusicRecording
duration: PT2M59S
duration ms: 179165
explicit: false
by artist: Antikvartet
by artist: Jan Linhart
by artist: Terumi Suda Hatashima
by artist: Petr Vančura
by artist: Komorní sbor
in album: LÁSKA TVÁ (pocta Dušanu Vančurovi)
  type: MusicAlbum
  date published: 2022-12-22
isrc code: CZCO72200104
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:01:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1de324d9dbd4b7dcaac74c50e40e893b23f252a02269f407f93c6057cea3bfe9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200104
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de324d9dbd4b7dcaac74c50e40e893b23f252a02269f407f93c6057cea3bfe9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZCO72200104 — a six-check JSON result.
  date published: 2026-07-08T03:39:04Z
audio: Z Betléma se ozývá
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.571
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.046
  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.355
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  additional property: Mode Name
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Homework Hits Vol. 1: The Classical Study Hall
type: MusicAlbum
date published: 2007-02-06
track: Air On The G String (from Suite No. 3 in D)
  type: MusicRecording
  duration: PT4M3S
  duration ms: 243066
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Charles Gerhardt & National Philharmonic Baroque Ensemble
  in album: Homework Hits Vol. 1: The Classical Study Hall
    type: MusicAlbum
    date published: 2007-02-06
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: USRDG0111843
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:12:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x78d59e70f81035dd7e4cfdb420de55285537b2a97095475ddb12be58d8a01236
  additional property: OTSHash
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Guitar Concerto Collection
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Britten
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Všechno se jednou změní
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Florent Schmitt: Lied et Scherzo, Suite en rocaille, A tour d'anches, Chants alizés
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Dialogues
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Classical Sensibilities: The Jane Austen Companion (Music from 1775-1817)
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Homework Classics
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Ned Rorem: Concerto for Left Hand and Orchestra
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Slovak Songs
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Slzy a usmevy
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Rhapsody
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Christmas In Prague
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