Valentin Nesterov
type: MusicGroup
genre: classical
popularity: 8
followers: 47
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x8bdeddc94b71bd0b9be1d572a18516edb77c4c8148eadc16fa19cc48fd36559e
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d4a742d-ef35-4571-b1f9-d4a79babfcaf.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/9d4a742d-ef35-4571-b1f9-d4a79babfcaf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9d4a742d-ef35-4571-b1f9-d4a79babfcaf
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdeddc94b71bd0b9be1d572a18516edb77c4c8148eadc16fa19cc48fd36559e. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d4a742d-ef35-4571-b1f9-d4a79babfcaf.json and https://artists.proofprofile.net/proofs/artist/9d4a742d-ef35-4571-b1f9-d4a79babfcaf.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x8bdeddc94b71bd0b9be1d572a18516edb77c4c8148eadc16fa19cc48fd36559e","name":"Valentin Nesterov","registered_at":"2026-06-20T04:05:17Z","symbol":"NIM1510187","token_address":"0x0923384897cc058186496bb62e1ec9c6c904e04f","type":"artist","uuid":"9d4a742d-ef35-4571-b1f9-d4a79babfcaf"}
album: C. Monteverdi - G. de Machaut - B. Britten
  type: MusicAlbum
  date published: 2016-02-01
album: C. Monteverdi - G. de Machaut - B. Britten
  type: MusicAlbum
  date published: 2016-02-01
track: L'estro armonico, Op. 3 - Concerto No. 8 in A Minor for Two Violins and Strings, RV 522: I. Allegro
  type: MusicRecording
  duration: PT4M17S
  duration ms: 257079
  explicit: false
  by artist: The St. Petersburg Soloists
  by artist: Michail Gantvarg
  by artist: Valentin Nesterov
  in album: Vivaldi
    type: MusicAlbum
    date published: 2011-01-17
  isrc code: DEB790401205
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    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/DEB790401205
  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 0xf77731859d72d91ca8b0d7e0c8030d665fa9c7f9cdab39b4056941fa17c28c12. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790401205 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: L'estro armonico, Op. 3 - Concerto No. 8 in A Minor for Two Violins and Strings, RV 522: I. Allegro
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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      value: 9
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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      value: 5
    additional property: Danceability
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
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      value: 0.059
    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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      value: -19.216
    additional property: Key Name
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      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor