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album: Field: Piano Concertos Nos. 2 & 7 and Piano Sonata No. 4
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  track: Piano Concerto No. 2 in A-Flat Major, H. 31: V. Poco adagio
  track: Piano Concerto No. 2 in A-Flat Major, H. 31: VI. Rondo. Moderato innocente
  track: Piano Concerto No. 4 in E-Flat Major, H. 28: I. Allegro moderato
  track: Piano Concerto No. 4 in E-Flat Major, H. 28: III. Rondo. Allegretto
  track: Piano Concerto No. 6 in C Major, H. 49: II. Larghetto
  track: Piano Concerto No. 7 in C Minor, H. 58: I. Allegro moderato maestoso - Lento - Tempo I
  track: Piano Concerto No. 1 in E-Flat Major, H. 27: I. Allegro
  track: Piano Concerto No. 1 in E-Flat Major, H. 27: II. Air écossais. Adagio non troppo
  track: Piano Concerto No. 1 in E-Flat Major, H. 27: III. Rondo finale. Allegro vivace
  track: Piano Concerto No. 2 in A-Flat Major, H. 31: IV. Allegro moderato
  track: Piano Concerto No. 3 in E-Flat Major, H. 32: I. Allegro moderato
  track: Piano Concerto No. 3 in E-Flat Major, H. 32: II. Nocturne No. 2 in C Minor, H. 25. Moderato e molto espressivo
  track: Piano Concerto No. 3 in E-Flat Major, H. 32: III. Rondo. Tempo di polacca
  track: Piano Concerto No. 4 in E-Flat Major, H. 28: II. Siciliano. Un poco adagio
  track: Piano Concerto No. 5 in C Major, H. 39 'L'incendie par l'orage': I. Allegro moderato
track: Largo in C Minor - Upright Piano
track: Nocturne No. 8 in A Major, H. 46
track: Prelude in C Minor - Grand Piano
track: Prelude in C Minor - Upright Piano
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track: Nocturne No. 1 in E Flat Major, H.24
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track: Nocturne No. 2 in C Minor, H.25
track: Largo in C Minor - Grand Piano
track: Nocturne No. 1 in E-Flat Major. Molto moderato
track: Nocturne No. 5 in B-Flat Major, H 37
track: Nocturne No. 5 in B-Flat Major, H. 37

