Nikola Chen
type: MusicGroup
genre: acid techno
popularity: 21
followers: 1389
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x029aca5d334e88fa2fd43391ea367392d3e5b3914f9b66fe6a13186c8d4edcc8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ebd125d-f79c-47a7-aae8-fe1d9263e315.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ebd125d-f79c-47a7-aae8-fe1d9263e315.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7ebd125d-f79c-47a7-aae8-fe1d9263e315
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x029aca5d334e88fa2fd43391ea367392d3e5b3914f9b66fe6a13186c8d4edcc8","name":"Nikola Chen","registered_at":"2026-06-12T02:54:05Z","symbol":"NIM0165154","token_address":"0x839151aad9ee8ef4fe68cf7d167d44432af9545b","type":"artist","uuid":"7ebd125d-f79c-47a7-aae8-fe1d9263e315"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029aca5d334e88fa2fd43391ea367392d3e5b3914f9b66fe6a13186c8d4edcc8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ebd125d-f79c-47a7-aae8-fe1d9263e315.json and https://artists.proofprofile.net/proofs/artist/7ebd125d-f79c-47a7-aae8-fe1d9263e315.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x029aca5d334e88fa2fd43391ea367392d3e5b3914f9b66fe6a13186c8d4edcc8","name":"Nikola Chen","registered_at":"2026-06-12T02:54:05Z","symbol":"NIM0165154","token_address":"0x839151aad9ee8ef4fe68cf7d167d44432af9545b","type":"artist","uuid":"7ebd125d-f79c-47a7-aae8-fe1d9263e315"}
album: +/-
  type: MusicAlbum
  date published: 2019-11-28
album: +/-
  type: MusicAlbum
  date published: 2019-11-28
album: +/-
  type: MusicAlbum
  date published: 2019-11-28
album: Shēq
  type: MusicAlbum
  date published: 2020-06-14
album: Shēq
  type: MusicAlbum
  date published: 2020-06-14
album: Shēq
  type: MusicAlbum
  date published: 2020-06-14
  track: Poroshēq
    type: MusicRecording
    duration: PT3M32S
    duration ms: 212519
    explicit: false
    by artist: Nikola Chen
    in album: Shēq
      type: MusicAlbum
      date published: 2020-06-14
    genre: acid techno
    isrc code: QZHZ42032400
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T04:20:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x547563b0c2fca3ef7cc58297bc4b9708aa8dbd2aef0f0de6df4f32a6a957982f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959100
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959100
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ42032400
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T05:29:55Z
    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 0x547563b0c2fca3ef7cc58297bc4b9708aa8dbd2aef0f0de6df4f32a6a957982f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZHZ42032400 — a six-check JSON result.
      date published: 2026-07-22T05:29:55Z
    audio: Poroshēq
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.971
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.675
      additional property: Energy
        type: PropertyValue
        value: 0.755
      additional property: Speechiness
        type: PropertyValue
        value: 0.113
      additional property: Acousticness
        type: PropertyValue
        value: 0.193
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.07
      additional property: Liveness
        type: PropertyValue
        value: 0.142
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.226
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.93
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Balisong
  type: MusicAlbum
  date published: 2022-05-02
album: Балбеска
  type: MusicAlbum
  date published: 2023-06-14
album: Балбеска
  type: MusicAlbum
  date published: 2023-06-14