Alexander Knaifel
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genre: russian-contemporary-classical
description: thumb|right|Knaifel in 1982 Alexander Aronovich Knaifel (; also Knayfel, Knayfel, or Kneifel; 28 November 1943 – 27 June 2024) was a Soviet composer from Tashkent, Uzbekistan, known for his operas The
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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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album: Mstislav Rostropovich plays Cello Works
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  date published: 2008-03-01
  track: Cassadó: Toccata in the Style of Frescobaldi
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    by artist: Mstislav Rostropovich
    by artist: Gaspar Cassadó
    by artist: Herbert Tachezi
    in album: Mstislav Rostropovich plays Cello Works
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      date published: 2008-03-01
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:30:09Z
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  track: Marcello / Arr Bach, JS : Concerto in D minor [BWV974] : II Adagio
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:30:09Z
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  track: Bach, JS / Arr. Kodály for Cello and Organ: 3 Chorale Preludes: No. 2, Vater unser im Himmelreich, BWV 762
  track: Handel / Arr. Pekker for Cello and Organ: Te Deum in D Major, HWV 283 "Dettingen": XIV. Vouchsafe, O Lord
  track: Bach, JS / Arr. Siloti: Toccata, Adagio and Fugue in C Major, BWV 564: Adagio
album: Knaifel: Lukomoriye
album: Come, Let Us Worship
album: Alexander Knaifel: Blazhenstva
album: Fermata. Compiled by Alexey Munipov
album: Knaifel: The Canterville Ghost
album: String Trios from the East
album: Knaifel: Amicta Sole
album: Knaifel: Svete Tikhiy
album: Knaifel: Make me drunk with your kisses - Matthews, David: Romanza (Live)
album: Knaifel: Psalm 51(50) for Cello Solo
album: Chopin and Antichopin
album: A Place Between
album: Cantante E Tranquillo
album: Knaifel, Barrière: Lux Aeterna
album: Music for Cello Solo
album: Metamorphoses
album: Le tombeau de Stravinsky
album: Sound Review–2 3/3
album: Torrid Classics - Voluptuous Music for Passionate Nights

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duration: PT4M14S
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by artist: Johann Sebastian Bach
by artist: Mstislav Rostropovich
by artist: Herbert Tachezi
in album: Mstislav Rostropovich plays Cello Works
  type: MusicAlbum
  date published: 2008-03-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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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: 2026-07-31T21:25:57Z
audio: Bach, JS / Arr. Kodály for Cello and Organ: 3 Chorale Preludes: No. 2, Vater unser im Himmelreich, BWV 762
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Handel / Arr. Pekker for Cello and Organ: Te Deum in D Major, HWV 283 "Dettingen": XIV. Vouchsafe, O Lord
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by artist: Mstislav Rostropovich
by artist: Herbert Tachezi
in album: Mstislav Rostropovich plays Cello Works
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  date published: 2008-03-01
genre: classical
genre: opera
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T10:20:10Z
audio: Handel / Arr. Pekker for Cello and Organ: Te Deum in D Major, HWV 283 "Dettingen": XIV. Vouchsafe, O Lord
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Bach, JS / Arr. Siloti: Toccata, Adagio and Fugue in C Major, BWV 564: Adagio
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by artist: Mstislav Rostropovich
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genre: classical
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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: 2026-07-31T10:20:10Z
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Knaifel: Lukomoriye
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date published: 2018-04-20
track: O Comforter
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  by artist: Lege Artis Chamber Choir
  by artist: Boris Abalian
  in album: Knaifel: Lukomoriye
    type: MusicAlbum
    date published: 2018-04-20
  genre: russian-contemporary-classical
  isrc code: DEB331243601
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xd28a53cdb8645cde720033d2cb69ef556fbba7c70c5776f6e783d768760ae3f8
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  additional property: OTSBitcoinBlock
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    value: 960277
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960277
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331243601
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T16:10:47Z
  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 0xd28a53cdb8645cde720033d2cb69ef556fbba7c70c5776f6e783d768760ae3f8. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEB331243601.
    date published: 2026-07-30T16:10:47Z
  audio: O Comforter
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 100.678
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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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)
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    additional property: Mode Name
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Come, Let Us Worship
type: MusicAlbum
date published: 2012-01-01

Alexander Knaifel: Blazhenstva
type: MusicAlbum
date published: 2008-09-26
track: Blazhenstva
  type: MusicRecording
  duration: PT36M43S
  duration ms: 2203000
  explicit: false
  by artist: Alexander Knaifel
  by artist: Ivan Monighetti
  by artist: Tatiana Melentieva
  by artist: Piotr Migunov
  by artist: State Hermitage Orchestra
  by artist: Lege Artis Chamber Choir
  in album: Alexander Knaifel: Blazhenstva
    type: MusicAlbum
    date published: 2008-09-26
  genre: russian-contemporary-classical
  isrc code: DEB330695702
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T19:58:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6b71ac4f5824d5017fc505099d614c8a3c4e8958a73ff579e9ee6137bd2eba50
  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/DEB330695702
  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 0x6b71ac4f5824d5017fc505099d614c8a3c4e8958a73ff579e9ee6137bd2eba50. 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/DEB330695702.
    date published: 2026-07-31T20:22:46Z
  audio: Blazhenstva
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 141.134
    additional property: Musical Key
      type: PropertyValue
      value: 9
    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: 0.158
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
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    additional property: Instrumentalness
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      value: 0.378
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.024
    additional property: Loudness (dB)
      type: PropertyValue
      value: -38.575
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

Fermata. Compiled by Alexey Munipov
type: MusicAlbum
date published: 2019-05-24

Knaifel: The Canterville Ghost
type: MusicAlbum
date published: 2012-12-01

String Trios from the East
type: MusicAlbum
date published: 2012-02-10

Knaifel: Amicta Sole
type: MusicAlbum
date published: 2005-02-21

Knaifel: Svete Tikhiy
type: MusicAlbum
date published: 2002-10-21
track: In Air Clear And Unseen: 1. In Some Exhausted Reverie
  type: MusicRecording
  duration: PT9M45S
  duration ms: 585466
  explicit: false
  by artist: Alexander Knaifel
  by artist: Oleg Malov
  by artist: Keller Quartett
  in album: Knaifel: Svete Tikhiy
    type: MusicAlbum
    date published: 2002-10-21
  genre: russian-contemporary-classical
  isrc code: DEB330076301
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb3e3564469cb2caa925b5a36c3cfb87390f58caf3b68fc646819d3ac835b20cf
  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/DEB330076301
  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 0xb3e3564469cb2caa925b5a36c3cfb87390f58caf3b68fc646819d3ac835b20cf. 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/DEB330076301.
    date published: 2026-07-08T03:20:19Z
  audio: In Air Clear And Unseen: 1. In Some Exhausted Reverie
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 97.447
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.194
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.908
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.203
    additional property: Liveness
      type: PropertyValue
      value: 0.085
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.123
    additional property: Loudness (dB)
      type: PropertyValue
      value: -46.54
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: In Air Clear And Unseen: 2. An Autumn Evening
  type: MusicRecording
  duration: PT7M11S
  duration ms: 431000
  explicit: false
  by artist: Alexander Knaifel
  by artist: Oleg Malov
  by artist: Keller Quartett
  in album: Knaifel: Svete Tikhiy
    type: MusicAlbum
    date published: 2002-10-21
  genre: russian-contemporary-classical
  isrc code: DEB330076302
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T18:27:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x401c574ecce3abf36dd3f9fbb4e6974ee94aea982defa379a5ecd9e922f6ab51
  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/DEB330076302
  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 0x401c574ecce3abf36dd3f9fbb4e6974ee94aea982defa379a5ecd9e922f6ab51. 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/DEB330076302.
    date published: 2026-07-08T03:20:19Z
  audio: In Air Clear And Unseen: 2. An Autumn Evening
    type: AudioObject
    additional property: Tempo (BPM)
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    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: 0.095
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.947
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.551
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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      value: 0.027
    additional property: Loudness (dB)
      type: PropertyValue
      value: -38.001
    additional property: Key Name
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      value: C#
    additional property: Mode Name
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track: In Air Clear And Unseen: 3. In Air Clear And Unseen
  type: MusicRecording
  duration: PT6M32S
  duration ms: 392666
  explicit: false
  by artist: Alexander Knaifel
  by artist: Oleg Malov
  by artist: Keller Quartett
  in album: Knaifel: Svete Tikhiy
    type: MusicAlbum
    date published: 2002-10-21
  genre: russian-contemporary-classical
  isrc code: DEB330076303
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T10:05:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5555040da6da596761806fbdaf762d9081cc57a7051f5078c4cfd488467d3266
  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: In Air Clear And Unseen: 3. In Air Clear And Unseen
track: Svete Tikhiy (O Gladsome Light): 1. Ringing Of The Church Bells
track: Svete Tikhiy (O Gladsome Light): 2. The Song Of The Most Holy Theotokos
track: Svete Tikhiy (O Gladsome Light): 3. Svete Tikhiy (O Gladsome Light)

