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genre: classical
genre: classical piano
description: Artur Schnabel (17 April 1882 – 15 August 1951) was an Austrian-born classical pianist, composer and pedagogue. Schnabel was known for his intellectual seriousness as a musician, avoiding pure technic
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album: Souvenirs. Piano Music from the Golden Age
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album: Brahms: Piano Concertos Nos. 1 & 2 (Remastered 2023)
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album: Artur Schnabel in Performance with Joseph Szigeti & Pierre Fournier
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album: Artur Schnabel: Complete Vocal Works
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album: Schubert: 4 Impromptus, D.935
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album: Beethoven: Variations and Fugue in E-Flat Major, Op.35
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album: Schnabel Plays Schubert Piano Duets
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album: Schnabel Plays Schubert Piano Sonata No. 17, Piano Quintet “Trout”
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album: Schnabel Pays Schubert Piano Sonatas
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album: The Welte Mignon Mystery, Vol. 7
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album: Schnabel: Complete Works for Solo Piano
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album: Schubert: 6 Moments musicaux, D. 780 & Allegretto, D. 915
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album: Beethoven Piano Sonatas No. 10 - 12
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album: Schubert: Piano Works, Trout Quintet, Lieder
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album: Schnabel & Schubert
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album: Artur Schnabel's Complete Bach Recordings
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album: Schnabel Plays Schubert
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album: Beethoven: Piano Sonatas Nos 8 "Pathétique", 9, 10 & 11
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album: Beethoven: Complete Piano Sonatas (2016 Remaster)
album: Schanbel plays Schubert
album: Schnabel: Klavierquintett - Lieder - Klaviersonate
album: Schumann: Piano Quintet in Eb, Op. 44 - Dvorak: Piano Quintet in A, Op. 81
album: Artur Schnabel in Performance (1943, 1947)
album: Artur Schnabel Mozart, Schubert
album: Schnabel: String Quartet No. 1 - Notturno
album: Schubert Recordings (Complete) (Schnabel) (1932-1950)
album: Mozart, W.A.: Piano Concertos Nos. 13, 17, 19-24 and 27 / Piano Sonatas Nos. 8, 12 and 15 (Schnabel) (1934-1947)
album: Beethoven: Complete Piano Sonatas
album: The Piano Masters: Arthur Schnabel (1933-1939)
album: The Greatest Piano Works
track: Italienisches Konzert
track: Etudes, Op. 10: No. 5, Black Key Étude - Welte-Mignon 390

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date published: 2026-07-08T03:20:19Z

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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa38b743b9410d2b7a33de7b5780c128aea21670e677d074930cb2a6d2564a621
  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/GBAYC1601102
  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 0xa38b743b9410d2b7a33de7b5780c128aea21670e677d074930cb2a6d2564a621. 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/GBAYC1601102 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: I. Allegro
    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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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.475
    additional property: Energy
      type: PropertyValue
      value: 0.137
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.993
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.868
    additional property: Liveness
      type: PropertyValue
      value: 0.111
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.348
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.143
    additional property: Key Name
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      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: II. Adagio
  type: MusicRecording
  duration: PT6M4S
  duration ms: 364586
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Artur Schnabel
  in album: Beethoven: Complete Piano Sonatas (2016 Remaster)
    type: MusicAlbum
    date published: 2016-08-26
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC1601103
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T04:07:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9d168493b74f13c77810e12048d759b962cc290b88d12c9b382fd9ea10b447f8
  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/GBAYC1601103
  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 0x9d168493b74f13c77810e12048d759b962cc290b88d12c9b382fd9ea10b447f8. 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/GBAYC1601103 — a six-check JSON result.
    date published: 2026-07-31T04:14:58Z
  audio: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: II. Adagio
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 148.08
    additional property: Musical Key
      type: PropertyValue
      value: 5
    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: 0.449
    additional property: Energy
      type: PropertyValue
      value: 0.026
    additional property: Speechiness
      type: PropertyValue
      value: 0.049
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.918
    additional property: Liveness
      type: PropertyValue
      value: 0.101
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.219
    additional property: Loudness (dB)
      type: PropertyValue
      value: -31.761
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto - Trio
  type: MusicRecording
  duration: PT3M28S
  duration ms: 208840
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Artur Schnabel
  in album: Beethoven: Complete Piano Sonatas (2016 Remaster)
    type: MusicAlbum
    date published: 2016-08-26
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC1601104
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T14:55:14+00:00
  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: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto - Trio
track: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
track: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
track: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
track: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xb026e4a65442c32b05c2cc15e08da76adeb05a86789e5e14684b4598662b96db

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960418

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960418

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601104

OTSTimestamp
type: PropertyValue
value: 2026-07-31T15:20:15Z

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 0xb026e4a65442c32b05c2cc15e08da76adeb05a86789e5e14684b4598662b96db. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601104 — a six-check JSON result.
date published: 2026-07-31T15:20:15Z

Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto - Trio
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 108.301
additional property: Musical Key
  type: PropertyValue
  value: 5
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.434
additional property: Energy
  type: PropertyValue
  value: 0.041
additional property: Speechiness
  type: PropertyValue
  value: 0.031
additional property: Acousticness
  type: PropertyValue
  value: 0.994
additional property: Instrumentalness
  type: PropertyValue
  value: 0.848
additional property: Liveness
  type: PropertyValue
  value: 0.123
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.304
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.462
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Minor

Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
type: MusicRecording
duration: PT4M47S
duration ms: 287120
explicit: false
by artist: Ludwig van Beethoven
by artist: Artur Schnabel
in album: Beethoven: Complete Piano Sonatas (2016 Remaster)
  type: MusicAlbum
  date published: 2016-08-26
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC1601105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T23:29:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x465be495070b98fc981fff89ccff158757d02cde8a4c1941a7842f97d7de5637
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960481
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960481
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601105
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:51:35Z
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 0x465be495070b98fc981fff89ccff158757d02cde8a4c1941a7842f97d7de5637. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601105 — a six-check JSON result.
  date published: 2026-07-31T23:51:35Z
audio: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.331
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.534
  additional property: Energy
    type: PropertyValue
    value: 0.122
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.867
  additional property: Liveness
    type: PropertyValue
    value: 0.164
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.21
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.464
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
type: MusicRecording
duration: PT10M8S
duration ms: 608386
explicit: false
by artist: Ludwig van Beethoven
by artist: Artur Schnabel
in album: Beethoven: Complete Piano Sonatas (2016 Remaster)
  type: MusicAlbum
  date published: 2016-08-26
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC1601106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:24:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0dbb96e504ebd8e6b4d302e0df33b19df353786a339a0c8ee1dbf31c29357fb7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 0x0dbb96e504ebd8e6b4d302e0df33b19df353786a339a0c8ee1dbf31c29357fb7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601106 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.088
  additional property: Musical Key
    type: PropertyValue
    value: 7
  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: 0.43
  additional property: Energy
    type: PropertyValue
    value: 0.098
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.8
  additional property: Liveness
    type: PropertyValue
    value: 0.154
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.34
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.105
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
type: MusicRecording
duration: PT8M39S
duration ms: 519866
explicit: false
by artist: Ludwig van Beethoven
by artist: Artur Schnabel
in album: Beethoven: Complete Piano Sonatas (2016 Remaster)
  type: MusicAlbum
  date published: 2016-08-26
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC1601128
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T18:40:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3fcc83c12c3484a27c40a48ded9f92dacc242f3f71d0f466c4ead71f0e8222d4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601128
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13Z
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 0x3fcc83c12c3484a27c40a48ded9f92dacc242f3f71d0f466c4ead71f0e8222d4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBAYC1601128 — a six-check JSON result.
  date published: 2026-07-31T19:53:13Z
audio: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.803
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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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: 0.823
  additional property: Liveness
    type: PropertyValue
    value: 0.155
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.137
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.744
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
type: MusicRecording
duration: PT5M57S
duration ms: 357933
explicit: false
by artist: Ludwig van Beethoven
by artist: Artur Schnabel
in album: Beethoven: Complete Piano Sonatas (2016 Remaster)
  type: MusicAlbum
  date published: 2016-08-26
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC1601129
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:21:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7aba93cd53dc3b7e837d8ebbbba22e53c864bfa974daad573fac9293e2d7fa66
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/GBAYC1601129
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T18:48:12Z
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Schanbel plays Schubert
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Schnabel: Klavierquintett - Lieder - Klaviersonate
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Schumann: Piano Quintet in Eb, Op. 44 - Dvorak: Piano Quintet in A, Op. 81
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Artur Schnabel in Performance (1943, 1947)
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Artur Schnabel Mozart, Schubert
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Schnabel: String Quartet No. 1 - Notturno
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Schubert Recordings (Complete) (Schnabel) (1932-1950)
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Mozart, W.A.: Piano Concertos Nos. 13, 17, 19-24 and 27 / Piano Sonatas Nos. 8, 12 and 15 (Schnabel) (1934-1947)
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Beethoven: Complete Piano Sonatas
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The Piano Masters: Arthur Schnabel (1933-1939)
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The Greatest Piano Works
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Italienisches Konzert
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T22:48:59Z
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Etudes, Op. 10: No. 5, Black Key Étude - Welte-Mignon 390
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
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