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genre: classical piano
description: Jorge Bolet (November 15, 1914October 16, 1990) was a Cuban-born American concert pianist, conductor and teacher. Among his teachers were Leopold Godowsky, and Moriz Rosenthal – the latter a renowned
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album: Liszt: Piano Concertos Nos. 1 & 2, Tre Sonetti del Petrarca & Tannhäuser Overture (Jorge Bolet: The RIAS recordings, Vol. II)
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  date published: 2018-01-19
album: Jorge Bolet playing the Music of Franz Liszt (Transferred from the Original Everest Records Master Tapes)
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album: Jorge Bolet Plays the Music of Franz Liszt
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album: The Music of Franz Liszt
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album: Liszt: Sonata S. 178 & Piano Concerto No. 1
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  date published: 2013-05-05
album: Chopin: 7 Nocturnes; Berceuse Op. 57
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  date published: 2024-11-15
album: Jorge Bolet: The Berlin Radio Recordings, Vol. III (Beethoven, Chopin, Debussy, Schumann, Franck, Grieg, Godowsky, Liszt & Dello Joio)
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  date published: 2019-01-11
album: Jorge Bolet: The RIAS Recordings, Vol. I
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album: Jorge Bolet: A Chopin Piano Recital (Transferred from the Original Everest Records Master Tapes)
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album: Jorge Bolet Plays Liszt: Trascendental Etudes & Sonata in B Minor
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album: Piano Recital 1988
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album: Liszt: Paraphrases
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album: Liszt: Etudes d'execution transcendante
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album: Jorge Bolet Plays Chopin
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  date published: 2013-03-22
album: Liszt: Liebestraum & Other Piano Works; Hungarian Rhapsody No. 12; La Campanella
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album: Song Without End (Original Film Soundtrack)
album: His Earliest Recordings (Recorded 1952-1953)
album: Franz Liszt: Liebestraum - Virtuose Klaviermusik
album: Jorge Bolet - The Romantic Virtuoso
album: Liszt: Piano Concertos Nos. 1 & 2; Sonata in B Minor & Memphisto Waltz
album: Prokofiev: Russische Meisterwerke, Vol. 2
album: Giovanni Sgambati & Josef Rheinberger: Piano Concertos
album: Jorge Bolet Rediscovered Liszt Recital
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album: Jorge Bolet Live
album: Schubert: Piano Sonatas Nos. 14 & 20
album: Chopin: Piano Concertos Nos.1 & 2
album: Jorge Bolet plays Liszt
album: Franck: Prelude, Choral & Fugue; Prelude, Aria & Finale
album: Debussy: Sixteen Preludes
album: Chopin: 24 Preludes; Nocturnes
album: Chopin: Ballades; Barcarolle; Fantaisie
album: Rachmaninov: Solo Piano Works
album: Franck: Symphony in D Minor; Symphonic Variations
album: Encores
album: Schumann: Carnaval/Fantasie
album: Rachmaninov: Piano Concerto No.2/Tchaikovsky: Piano Concerto No.1
album: Liszt: Concert Studies (Piano Works Vol. 9)
track: Etudes de concert: Un sospiro, S. 144/3

Liebestraum, S. 541, No. 3
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Consolations, S. 172: No. 3 in D-Flat Major. Lento, placido
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    date published: 2026-07-08T03:53:27Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Liebesträume, S. 541: No. 3, O lieb, so lang du lieben kannst!

