Jan Ladislav Dussek
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genre: classical
genre: classical piano
description: Jan Ladislav Dussek (baptised Jan Václav Dusík,Černušák, p. 271 with surname also written as Duschek or Düssek; 12 February 1760 – 20 March 1812) was a Czech classical period composer and virtuoso pia
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album: Dussek: Messe solomnelle in G Major, C. 256
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album: Dussek: Piano Concertos Op. 3, 14 & 49 (Hyperion Classical Piano Concerto 5)
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album: Dussek: Piano Concertos Op. 1/3, 29 & 70 (Hyperion Classical Piano Concerto 1)
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album: Dussek: Sonatas, Op. 35 & Op.69 No.3, Vol. 10
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  date published: 2024-03-27
album: Dussek: Violin Sonatas, Vol. 3
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  date published: 2023-11-27
album: Dussek: 3 Piano Sonatas, Op. 9
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  date published: 2023-10-28
album: Sonatas
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  date published: 2023-02-24
album: Dussek: Violin Sonatas, Vol. 2
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album: Dussek: 6 Sonates faciles, Op. 46
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album: Dussek: Violin Sonatas, Vol. 1
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album: Dussek: 6 Piano Sonatinas, Op. 19/20
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album: Dussek: Six Sonatinas Opus 20
album: Dussek: Complete Original Works for Piano Four-Hands
album: Dussek: Complete Piano Sonatas, Op. 14 Nos. 1-3, Vol. 9
album: Dussek: Complete Piano Sonatas Vol. 8 Sonatinas
album: Dussek: Piano Works
album: Dussek: Piano Sonatas, No. 26 in A-Flat Major & No. 28 in F Minor
album: Dussek: Complete Piano Sonatas, Op. 47 & Op. 64, Vol. 7
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album: Dussek: Complete Piano Sonatas, Op. 18 No. 2 & Op. 45
album: Dussek: Concerto for Two Pianos & Chamber Works
album: Dussek: Sonatas, Op. 5 No.3, Op. 24, Op. 43 & Op.61, Vol. 4
album: Dussek: Complete Piano Sonatas, Op. 44 & Op. 77
album: Dussek: Sonatas, Op. 39 & Op.25 No.2
album: Dussek: Complete Piano Sonatas, Op. 10 & Op.31 No.2
album: Dussek: Sonatas, Op. 35 Nos. 1-3, Leçons
album: J.L. Dussek: Piano Music
album: Dussek: The Complete Piano Sonatas, Vol. 2
album: Dussek, J.L.: Works for Piano 4 Hands
album: Dussek: The Complete Piano Sonatas, Vol. 1
album: Dussek: Piano Concerto in F Major, Piano Concerto in B-Flat Major & Piano Sonata in A-Flat Major
album: Dussek, J.L.: Duo Concertants, Op. 69, Nos. 1 and 3 / Sonata, Op. 61, "Elegie Harmonique"
album: J. L. Dussek: Piano Variations, Pieces, Fantasia
album: Dussek: Grand Sonata
album: Piano Works of Jan Ladislav Dussek, Vol. 1
album: Jan Ladislav Dussek: Streichquartette op. 60
album: Dussek, J.L.: Piano Sonatas - Opp. 9 and 77
album: Dussek: 3 Piano Sonatas
album: Dussek: The Piano Sonatas
album: J.L. Dussek: Sonatas
album: Jan Ladislav Dussek: Duos for Harp and Pianoforte

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value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230ec2051416db7656f36e2c3a7b6e3c54c6a97b6d378aa1c548d24a5518880a. 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/USL4R2174142.
date published: 2026-07-08T03:22:41Z

Sonatina in C Major, Op. 20, No. 2: I. Allegreto quasi andante
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 144.806
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.487
additional property: Energy
  type: PropertyValue
  value: 0.068
additional property: Speechiness
  type: PropertyValue
  value: 0.049
additional property: Acousticness
  type: PropertyValue
  value: 0.984
additional property: Instrumentalness
  type: PropertyValue
  value: 0.855
additional property: Liveness
  type: PropertyValue
  value: 0.121
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.494
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.064
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Sonatina in C Major, Op. 20, No. 2: II. Rondo. Presto
type: MusicRecording
duration: PT2M47S
duration ms: 167567
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174143
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:01:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c27fb2e46d2748c40255a3d0548097062b0023636fe9bb80ea5d416086c7ce9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957122
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/USL4R2174143
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:39:04Z
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 0x4c27fb2e46d2748c40255a3d0548097062b0023636fe9bb80ea5d416086c7ce9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2174143.
  date published: 2026-07-08T03:39:04Z
audio: Sonatina in C Major, Op. 20, No. 2: II. Rondo. Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.429
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.328
  additional property: Energy
    type: PropertyValue
    value: 0.2
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.897
  additional property: Liveness
    type: PropertyValue
    value: 0.201
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.647
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.068
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonatina in F Major, Op. 20, No. 3: I. Allegro quasi presto
type: MusicRecording
duration: PT1M59S
duration ms: 119017
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174144
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T12:30:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd9b9402f8b73f5051602af546853276d22c8602b5b9b596db01db8725c62ecbf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960403
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960403
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2174144
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:04:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b9402f8b73f5051602af546853276d22c8602b5b9b596db01db8725c62ecbf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2174144.
  date published: 2026-07-31T13:04:34Z
audio: Sonatina in F Major, Op. 20, No. 3: I. Allegro quasi presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.257
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.266
  additional property: Energy
    type: PropertyValue
    value: 0.22
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.887
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.655
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.957
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonatina in F Major, Op. 20, No. 3: II. Rondo. Andantino
type: MusicRecording
duration: PT4M1S
duration ms: 241744
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174145
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:17:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcde080ea92f9fbdef54b100009a668867c7fb89a0f5fb1bb091f2549f83b5d70
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
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/USL4R2174145
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 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 0xcde080ea92f9fbdef54b100009a668867c7fb89a0f5fb1bb091f2549f83b5d70. 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/USL4R2174145.
  date published: 2026-07-08T03:53:27Z
audio: Sonatina in F Major, Op. 20, No. 3: II. Rondo. Andantino
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.056
  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: 0.375
  additional property: Energy
    type: PropertyValue
    value: 0.074
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.911
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.565
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.731
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonatina in A Major, Op. 20, No. 4: I. Moderato
type: MusicRecording
duration: PT4M16S
duration ms: 256605
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174146
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T21:32:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d35254bb6f690eaafa45d1867e891543cf7ca79d4dd096935804e2cda2129e8
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/USL4R2174146
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 0x1d35254bb6f690eaafa45d1867e891543cf7ca79d4dd096935804e2cda2129e8. 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/USL4R2174146.
  date published: 2026-07-08T03:22:41Z
audio: Sonatina in A Major, Op. 20, No. 4: I. Moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.543
  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: 0.383
  additional property: Energy
    type: PropertyValue
    value: 0.093
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.685
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.169
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonatina in C Major, Op. 20, No. 5: I. Allegro moderato
type: MusicRecording
duration: PT3M48S
duration ms: 228369
