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genre: neoclassical
genre: opera
description: Kate Lindsey (born 1980) is a mezzo-soprano opera singer from the United States. She is married to the documentary filmmaker Olly Lambert. Lindsey was born in Richmond, Virginia, and holds a Bachelor
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subject of: OpenTimestamps Proof of Existence
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
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  track: L'incoronazione di Poppea, SV 308, Atto I, Scena 2: Chi parla, chi parla? (Ottone, Due soldati)
  track: L'incoronazione di Poppea, SV 308, Atto I, Scena 3: Signor, deh, non partire (Poppea, Nerone)
  track: L'incoronazione di Poppea, SV 308, Atto I, Scena 4: Speranza tu mi vai (Poppea, Arnalta )
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  track: L'incoronazione di Poppea, SV 308, Atto III, Scena 8: Pur ti miro - pur ti godo (Poppea, Nerone)
album: Chill with Mozart (Enjoy the coolest melodies of Wolfgang Amadeus Mozart)
album: Tiranno
album: Arianna
album: Debussy, Ravel & Chausson
album: Thousands of Miles
album: Follow, Poet
album: Abendlied
album: La morte di Nerone: II. Aria. "Quella morte, che per gioco"
album: Ah! Crudel, nel pianto moi, HWV 78: II. Aria "Ah, crudel, nel pianto moi"
album: NYFOS Records: The Singles, Vol. I
album: Mozart: La clemenza di Tito (Live Recording at Théâtre des Champs-Élysées)
album: Mahler: Symphony No. 3 in D Minor (Live)
album: harmonia mundi Autumn-Winter 2019
album: Mohammed Fairouz: No Orpheus

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L'incoronazione di Poppea, SV 308, Prologo: Human non è, non è celeste core (Fortuna, Virtù, Amore )
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T22:27:30Z
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L'incoronazione di Poppea, SV 308, Atto I, Scena 1: E pur io torno qui, qual linea al centro (Ottone )
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
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L'incoronazione di Poppea, SV 308, Atto I, Scena 2: Chi parla, chi parla? (Ottone, Due soldati)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
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L'incoronazione di Poppea, SV 308, Atto I, Scena 3: Signor, deh, non partire (Poppea, Nerone)
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  date published: 2019-08-30
popularity: 3
genre: classical
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  date published: 2026-07-31T02:19:15Z
audio: L'incoronazione di Poppea, SV 308, Atto I, Scena 3: Signor, deh, non partire (Poppea, Nerone)
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L'incoronazione di Poppea, SV 308, Atto I, Scena 4: Speranza tu mi vai (Poppea, Arnalta )
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popularity: 2
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:25:34Z
audio: L'incoronazione di Poppea, SV 308, Atto I, Scena 4: Speranza tu mi vai (Poppea, Arnalta )
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L'incoronazione di Poppea, SV 308, Atto I, Scena 5: Disprezzata Regina (Ottavia, Nutrice)
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popularity: 2
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T01:44:32Z
audio: L'incoronazione di Poppea, SV 308, Atto I, Scena 5: Disprezzata Regina (Ottavia, Nutrice)
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L'incoronazione di Poppea, SV 308, Atto I, Scena 9: Son risoluto al fine (Nerone, Seneca)
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popularity: 1
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: L'incoronazione di Poppea, SV 308, Atto I, Scena 9: Son risoluto al fine (Nerone, Seneca)
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L'incoronazione di Poppea, SV 308, Atto III, Scena 8: Pur ti miro - pur ti godo (Poppea, Nerone)
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  date published: 2019-08-30
popularity: 14
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: L'incoronazione di Poppea, SV 308, Atto III, Scena 8: Pur ti miro - pur ti godo (Poppea, Nerone)
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Chill with Mozart (Enjoy the coolest melodies of Wolfgang Amadeus Mozart)
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Tiranno
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  subject of: OpenTimestamps Proof of Existence
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    additional property: Liveness
      type: PropertyValue
      value: 0.089
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.09
    additional property: Loudness (dB)
      type: PropertyValue
      value: -23.844
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Arianna
type: MusicAlbum
date published: 2020-01-24

Debussy, Ravel & Chausson
type: MusicAlbum
date published: 2017-10-01

Thousands of Miles
type: MusicAlbum
date published: 2017-05-01
track: Nanna’s Lied
  type: MusicRecording
  duration: PT3M24S
  duration ms: 204240
  explicit: false
  by artist: Kate Lindsey
  by artist: Baptiste Trotignon
  in album: Thousands of Miles
    type: MusicAlbum
    date published: 2017-05-01
  isrc code: FR50X1627201
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T11:28:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x66a6b4cdc1d1533e4daa5ae0e5e1260d93f93c7e31641ad6f4a3cf8cb8fc2e4b
  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/FR50X1627201
  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 0x66a6b4cdc1d1533e4daa5ae0e5e1260d93f93c7e31641ad6f4a3cf8cb8fc2e4b. 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/FR50X1627201.
    date published: 2026-07-08T03:20:19Z
  audio: Nanna’s Lied
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.839
    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: 0.446
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.058
    additional property: Acousticness
      type: PropertyValue
      value: 0.983
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.726
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
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track: The Threepenny Opera: Pirate Jenny - Barbara Song
  type: MusicRecording
  duration: PT4M23S
  duration ms: 263253
  explicit: false
  by artist: Kate Lindsey
  by artist: Baptiste Trotignon
  in album: Thousands of Miles
    type: MusicAlbum
    date published: 2017-05-01
  isrc code: FR50X1627202
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-30T16:32:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2f9528dd22d5e273230594f3b4c80e4be95f0007c7cd126e8dd57918416d7430
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960285
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960285
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1627202
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T17:26:40Z
  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 0x2f9528dd22d5e273230594f3b4c80e4be95f0007c7cd126e8dd57918416d7430. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/FR50X1627202.
    date published: 2026-07-30T17:26:40Z
  audio: The Threepenny Opera: Pirate Jenny - Barbara Song
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 136.946
    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: 0.429
    additional property: Energy
      type: PropertyValue
      value: 0.078
    additional property: Speechiness
      type: PropertyValue
      value: 0.059
    additional property: Acousticness
      type: PropertyValue
      value: 0.98
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.081
    additional property: Loudness (dB)
      type: PropertyValue
      value: -23.002
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major

Follow, Poet
type: MusicAlbum
date published: 2015-01-27

Abendlied
type: MusicAlbum
date published: 2024-01-05
track: Abendlied
  type: MusicRecording
  duration: PT3M37S
  duration ms: 217276
  explicit: false
  by artist: Georg Jokl
  by artist: Kate Lindsey
  by artist: Steven Blier
  by artist: New York Festival Of Song
  in album: Abendlied
    type: MusicAlbum
    date published: 2024-01-05
  popularity: 22
  isrc code: QZZEB2318400
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T07:24:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9b8b8c51e704e5564edde29657a4a044c50a5366c42cfaca3cc9a1d56d14aaea
  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/QZZEB2318400
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x9b8b8c51e704e5564edde29657a4a044c50a5366c42cfaca3cc9a1d56d14aaea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZEB2318400.
    date published: 2026-07-02T03:55:08Z
  audio: Abendlied
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.206
    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: 0.307
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.009
    additional property: Liveness
      type: PropertyValue
      value: 0.112
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.074
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.238
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

La morte di Nerone: II. Aria. "Quella morte, che per gioco"
type: MusicAlbum
date published: 2021-04-30

Ah! Crudel, nel pianto moi, HWV 78: II. Aria "Ah, crudel, nel pianto moi"
type: MusicAlbum
date published: 2019-12-27