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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88fe3c9d9c31504686050144ad81598412cf37e40a5ea862949901c6f8c9009. 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/GBF078200693.
date published: 2026-07-08T03:22:41Z

Liebesträume, S. 541: No. 3, O lieb, so lang du lieben kannst!
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Liszt: Piano Works
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date published: 2001
track: Liebestraum, S. 541, No. 3
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
  audio: Etudes de concert: Un sospiro, S. 144/3
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Liszt: Liebestraum - Favourite Piano Works
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
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track: Die Forelle, S. 564 (After Schubert, D. 550)

OTSHash
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

Années de pèlerinage II, Italie, S. 161: V. Sonetto 104 del Petrarca
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078140101
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b86327bcba317cb4803adcf0829cd3cec62d661eaa02b0662401abbf9d4670. 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/GBF078140101.
  date published: 2026-07-08T03:20:19Z
audio: Die Forelle, S. 564 (After Schubert, D. 550)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.216
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.906
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.117
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.512
  additional property: Key Name
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  additional property: Mode Name
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Jorge Bolet Live
type: MusicAlbum
date published: 1993-01-01

Schubert: Piano Sonatas Nos. 14 & 20
type: MusicAlbum
date published: 1990-10-01

Chopin: Piano Concertos Nos.1 & 2
type: MusicAlbum
date published: 1990-01-01

Jorge Bolet plays Liszt
type: MusicAlbum
date published: 1989-10-23

Franck: Prelude, Choral & Fugue; Prelude, Aria & Finale
type: MusicAlbum
date published: 1989-04-13
track: Prelude, Choral & Fugue, CFF 24: I. Prélude. Moderato
  type: MusicRecording
  duration: PT5M5S
  duration ms: 305266
  explicit: false
  by artist: César Franck
  by artist: Jorge Bolet
  in album: Franck: Prelude, Choral & Fugue; Prelude, Aria & Finale
    type: MusicAlbum
    date published: 1989-04-13
  genre: chamber-music
  isrc code: GBF078810471
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd51f89d8e117f1d3ddd20175598d3b977f210a7ddc217977ad99cfa78a9b542e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957075
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957075
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078810471
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T18:50:38Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f89d8e117f1d3ddd20175598d3b977f210a7ddc217977ad99cfa78a9b542e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBF078810471.
    date published: 2026-07-07T18:50:38Z
  audio: Prelude, Choral & Fugue, CFF 24: I. Prélude. Moderato
    type: AudioObject
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    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
      value: 0.018
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.912
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.082
    additional property: Loudness (dB)
      type: PropertyValue
      value: -30.327
    additional property: Key Name
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      value: F#
    additional property: Mode Name
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track: Prelude, Aria & Finale, CFF 26: II. Aria. Lento
  type: MusicRecording
  duration: PT6M34S
  duration ms: 394693
  explicit: false
  by artist: César Franck
  by artist: Jorge Bolet
  in album: Franck: Prelude, Choral & Fugue; Prelude, Aria & Finale
    type: MusicAlbum
    date published: 1989-04-13
  genre: chamber-music
  isrc code: GBF078810482
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb04c7332996d334be87aaa4c5c0534a79a5b40197091d48db7c4230fa3dc8ba8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078810482
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04c7332996d334be87aaa4c5c0534a79a5b40197091d48db7c4230fa3dc8ba8. 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/GBF078810482.
    date published: 2026-07-08T03:22:41Z
  audio: Prelude, Aria & Finale, CFF 26: II. Aria. Lento
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
      value: 0.277
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.91
    additional property: Liveness
      type: PropertyValue
      value: 0.108
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.097
    additional property: Loudness (dB)
      type: PropertyValue
      value: -34.878
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
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      value: Major
track: Variations symphoniques, CFF 137
  type: MusicRecording
  duration: PT17M5S
  duration ms: 1025853
  explicit: false
  by artist: César Franck
  by artist: Jorge Bolet
  by artist: Royal Concertgebouw Orchestra
  by artist: Riccardo Chailly
  in album: Franck: Prelude, Choral & Fugue; Prelude, Aria & Finale
    type: MusicAlbum
    date published: 1989-04-13
  genre: chamber-music
  isrc code: GBF078610361
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T11:20:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x27897f8be7d2e64cbdbc390b6cecbad481bda900298332bf35c5039ec42f4fdd
  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: Variations symphoniques, CFF 137

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/GBF078610361

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27897f8be7d2e64cbdbc390b6cecbad481bda900298332bf35c5039ec42f4fdd. 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/GBF078610361.
date published: 2026-07-08T03:20:19Z

Variations symphoniques, CFF 137
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 101.615
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.254
additional property: Energy
  type: PropertyValue
  value: 0.059
additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.981
additional property: Instrumentalness
  type: PropertyValue
  value: 0.947
additional property: Liveness
  type: PropertyValue
  value: 0.094
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.04
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.918
additional property: Key Name
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additional property: Mode Name
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Debussy: Sixteen Preludes
type: MusicAlbum
date published: 1989-01-01

Chopin: 24 Preludes; Nocturnes
type: MusicAlbum
date published: 1988-09-01

Chopin: Ballades; Barcarolle; Fantaisie
type: MusicAlbum
date published: 1988-05-01
track: Ballade No. 1 in G minor, Op. 23
  type: MusicRecording
  duration: PT10M3S
  duration ms: 603093
  explicit: false
  by artist: Frédéric Chopin
  by artist: Jorge Bolet
  in album: Chopin: Ballades; Barcarolle; Fantaisie
    type: MusicAlbum
    date published: 1988-05-01
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: GBF078611170
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T15:08:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x475206691e783b04d59b0ec9c364012586d7071db5b06b3ddf613d11487d23c9
  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/GBF078611170
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475206691e783b04d59b0ec9c364012586d7071db5b06b3ddf613d11487d23c9. 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/GBF078611170.
    date published: 2026-07-08T03:22:41Z
  audio: Ballade No. 1 in G minor, Op. 23
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.305
    additional property: Energy
      type: PropertyValue
      value: 0.059
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.982
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.87
    additional property: Liveness
      type: PropertyValue
      value: 0.066
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.052
    additional property: Loudness (dB)
      type: PropertyValue
      value: -27.778
    additional property: Key Name
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    additional property: Mode Name
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Rachmaninov: Solo Piano Works
type: MusicAlbum
date published: 1988-01-01
track: Prélude in C sharp minor, Op. 3, No. 2
  type: MusicRecording
  duration: PT4M6S
  duration ms: 246173
  explicit: false
  by artist: Sergei Rachmaninoff
  by artist: Jorge Bolet
  in album: Rachmaninov: Solo Piano Works
    type: MusicAlbum
    date published: 1988-01-01
  genre: classical
  genre: classical-piano
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    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/GBF078710300
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce5cc861abd4f845a497b366c86e89c4b386c9f1a5ad0c9f19cc3614d87853. 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/GBF078710300.
    date published: 2026-07-08T03:20:19Z
  audio: Prélude in C sharp minor, Op. 3, No. 2
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.493
    additional property: Energy
      type: PropertyValue
      value: 0.082
    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.891
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.106
    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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Franck: Symphony in D Minor; Symphonic Variations
type: MusicAlbum
date published: 1987-06-01
track: Variations symphoniques, CFF 137
  type: MusicRecording
  duration: PT17M8S
  duration ms: 1028653
  explicit: false
  by artist: César Franck
  by artist: Jorge Bolet
  by artist: Royal Concertgebouw Orchestra
  by artist: Riccardo Chailly
  in album: Franck: Symphony in D Minor; Symphonic Variations
    type: MusicAlbum
    date published: 1987-06-01
  genre: chamber-music
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078610361
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27897f8be7d2e64cbdbc390b6cecbad481bda900298332bf35c5039ec42f4fdd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078610361.
    date published: 2026-07-08T03:53:27Z
  audio: Variations symphoniques, CFF 137
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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Encores
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Schumann: Carnaval/Fantasie
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    date published: 2026-07-08T03:20:19Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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  subject of: OpenTimestamps Proof of Existence
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track: 6 Consolations, S. 172: No. 4 in D-Flat Major. Quasi adagio
track: 6 Consolations, S. 172: No. 5 in E Major. Andantino

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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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subject of: OpenTimestamps Proof of Existence
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Etudes de concert: Un sospiro, S. 144/3
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  date published: 2026-07-08T08:56:20Z
audio: Etudes de concert: Un sospiro, S. 144/3
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