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960389

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960389

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330076303

OTSTimestamp
type: PropertyValue
value: 2026-07-31T10:20:10Z

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 0x5555040da6da596761806fbdaf762d9081cc57a7051f5078c4cfd488467d3266. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEB330076303.
date published: 2026-07-31T10:20:10Z

In Air Clear And Unseen: 3. In Air Clear And Unseen
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 97.95
additional property: Musical Key
  type: PropertyValue
  value: 8
additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.062
additional property: Energy
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additional property: Speechiness
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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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  value: 0.036
additional property: Loudness (dB)
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  value: -44.845
additional property: Key Name
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additional property: Mode Name
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Svete Tikhiy (O Gladsome Light): 1. Ringing Of The Church Bells
type: MusicRecording
duration: PT0M47S
duration ms: 47000
explicit: false
by artist: Alexander Knaifel
by artist: Tatiana Melentieva
by artist: Andrei Siegle
in album: Knaifel: Svete Tikhiy
  type: MusicAlbum
  date published: 2002-10-21
genre: russian-contemporary-classical
isrc code: DEB330076304
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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/DEB330076304
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 0xa64c2a767b3c2792859f0e9058c9b9c1f9d9e51a28f5bde0bb383f4824bf6254. 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/DEB330076304.
  date published: 2026-07-31T12:24:41Z
audio: Svete Tikhiy (O Gladsome Light): 1. Ringing Of The Church Bells
  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: Danceability
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  additional property: Energy
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  additional property: Speechiness
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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)
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  additional property: Key Name
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Svete Tikhiy (O Gladsome Light): 2. The Song Of The Most Holy Theotokos
type: MusicRecording
duration: PT20M28S
duration ms: 1228426
explicit: false
by artist: Alexander Knaifel
by artist: Tatiana Melentieva
by artist: Andrei Siegle
in album: Knaifel: Svete Tikhiy
  type: MusicAlbum
  date published: 2002-10-21
genre: russian-contemporary-classical
isrc code: DEB330076305
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x5c8f086745765781633a936cd66fe5475a4bfdbcfc1b4ed31b48e6aed6a28f09
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
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Knaifel: Make me drunk with your kisses - Matthews, David: Romanza (Live)
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A Place Between
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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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Cantante E Tranquillo
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Knaifel, Barrière: Lux Aeterna
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Music for Cello Solo
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Metamorphoses
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Le tombeau de Stravinsky
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Sound Review–2 3/3
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Torrid Classics - Voluptuous Music for Passionate Nights
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