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174148
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T19:51:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0f4adbf1fea388edd935127400fd18cb3d488ade667fbcd85270e3135656be1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960459
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2174148
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
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 0xd0f4adbf1fea388edd935127400fd18cb3d488ade667fbcd85270e3135656be1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USL4R2174148.
  date published: 2026-07-31T20:22:46Z
audio: Sonatina in C Major, Op. 20, No. 5: I. Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.119
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.374
  additional property: Energy
    type: PropertyValue
    value: 0.114
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.896
  additional property: Liveness
    type: PropertyValue
    value: 0.152
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.504
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.066
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonatina in C Major, Op. 20, No. 5: II. Rondo. Allegro moderato
type: MusicRecording
duration: PT1M42S
duration ms: 102230
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174149
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T00:42:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe339afa6405224aeaedfc38c88fa28be44a5f8ca5a66d51b8bd13b5ebcb06659
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960494
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960494
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2174149
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T01:44:32Z
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 0xe339afa6405224aeaedfc38c88fa28be44a5f8ca5a66d51b8bd13b5ebcb06659. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USL4R2174149.
  date published: 2026-08-01T01:44:32Z
audio: Sonatina in C Major, Op. 20, No. 5: II. Rondo. Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.315
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.401
  additional property: Energy
    type: PropertyValue
    value: 0.217
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.927
  additional property: Liveness
    type: PropertyValue
    value: 0.128
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.643
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.962
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonatina in E-Flat Major, Op. 20, No. 6: I. Allegro
type: MusicRecording
duration: PT4M16S
duration ms: 256605
explicit: false
by artist: Jan Ladislav Dussek
by artist: Eric Stanley
in album: Dussek: Six Sonatinas Opus 20
  type: MusicAlbum
  date published: 2021-12-10
genre: classical
genre: classical-piano
isrc code: USL4R2174150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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Dussek: Complete Piano Sonatas, Op. 14 Nos. 1-3, Vol. 9
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Dussek: Complete Piano Sonatas Vol. 8 Sonatinas
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Dussek: Piano Works
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Dussek: Piano Sonatas, No. 26 in A-Flat Major & No. 28 in F Minor
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Dussek: Complete Piano Sonatas, Op. 47 & Op. 64, Vol. 7
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Dussek: Sonatas, Op. 9 & Op. 75, Vol. 6
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Dussek: Complete Piano Sonatas, Op. 18 No. 2 & Op. 45
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Dussek: Concerto for Two Pianos & Chamber Works
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Dussek: Sonatas, Op. 5 No.3, Op. 24, Op. 43 & Op.61, Vol. 4
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Dussek: Complete Piano Sonatas, Op. 44 & Op. 77
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Dussek: Sonatas, Op. 39 & Op.25 No.2
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Dussek: Complete Piano Sonatas, Op. 10 & Op.31 No.2
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Dussek: Sonatas, Op. 35 Nos. 1-3, Leçons
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J.L. Dussek: Piano Music
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Dussek: The Complete Piano Sonatas, Vol. 2
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track: Piano Sonata in B-Flat Major, Op. 23: II. Pastorale - Allegro moderato con espressione
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track: Piano Sonata in B-Flat Major, Op. 9 No. 1: II. Rondo - Allegretto grazioso
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track: Piano Sonata in B-Flat Major, Op. 45 No. 1: III. Allegro da Ballo
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track: Piano Sonata in D Major, Op. 47 No. 1: II. Adagio
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track: Piano Sonata in D Major, Op. 31 No. 2: I. Allegro non tanto
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track: Piano Sonata in F Minor, Op. 77: I. Allegro moderato ma energico
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track: Piano Sonata in E-Flat Major, Op. 44: IV. Rondo - Allegro moderato ed espressivo
track: Piano Sonata in F-Sharp Minor, Op. 61: I. Lento patetico - Tempo agitato
track: Piano Sonata in G Major, Op. 47 No. 2: I. Allegro ma moderato ed espressivo
track: Piano Sonata in F-Sharp Minor, Op. 61: II. Tempo vivace e con fuoco quasi presto
track: Piano Sonata in G Major, Op. 47 No. 2: II. Rondo con espressivo - Andante con moto