Prelude in C Minor - Upright Piano
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Piano Concerto No. 2 in A-Flat Major, H. 31: V. Poco adagio
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Piano Concerto No. 2 in A-Flat Major, H. 31: VI. Rondo. Moderato innocente
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Piano Concerto No. 4 in E-Flat Major, H. 28: I. Allegro moderato
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Piano Concerto No. 4 in E-Flat Major, H. 28: III. Rondo. Allegretto
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Piano Concerto No. 6 in C Major, H. 49: II. Larghetto
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  date published: 2026-07-08T08:56:20Z
audio: Piano Concerto No. 6 in C Major, H. 49: II. Larghetto
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Piano Concerto No. 7 in C Minor, H. 58: I. Allegro moderato maestoso - Lento - Tempo I
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audio: Piano Concerto No. 7 in C Minor, H. 58: I. Allegro moderato maestoso - Lento - Tempo I
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Piano Concerto No. 1 in E-Flat Major, H. 27: I. Allegro
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  date published: 2026-07-31T00:26:26Z
audio: Piano Concerto No. 1 in E-Flat Major, H. 27: I. Allegro
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Piano Concerto No. 1 in E-Flat Major, H. 27: II. Air écossais. Adagio non troppo
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  date published: 2026-07-30T22:27:30Z
audio: Piano Concerto No. 1 in E-Flat Major, H. 27: II. Air écossais. Adagio non troppo
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Piano Concerto No. 1 in E-Flat Major, H. 27: III. Rondo finale. Allegro vivace
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  date published: 2026-07-31T13:06:57Z
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Piano Concerto No. 2 in A-Flat Major, H. 31: IV. Allegro moderato
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  date published: 2026-07-31T00:26:26Z
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Piano Concerto No. 3 in E-Flat Major, H. 32: I. Allegro moderato
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Piano Concerto No. 3 in E-Flat Major, H. 32: II. Nocturne No. 2 in C Minor, H. 25. Moderato e molto espressivo
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  date published: 2026-07-31T17:29:52Z
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Piano Concerto No. 3 in E-Flat Major, H. 32: III. Rondo. Tempo di polacca
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Piano Concerto No. 4 in E-Flat Major, H. 28: II. Siciliano. Un poco adagio
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  date published: 2026-08-01T01:44:32Z
audio: Piano Concerto No. 4 in E-Flat Major, H. 28: II. Siciliano. Un poco adagio
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Piano Concerto No. 5 in C Major, H. 39 'L'incendie par l'orage': I. Allegro moderato
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Largo in C Minor - Upright Piano
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  value: 2026-07-07T11:43:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173a540b811eef001913cf3745289f4d1be3c0ec36ab3a664b659f2738338f87. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEN962302430.
  date published: 2026-07-07T11:43:09Z
audio: Largo in C Minor - Upright Piano
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.446
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.525
  additional property: Energy
    type: PropertyValue
    value: 0.005
  additional property: Speechiness
    type: PropertyValue
    value: 0.366
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.951
  additional property: Liveness
    type: PropertyValue
    value: 0.079
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.7
  additional property: Loudness (dB)
    type: PropertyValue
    value: -38.165
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Nocturne No. 8 in A Major, H. 46
type: MusicRecording
duration: PT3M25S
duration ms: 205066
explicit: false
by artist: John Field
by artist: Michael Collins
by artist: Michael McHale
in album: The Lyrical Clarinet, Vol. 2
  type: MusicAlbum
  date published: 2016-06-01
popularity: 10
isrc code: GBLWD1602908
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T04:23:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb624e7d05191504ead1ebd1909dbeaa4b2c7fac64ddc5bddf6e0c42d875d71a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1602908
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb624e7d05191504ead1ebd1909dbeaa4b2c7fac64ddc5bddf6e0c42d875d71a6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLWD1602908.
  date published: 2026-07-02T03:30:09Z
audio: Nocturne No. 8 in A Major, H. 46
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.739
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.175
  additional property: Energy
    type: PropertyValue
    value: 0.008
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.56
  additional property: Liveness
    type: PropertyValue
    value: 0.07
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.101
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.589
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Prelude in C Minor - Grand Piano
type: MusicRecording
duration: PT0M38S
duration ms: 38816
explicit: false
by artist: John Field
by artist: Alice Sara Ott
in album: Echoes Of Life (Deluxe Edition)
  type: MusicAlbum
  date published: 2023-10-27
popularity: 5
isrc code: DEN962302100
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:23:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6e330c064e6172ff4695e3de1b49c592d8606ba9926a84cdf0270a256fc9ff92
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962302100
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957073
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T18:39:05+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e330c064e6172ff4695e3de1b49c592d8606ba9926a84cdf0270a256fc9ff92. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEN962302100.
  date published: 2026-07-07T18:39:05Z
audio: Prelude in C Minor - Grand Piano
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.141
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.197
  additional property: Energy
    type: PropertyValue
    value: 0.029
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.839
  additional property: Liveness
    type: PropertyValue
    value: 0.143
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.15
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.041
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Nocturne No. 2 in C Minor, H.25
type: MusicRecording
duration: PT3M11S
duration ms: 191853
explicit: false
by artist: John Field
by artist: Elizabeth Joy Roe
in album: Work Focus 2024
  type: MusicAlbum
  date published: 2024-07-03
popularity: 3
isrc code: GBF071504660
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T22:20:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6e94b4b8b60378b00c6ddc2022b82df9f9228c7a33879000a6e5b77d1212f808
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504660
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e94b4b8b60378b00c6ddc2022b82df9f9228c7a33879000a6e5b77d1212f808. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBF071504660.
  date published: 2026-07-02T05:09:12Z
audio: Nocturne No. 2 in C Minor, H.25
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.073
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.305
  additional property: Energy
    type: PropertyValue
    value: 0.064
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.924
  additional property: Liveness
    type: PropertyValue
    value: 0.1
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.045
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.438
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Largo in C Minor - Grand Piano
type: MusicRecording
duration: PT1M48S
duration ms: 108928
explicit: false
by artist: John Field
by artist: Alice Sara Ott
in album: Echoes Of Life (Deluxe Edition)
  type: MusicAlbum
  date published: 2023-10-27
popularity: 6
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a52b2395c8a22c2e962605150e7928c49732e0545a5060aeed94a074a4c4a59. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEN962302160.
  date published: 2026-07-29T11:07:37Z
audio: Largo in C Minor - Grand Piano
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.422
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.584
  additional property: Energy
    type: PropertyValue
    value: 0.003
  additional property: Speechiness
    type: PropertyValue
    value: 0.08
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.973
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.715
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.696
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEN962302160
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960095
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T11:07:37+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962302160
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960095
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960095
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:07:37+00:00
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

Nocturne No. 1 in E-Flat Major. Molto moderato
type: MusicRecording
duration: PT3M39S
duration ms: 219000
explicit: false
by artist: John Field
by artist: John O'Conor
in album: a calm playlist for reading, studying or writing
  type: MusicAlbum
  date published: 2024-12-17
popularity: 6
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c85faf40a95321b47f17efa676a50d287ad69ea8b66b9ba0c3c0f6d3e514e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USTE10301199.
  date published: 2026-07-29T21:51:49Z
audio: Nocturne No. 1 in E-Flat Major. Molto moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.958
  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: 0.272
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.915
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.156
  additional property: Loudness (dB)
    type: PropertyValue
    value: -39.297
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USTE10301199
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960150
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T21:51:49+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10301199
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960150
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960150
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:51:49+00:00
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

Nocturne No. 5 in B-Flat Major, H 37
type: MusicRecording
duration: PT2M54S
duration ms: 174693
explicit: false
by artist: John Field
by artist: Benjamin Frith
in album: Classical for Pets
  type: MusicAlbum
  date published: 2023-12-08
popularity: 3
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac779ca1b4896ef4563c5fc9a29e5df1e44e41f5aa55775f60db91b74ce3062. 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/HKI199751605.
  date published: 2026-07-31T05:48:18Z
audio: Nocturne No. 5 in B-Flat Major, H 37
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.327
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.296
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.081
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.129
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.03
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: HKI199751605
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960138
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199751605
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
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

Nocturne No. 5 in B-Flat Major, H. 37
type: MusicRecording
duration: PT3M16S
duration ms: 196666
explicit: false
by artist: John Field
by artist: Michael Collins
by artist: Michael McHale
in album: The Lyrical Clarinet, Vol. 2
  type: MusicAlbum
  date published: 2016-06-01
popularity: 3
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c4fada4b237b28518892d749fbb0aa380b6b7f35c8921c4d0d58f0fa31927f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1602904.
  date published: 2026-07-30T01:32:48Z
audio: Nocturne No. 5 in B-Flat Major, H. 37
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Nocturne No. 1 in E Flat Major, H.24
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