NYFOS Records: The Singles, Vol. I
type: MusicAlbum
date published: 2024-03-08
track: En sourdine
  type: MusicRecording
  duration: PT3M22S
  duration ms: 202093
  explicit: false
  by artist: Bernarda Fink
  by artist: Steven Blier
  by artist: New York Festival Of Song
  in album: NYFOS Records: The Singles, Vol. I
    type: MusicAlbum
    date published: 2024-03-08
  popularity: 33
  isrc code: AU3SE2200192
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-05T17:17:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc4f84f6a6c75e4f7739676b56a5c2d266f13d82081d9e042074166a95f85aaf0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953513
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953513
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AU3SE2200192
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:47:07Z
  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 0xc4f84f6a6c75e4f7739676b56a5c2d266f13d82081d9e042074166a95f85aaf0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AU3SE2200192.
    date published: 2026-06-13T12:47:07Z
  audio: En sourdine
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 128.985
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.352
    additional property: Energy
      type: PropertyValue
      value: 0.175
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.104
    additional property: Liveness
      type: PropertyValue
      value: 0.101
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.091
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.754
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Psyché - Live
  type: MusicRecording
  duration: PT3M26S
  duration ms: 206478
  explicit: false
  by artist: Lorraine Hunt Lieberson
  by artist: Steven Blier
  by artist: New York Festival Of Song
  in album: NYFOS Records: The Singles, Vol. I
    type: MusicAlbum
    date published: 2024-03-08
  genre: classical-mezzo-soprano
  isrc code: QZZEB2351484
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T08:08:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2bfb4759cd313761c95533325275285dfceefc0db8f15dc074bc608fa3c1e074
  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/QZZEB2351484
  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 0x2bfb4759cd313761c95533325275285dfceefc0db8f15dc074bc608fa3c1e074. 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/QZZEB2351484.
    date published: 2026-07-08T03:20:19Z
  audio: Psyché - Live
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 96.715
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.311
    additional property: Energy
      type: PropertyValue
      value: 0.086
    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
      value: 0.982
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.092
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.061
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.996
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Addio ai Viennesi - Live
  type: MusicRecording
  duration: PT4M53S
  duration ms: 293083
  explicit: false
  by artist: Michael Spyres
  by artist: Steven Blier
  by artist: New York Festival Of Song
  in album: NYFOS Records: The Singles, Vol. I
    type: MusicAlbum
    date published: 2024-03-08
  isrc code: QZZEB2351481
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T03:49:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xab46e42bdcd64d30dfec8810cfcdd90de754fa6341f2b326ba215f391865892e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Addio ai Viennesi - Live
track: Abendlied

OTSBitcoinBlock
type: PropertyValue
value: 956889

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956889

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2351481

OTSTimestamp
type: PropertyValue
value: 2026-07-06T06:56:49Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab46e42bdcd64d30dfec8810cfcdd90de754fa6341f2b326ba215f391865892e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZEB2351481.
date published: 2026-07-06T06:56:49Z

Addio ai Viennesi - Live
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 99.903
additional property: Musical Key
  type: PropertyValue
  value: 8
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.19
additional property: Energy
  type: PropertyValue
  value: 0.303
additional property: Speechiness
  type: PropertyValue
  value: 0.036
additional property: Acousticness
  type: PropertyValue
  value: 0.968
additional property: Instrumentalness
  type: PropertyValue
  value: 0.017
additional property: Liveness
  type: PropertyValue
  value: 0.648
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.169
additional property: Loudness (dB)
  type: PropertyValue
  value: -17.222
additional property: Key Name
  type: PropertyValue
  value: Ab
additional property: Mode Name
  type: PropertyValue
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Abendlied
type: MusicRecording
duration: PT3M37S
duration ms: 217276
explicit: false
by artist: Kate Lindsey
by artist: Steven Blier
by artist: New York Festival Of Song
in album: NYFOS Records: The Singles, Vol. I
  type: MusicAlbum
  date published: 2024-03-08
isrc code: QZZEB2318400
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T07:24:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b8b8c51e704e5564edde29657a4a044c50a5366c42cfaca3cc9a1d56d14aaea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2318400
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0x9b8b8c51e704e5564edde29657a4a044c50a5366c42cfaca3cc9a1d56d14aaea. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZEB2318400.
  date published: 2026-07-06T06:56:49Z
audio: Abendlied
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.206
  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: 0.307
  additional property: Energy
    type: PropertyValue
    value: 0.134
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.009
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.074
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.238
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

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