Valentin Nesterov
type: MusicGroup
genre: classical
popularity: 8
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8bdeddc94b71bd0b9be1d572a18516edb77c4c8148eadc16fa19cc48fd36559e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
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
  type: PropertyValue
  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
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"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"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  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, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  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

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
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:16:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf77731859d72d91ca8b0d7e0c8030d665fa9c7f9cdab39b4056941fa17c28c12
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/DEB790401205
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+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: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+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 0xf77731859d72d91ca8b0d7e0c8030d665fa9c7f9cdab39b4056941fa17c28c12. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB790401205.
  date published: 2026-07-08T08:56:20Z
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)
    type: PropertyValue
    value: 171.644
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.343
  additional property: Energy
    type: PropertyValue
    value: 0.179
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.346
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.216
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor