Petr Elfimov
type: MusicGroup
description: Petr Petrovich Elfimov (, Pyotr Yelfimaŭ; born 15 February 1980) is a Belarusian singer, musician, songwriter and arranger, music producer, actor. He holds a title of Master of Art Criticism and serve
popularity: 3
followers: 528
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb2d73de7c617e24cd69239aced0b7a080fd2b4f70f4202303060a040d00bc51
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c95a63a9-8622-4762-8971-a8f3800b5b46.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c95a63a9-8622-4762-8971-a8f3800b5b46.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c95a63a9-8622-4762-8971-a8f3800b5b46
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdb2d73de7c617e24cd69239aced0b7a080fd2b4f70f4202303060a040d00bc51","name":"Petr Elfimov","registered_at":"2026-06-20T22:23:39Z","symbol":"NIM1731403","token_address":"0x954ff8bdf2cc0f45aa7c0ceba116334f27de9d95","type":"artist","uuid":"c95a63a9-8622-4762-8971-a8f3800b5b46"}
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 0xdb2d73de7c617e24cd69239aced0b7a080fd2b4f70f4202303060a040d00bc51. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c95a63a9-8622-4762-8971-a8f3800b5b46.json and https://artists.proofprofile.net/proofs/artist/c95a63a9-8622-4762-8971-a8f3800b5b46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xdb2d73de7c617e24cd69239aced0b7a080fd2b4f70f4202303060a040d00bc51","name":"Petr Elfimov","registered_at":"2026-06-20T22:23:39Z","symbol":"NIM1731403","token_address":"0x954ff8bdf2cc0f45aa7c0ceba116334f27de9d95","type":"artist","uuid":"c95a63a9-8622-4762-8971-a8f3800b5b46"}
album: Eyes That Never Lie (Eurovision 2009)
  type: MusicAlbum
  date published: 2009-01-01
album: Eyes That Never Lie
  type: MusicAlbum
  date published: 2009-03-01
  track: Eyes That Never Lie
    type: MusicRecording
    duration: PT3M0S
    duration ms: 180800
    explicit: false
    by artist: Petr Elfimov
    in album: Eyes That Never Lie
      type: MusicAlbum
      date published: 2009-03-01
    isrc code: RUA1H2098663
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T22:16:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd16d6f446224789ed7f85468a5da0fedce6f9a22a6e74dc967094e4baf1682e6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2098663
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16d6f446224789ed7f85468a5da0fedce6f9a22a6e74dc967094e4baf1682e6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1H2098663.
      date published: 2026-07-05T01:12:41Z
    audio: Eyes That Never Lie
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.85
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.389
      additional property: Energy
        type: PropertyValue
        value: 0.902
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.004
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.342
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.256
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.951
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor