IVAN VAN HOUTEN
type: MusicGroup
popularity: 2
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0586345f1498db9db82c634be13fdc6edfb80fb9878c7dead7c27ceba05707d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdfc44b8-a8b3-4442-b3b2-d374e5b8109e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdfc44b8-a8b3-4442-b3b2-d374e5b8109e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdfc44b8-a8b3-4442-b3b2-d374e5b8109e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0586345f1498db9db82c634be13fdc6edfb80fb9878c7dead7c27ceba05707d9","name":"IVAN VAN HOUTEN","registered_at":"2026-06-21T18:08:28Z","symbol":"NIM1996496","token_address":"0xd80ed7b5d5721055e202436c3fd1ef820ba26ea6","type":"artist","uuid":"fdfc44b8-a8b3-4442-b3b2-d374e5b8109e"}
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 0x0586345f1498db9db82c634be13fdc6edfb80fb9878c7dead7c27ceba05707d9. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdfc44b8-a8b3-4442-b3b2-d374e5b8109e.json and https://artists.proofprofile.net/proofs/artist/fdfc44b8-a8b3-4442-b3b2-d374e5b8109e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x0586345f1498db9db82c634be13fdc6edfb80fb9878c7dead7c27ceba05707d9","name":"IVAN VAN HOUTEN","registered_at":"2026-06-21T18:08:28Z","symbol":"NIM1996496","token_address":"0xd80ed7b5d5721055e202436c3fd1ef820ba26ea6","type":"artist","uuid":"fdfc44b8-a8b3-4442-b3b2-d374e5b8109e"}
album: NAKKU RI AMMA
  type: MusicAlbum
  date published: 2023-07-04
  track: NAKKU RI AMMA
    type: MusicRecording
    duration: PT5M23S
    duration ms: 323750
    explicit: false
    by artist: IVAN VAN HOUTEN
    in album: NAKKU RI AMMA
      type: MusicAlbum
      date published: 2023-07-04
    isrc code: QZZ972317311
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T09:04:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3817ee901a90f54ae0fa49dde0eb7711c6077c89feb379e1b8dffc5a76d7da94
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ972317311
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T12:05:14Z
    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 0x3817ee901a90f54ae0fa49dde0eb7711c6077c89feb379e1b8dffc5a76d7da94. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:14Z), 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/QZZ972317311.
      date published: 2026-07-20T12:05:14Z
    audio: NAKKU RI AMMA
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.963
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.446
      additional property: Energy
        type: PropertyValue
        value: 0.423
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.312
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.082
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.218
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.36
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major