DJ Hélder Cunha
type: MusicGroup
genre: afro house
popularity: 4
followers: 129
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42ab300aed9b4eb730afa3dda0e6ecd5abca0087f3823df3fe608777b55bc601
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x42ab300aed9b4eb730afa3dda0e6ecd5abca0087f3823df3fe608777b55bc601","name":"DJ Hélder Cunha","registered_at":"2026-06-17T12:56:12Z","symbol":"NIM1402114","token_address":"0x57b7d0e48af3b520e2e65e1ef187279c35b50eb7","type":"artist","uuid":"87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4"}
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 0x42ab300aed9b4eb730afa3dda0e6ecd5abca0087f3823df3fe608777b55bc601. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4.json and https://artists.proofprofile.net/proofs/artist/87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x42ab300aed9b4eb730afa3dda0e6ecd5abca0087f3823df3fe608777b55bc601","name":"DJ Hélder Cunha","registered_at":"2026-06-17T12:56:12Z","symbol":"NIM1402114","token_address":"0x57b7d0e48af3b520e2e65e1ef187279c35b50eb7","type":"artist","uuid":"87bf80b3-d3db-4b68-b6fc-c7729f2c6ad4"}
album: Exagerei
  type: MusicAlbum
  date published: 2019-04-04
album: Acelera
  type: MusicAlbum
  date published: 2020-03-04
album: Chernobyl
  type: MusicAlbum
  date published: 2020-06-10
album: Lucido
  type: MusicAlbum
  date published: 2020-11-04
album: Kitombo
  type: MusicAlbum
  date published: 2021-09-28
album: Liberdade
  type: MusicAlbum
  date published: 2021-12-30
album: Querem ver
  type: MusicAlbum
  date published: 2023-05-30
album: Vrum Vrum Vrum
  type: MusicAlbum
  date published: 2025-03-07
  track: Vrum Vrum Vrum
    type: MusicRecording
    duration: PT3M55S
    duration ms: 235992
    explicit: false
    by artist: DJ Hélder Cunha
    in album: Vrum Vrum Vrum
      type: MusicAlbum
      date published: 2025-03-07
    genre: afro house
    isrc code: QZHNA2538036
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T08:19:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x681cbd4ba83e6de39f7378cd648ae20efe2a92bf804e337b7092bdb71a038156
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958526
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958526
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2538036
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T09:09:53Z
    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 0x681cbd4ba83e6de39f7378cd648ae20efe2a92bf804e337b7092bdb71a038156. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZHNA2538036.
      date published: 2026-07-18T09:09:53Z
    audio: Vrum Vrum Vrum
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.037
      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: 0.806
      additional property: Energy
        type: PropertyValue
        value: 0.858
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.086
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.004
      additional property: Liveness
        type: PropertyValue
        value: 0.073
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.422
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.065
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Body Love
  type: MusicAlbum
  date published: 2025-11-05