Kelvin Bouwmeester
type: MusicGroup
popularity: 2
followers: 58
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46fcd837a4a5d4cd99c744a7dac6e64b51ae36a2bacd8a7ecefe01db2e534d32
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/86a4ba38-4e62-4850-85da-e0662060b1a2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86a4ba38-4e62-4850-85da-e0662060b1a2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/86a4ba38-4e62-4850-85da-e0662060b1a2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x46fcd837a4a5d4cd99c744a7dac6e64b51ae36a2bacd8a7ecefe01db2e534d32","name":"Kelvin Bouwmeester","registered_at":"2026-06-17T12:38:35Z","symbol":"NIM1397992","token_address":"0x8e798d2e29815b0a03dc479b9923f84c90237d6c","type":"artist","uuid":"86a4ba38-4e62-4850-85da-e0662060b1a2"}
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 0x46fcd837a4a5d4cd99c744a7dac6e64b51ae36a2bacd8a7ecefe01db2e534d32. 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/86a4ba38-4e62-4850-85da-e0662060b1a2.json and https://artists.proofprofile.net/proofs/artist/86a4ba38-4e62-4850-85da-e0662060b1a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x46fcd837a4a5d4cd99c744a7dac6e64b51ae36a2bacd8a7ecefe01db2e534d32","name":"Kelvin Bouwmeester","registered_at":"2026-06-17T12:38:35Z","symbol":"NIM1397992","token_address":"0x8e798d2e29815b0a03dc479b9923f84c90237d6c","type":"artist","uuid":"86a4ba38-4e62-4850-85da-e0662060b1a2"}
album: Kijk Niet Achterom
  type: MusicAlbum
  date published: 2024-05-31
album: Vriendschap voor altijd
  type: MusicAlbum
  date published: 2024-11-04
album: Laat Ze maar Gaan, Laat Ze maar Praten
  type: MusicAlbum
  date published: 2025-04-25
  track: Laat Ze maar Gaan, Laat Ze maar Praten
    type: MusicRecording
    duration: PT2M54S
    duration ms: 174345
    explicit: false
    by artist: Kelvin Bouwmeester
    in album: Laat Ze maar Gaan, Laat Ze maar Praten
      type: MusicAlbum
      date published: 2025-04-25
    isrc code: NL5TX2500001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T23:31:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcc40621041f827f11011d8d4e61b702bfbb99b7f0a107cc62b3854c8f148877e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957775
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957775
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL5TX2500001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:04:23Z
    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 0xcc40621041f827f11011d8d4e61b702bfbb99b7f0a107cc62b3854c8f148877e. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/NL5TX2500001.
      date published: 2026-07-13T00:04:23Z
    audio: Laat Ze maar Gaan, Laat Ze maar Praten
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.088
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.565
      additional property: Energy
        type: PropertyValue
        value: 0.924
      additional property: Speechiness
        type: PropertyValue
        value: 0.07
      additional property: Acousticness
        type: PropertyValue
        value: 0.01
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.043
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.698
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.457
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Kleine Annabella
  type: MusicAlbum
  date published: 2025-09-26