Arnoud van der Werf
type: MusicGroup
genre: trance
popularity: 3
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0078ae3476611fbeb65c3f57399eed83236b9f6f8edbd405a926a075fa741530
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/113086f1-f285-499f-858f-407ffeb302fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/113086f1-f285-499f-858f-407ffeb302fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/113086f1-f285-499f-858f-407ffeb302fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0078ae3476611fbeb65c3f57399eed83236b9f6f8edbd405a926a075fa741530","name":"Arnoud van der Werf","registered_at":"2026-06-15T19:33:28Z","symbol":"NIM0809790","token_address":"0x9264fe7bc95efc892a726ab6b3f930229a52b6fa","type":"artist","uuid":"113086f1-f285-499f-858f-407ffeb302fb"}
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 0x0078ae3476611fbeb65c3f57399eed83236b9f6f8edbd405a926a075fa741530. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/113086f1-f285-499f-858f-407ffeb302fb.json and https://artists.proofprofile.net/proofs/artist/113086f1-f285-499f-858f-407ffeb302fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x0078ae3476611fbeb65c3f57399eed83236b9f6f8edbd405a926a075fa741530","name":"Arnoud van der Werf","registered_at":"2026-06-15T19:33:28Z","symbol":"NIM0809790","token_address":"0x9264fe7bc95efc892a726ab6b3f930229a52b6fa","type":"artist","uuid":"113086f1-f285-499f-858f-407ffeb302fb"}
album: Taiga
  type: MusicAlbum
  date published: 2014-10-13
album: Taiga
  type: MusicAlbum
  date published: 2014-10-13
album: Taiga
  type: MusicAlbum
  date published: 2014-10-13
album: RNM Sessions Chapter 04 - Uplifting Trance with Arnoud van der Werf
  type: MusicAlbum
  date published: 2016-10-07
album: RNM Sessions: Arnoud van der Werf (Chapter 04)
  type: MusicAlbum
  date published: 2016-10-07
album: Nostalgia
  type: MusicAlbum
  date published: 2016-10-10
album: Nostalgia
  type: MusicAlbum
  date published: 2016-10-24
  track: Nostalgia - Original Mix
    type: MusicRecording
    duration: PT7M32S
    duration ms: 452589
    explicit: false
    by artist: Arnoud van der Werf
    in album: Nostalgia
      type: MusicAlbum
      date published: 2016-10-24
    genre: trance
    isrc code: NLC731600358
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:59:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbd5a58a7d9a7c9857c9f08adf2d22d8f3b1a159705b2b1db0e45ccd6865d5ba8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC731600358
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xbd5a58a7d9a7c9857c9f08adf2d22d8f3b1a159705b2b1db0e45ccd6865d5ba8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLC731600358.
      date published: 2026-07-05T10:01:46Z
    audio: Nostalgia - Original Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.011
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.45
      additional property: Energy
        type: PropertyValue
        value: 0.981
      additional property: Speechiness
        type: PropertyValue
        value: 0.078
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.924
      additional property: Liveness
        type: PropertyValue
        value: 0.627
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.529
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.008
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Metamorphosis
  type: MusicAlbum
  date published: 2023-06-16