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by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
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genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T01:44:32Z
audio: Piano Sonata in B-Flat Major, Op. 45 No. 1: II. Adagio patetico
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Piano Sonata in B-Flat Major, Op. 9 No. 1: II. Rondo - Allegretto grazioso
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duration: PT5M1S
duration ms: 301853
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in B-Flat Major, Op. 9 No. 1: II. Rondo - Allegretto grazioso
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Piano Sonata in C Major, Op. 39 No. 2: I. Allegro moderato
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duration: PT5M8S
duration ms: 308093
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377856
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: Piano Sonata in C Major, Op. 39 No. 2: I. Allegro moderato
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Piano Sonata in B-Flat Major, Op. 45 No. 1: III. Allegro da Ballo
type: MusicRecording
duration: PT5M37S
duration ms: 337013
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377870
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in B-Flat Major, Op. 45 No. 1: III. Allegro da Ballo
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Piano Sonata in G Minor, Op. 10 No. 2: I. Grave - Adagio non troppo
type: MusicRecording
duration: PT6M27S
duration ms: 387840
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377882
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  date published: 2026-07-31T13:06:57Z
audio: Piano Sonata in G Minor, Op. 10 No. 2: I. Grave - Adagio non troppo
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Piano Sonata in C Major, Op. 39 No. 2: II. Andante quasi larghetto
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duration: PT2M20S
duration ms: 140133
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377857
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb0493a04c792390556d439952b9d73f27a91fe259492382112d091f17344e3. 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/QMDA61377857.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in C Major, Op. 39 No. 2: II. Andante quasi larghetto
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Piano Sonata in G Major, Op. 45 No. 2: I. Larghetto sostenuto
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duration: PT7M58S
duration ms: 478080
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
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  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377871
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a935a013da75eb8da6fc99575b379ba71a3aee36fef3fac91ac395dcb02c10c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMDA61377871.
  date published: 2026-07-31T23:30:38Z
audio: Piano Sonata in G Major, Op. 45 No. 2: I. Larghetto sostenuto
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Piano Sonata in G Minor, Op. 10, No. 2: II. Vivace con spirito
type: MusicRecording
duration: PT5M27S
duration ms: 327000
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377883
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee40f2b3f4b1b51d1da362e89809d2cbcec7c5567d6191324615c31d01efdc69. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMDA61377883.
  date published: 2026-07-31T22:27:44Z
audio: Piano Sonata in G Minor, Op. 10, No. 2: II. Vivace con spirito
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Piano Sonata in C Major, Op. 39 No. 2: III. Rondo - Allegretto
type: MusicRecording
duration: PT3M12S
duration ms: 192306
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377858
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377858
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:48:18Z
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 0x7b7ecb4303141e6f1826beb79b2b94b565c40e079d1b3dce35fa858036302101. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QMDA61377858.
  date published: 2026-07-31T05:48:18Z
audio: Piano Sonata in C Major, Op. 39 No. 2: III. Rondo - Allegretto
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Piano Sonata in G Major, Op. 45 No. 2: II. Andantino con moto
type: MusicRecording
duration: PT5M59S
duration ms: 359493
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377872
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377872
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec86d6fd8709162cc3449718a323dadfecbab49a5fbc8b2e5f7baa222f269f0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377872.
  date published: 2026-07-31T21:25:57Z
audio: Piano Sonata in G Major, Op. 45 No. 2: II. Andantino con moto
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Piano Sonata in A Minor, Op. 18 No. 2: I. Agitato assai
type: MusicRecording
duration: PT4M27S
duration ms: 267320
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377884
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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 0x930efa4878864a837c2f901b4001629d003121ddc71594e6feb5858bd0346cac. 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/QMDA61377884.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in A Minor, Op. 18 No. 2: I. Agitato assai
  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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    type: PropertyValue
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  additional property: Valence (Positivity)
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Piano Sonata in D Major, Op. 47 No. 1: I. Allegro con spirito
type: MusicRecording
duration: PT4M19S
duration ms: 259665
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377859
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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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377859
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 0xeaa2d3ed86e34f34f37056bfb3b1881e29c1ce010b57d9ce75a1d12905cff7c1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377859.
  date published: 2026-07-31T12:24:41Z
audio: Piano Sonata in D Major, Op. 47 No. 1: I. Allegro con spirito
  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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    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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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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  additional property: Valence (Positivity)
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  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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Piano Sonata in A Minor, Op. 18 No. 2: II. Rondo - Allegro moderato
type: MusicRecording
duration: PT4M47S
duration ms: 287720
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377885
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377885
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 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 0x1cf7a74503c045319203fe1d452d6cb4536d108c491a21851f0b3463e797b6ec. 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/QMDA61377885.
  date published: 2026-07-08T03:53:27Z
audio: Piano Sonata in A Minor, Op. 18 No. 2: II. Rondo - Allegro moderato
  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
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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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  additional property: Liveness
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  additional property: Valence (Positivity)
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  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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Piano Sonata in D Major, Op. 47 No. 1: II. Adagio
type: MusicRecording
duration: PT2M45S
duration ms: 165093
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377860
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:30:38Z
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Piano Sonata in D Major, Op. 45 No. 3: II. Larghetto con moto
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
audio: Piano Sonata in D Major, Op. 45 No. 3: II. Larghetto con moto
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Piano Sonata in D Major, Op. 31 No. 2: I. Allegro non tanto
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:30:38Z
audio: Piano Sonata in D Major, Op. 31 No. 2: I. Allegro non tanto
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Piano Sonata in D Major, Op. 47 No. 1: III. Rondo a la militare - Allegro moderato
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by artist: Maria Garzón
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata in D Major, Op. 47 No. 1: III. Rondo a la militare - Allegro moderato
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Piano Sonata in D Major, Op. 31 No. 2: III. Allegro con espressione
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in D Major, Op. 31 No. 2: III. Allegro con espressione
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Piano Sonata in F Minor, Op. 77: I. Allegro moderato ma energico
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: Piano Sonata in F Minor, Op. 77: I. Allegro moderato ma energico
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Piano Sonata in E-Flat Major, Op. 44: I. Introduzione - Allegro moderato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: Piano Sonata in E-Flat Major, Op. 44: I. Introduzione - Allegro moderato
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Piano Sonata in A Minor, Op. 18 No. 2: III. Allegro non troppo
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additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:47:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5a6306d89732d4cda9bd2a3f0893436de91b0cd90bd90aaad103c3e0dcf7348
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/QMDA61377888
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 0xc5a6306d89732d4cda9bd2a3f0893436de91b0cd90bd90aaad103c3e0dcf7348. 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/QMDA61377888.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in A Minor, Op. 18 No. 2: III. Allegro non troppo
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 129.289
  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: 0.384
  additional property: Energy
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    value: 0.061
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.919
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.559
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.456
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Sonata in F Minor, Op. 77: II. Tempo di Minuetto
type: MusicRecording
duration: PT2M49S
duration ms: 169173
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377863
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:48:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc78ec141e712f9b484669b966a50d4d66b77c9d2e01af1024322ffc6837a5b62
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/QMDA61377863
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 0xc78ec141e712f9b484669b966a50d4d66b77c9d2e01af1024322ffc6837a5b62. 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/QMDA61377863.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in F Minor, Op. 77: II. Tempo di Minuetto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.185
  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: 0.272
  additional property: Energy
    type: PropertyValue
    value: 0.14
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.886
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.32
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.496
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Piano Sonata in E-Flat Major, Op. 44: II. Molto adagio e sostenuto
type: MusicRecording
duration: PT8M51S
duration ms: 531453
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377877
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:05:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaecc4c6ad7a43ecb4ea579e25f1b37d65a25b8aeb0f036c1ab8ad78cedbee11d
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/QMDA61377877
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 0xaecc4c6ad7a43ecb4ea579e25f1b37d65a25b8aeb0f036c1ab8ad78cedbee11d. 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/QMDA61377877.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata in E-Flat Major, Op. 44: II. Molto adagio e sostenuto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.819
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.421
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.921
  additional property: Liveness
    type: PropertyValue
    value: 0.07
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.043
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.902
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Sonata in F Minor, Op. 77: III. Adagio non troppo
type: MusicRecording
duration: PT5M42S
duration ms: 342106
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377864
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T07:41:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6a2967783861fc5b386f944d3b423bf99e124c4b9e6fe60fdf363e489732694b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377864
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
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 0x6a2967783861fc5b386f944d3b423bf99e124c4b9e6fe60fdf363e489732694b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMDA61377864.
  date published: 2026-07-31T08:26:41Z
audio: Piano Sonata in F Minor, Op. 77: III. Adagio non troppo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 93.466
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.344
  additional property: Energy
    type: PropertyValue
    value: 0.021
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.135
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.849
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Sonata in E-Flat Major, Op. 44: IV. Rondo - Allegro moderato ed espressivo
type: MusicRecording
duration: PT7M59S
duration ms: 479746
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377879
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:12:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd0566e8313af44858d92694139dee6636c2ca4662b749a9590c0ede62f0e0a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960459
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377879
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
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 0xcd0566e8313af44858d92694139dee6636c2ca4662b749a9590c0ede62f0e0a0. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QMDA61377879.
  date published: 2026-07-31T20:22:46Z
audio: Piano Sonata in E-Flat Major, Op. 44: IV. Rondo - Allegro moderato ed espressivo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.258
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.327
  additional property: Energy
    type: PropertyValue
    value: 0.06
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.91
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.219
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.197
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Sonata in F-Sharp Minor, Op. 61: I. Lento patetico - Tempo agitato
type: MusicRecording
duration: PT10M54S
duration ms: 654306
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377891
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T02:45:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa02f08385ca2a795b76f4a5b4a7ff17967026917616321cedd106f4327e184bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960500
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377891
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:13:03Z
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 0xa02f08385ca2a795b76f4a5b4a7ff17967026917616321cedd106f4327e184bc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMDA61377891.
  date published: 2026-08-01T03:13:03Z
audio: Piano Sonata in F-Sharp Minor, Op. 61: I. Lento patetico - Tempo agitato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.354
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.337
  additional property: Energy
    type: PropertyValue
    value: 0.021
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.884
  additional property: Liveness
    type: PropertyValue
    value: 0.113
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.101
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Piano Sonata in G Major, Op. 47 No. 2: I. Allegro ma moderato ed espressivo
type: MusicRecording
duration: PT5M14S
duration ms: 314520
explicit: false
by artist: Jan Ladislav Dussek
by artist: Maria Garzón
in album: Dussek: The Complete Piano Sonatas, Vol. 1
  type: MusicAlbum
  date published: 2013-10-29
genre: classical
genre: classical-piano
isrc code: QMDA61377866
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T07:14:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe834a6a5a5d1e962fa42dd889bcfbeb81266a518788a9e37af7247581620fd96
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61377866
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
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 0xe834a6a5a5d1e962fa42dd889bcfbeb81266a518788a9e37af7247581620fd96. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMDA61377866.
  date published: 2026-07-31T08:26:41Z
audio: Piano Sonata in G Major, Op. 47 No. 2: I. Allegro ma moderato ed espressivo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.443
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.348
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Dussek: Piano Concerto in F Major, Piano Concerto in B-Flat Major & Piano Sonata in A-Flat Major
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Dussek, J.L.: Duo Concertants, Op. 69, Nos. 1 and 3 / Sonata, Op. 61, "Elegie Harmonique"
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J. L. Dussek: Piano Variations, Pieces, Fantasia
type: MusicAlbum
date published: 2013

Dussek: Grand Sonata
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Piano Works of Jan Ladislav Dussek, Vol. 1
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date published: 2011-02-01

Jan Ladislav Dussek: Streichquartette op. 60
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date published: 2010-08-02

Dussek, J.L.: Piano Sonatas - Opp. 9 and 77
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date published: 2008-01-01

Dussek: 3 Piano Sonatas
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date published: 2006-03-01

Dussek: The Piano Sonatas
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date published: 2006

J.L. Dussek: Sonatas
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date published: 2005-02-01

Jan Ladislav Dussek: Duos for Harp and Pianoforte
type: MusicAlbum
date published: 2002-08-19

Dussek: Messe solomnelle in G Major, C. 256
type: MusicAlbum
date published: 2020-10-02