J. T. Boogaard
type: MusicGroup
genre: ambient
genre: drone
popularity: 6
followers: 144
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf440febbbdc522990375e85b7a28e3bce5e366ab46f726c5d19feb23c58f0c17
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf440febbbdc522990375e85b7a28e3bce5e366ab46f726c5d19feb23c58f0c17","name":"J. T. Boogaard","registered_at":"2026-06-20T20:25:10Z","symbol":"NIM1705590","token_address":"0xbb4056319c6bc91704a430f0c1c11db564febe5d","type":"artist","uuid":"c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97"}
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 0xf440febbbdc522990375e85b7a28e3bce5e366ab46f726c5d19feb23c58f0c17. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97.json and https://artists.proofprofile.net/proofs/artist/c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xf440febbbdc522990375e85b7a28e3bce5e366ab46f726c5d19feb23c58f0c17","name":"J. T. Boogaard","registered_at":"2026-06-20T20:25:10Z","symbol":"NIM1705590","token_address":"0xbb4056319c6bc91704a430f0c1c11db564febe5d","type":"artist","uuid":"c487b9c2-a7b5-444d-8c6a-e78d4a6b4b97"}
album: Place
  type: MusicAlbum
  date published: 2020-01-08
album: big cloud
  type: MusicAlbum
  date published: 2020-05-10
album: Repetition
  type: MusicAlbum
  date published: 2020-06-15
album: de vogels van Rotterdam
  type: MusicAlbum
  date published: 2020-07-06
album: Veluwe
  type: MusicAlbum
  date published: 2020-08-07
album: Veluwe II
  type: MusicAlbum
  date published: 2020-08-12
album: distant traffic
  type: MusicAlbum
  date published: 2020-10-25
album: PLACE
  type: MusicAlbum
  date published: 2021-01-08
album: Collected work 2020
  type: MusicAlbum
  date published: 2021-07-16
album: Singing Lake
  type: MusicAlbum
  date published: 2022-09-23
album: Maple Fire & Singing Lake
  type: MusicAlbum
  date published: 2022-10-07
album: Vijver
  type: MusicAlbum
  date published: 2024-11-12
album: PLACE II
  type: MusicAlbum
  date published: 2024-11-22
  track: Katzwijm Piano
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157000
    explicit: false
    by artist: J. T. Boogaard
    in album: PLACE II
      type: MusicAlbum
      date published: 2024-11-22
    genre: ambient
    genre: drone
    isrc code: QZZ7L2453522
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7673c6102d6d4353b052aa98a7bdf5dd5d41d995cf414652bf24ba841abb2969
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 956430
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956430
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2453522
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T02:22:42Z
    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 0x7673c6102d6d4353b052aa98a7bdf5dd5d41d995cf414652bf24ba841abb2969. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZZ7L2453522.
      date published: 2026-07-03T02:22:42Z
    audio: Katzwijm Piano
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 66.431
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.201
      additional property: Energy
        type: PropertyValue
        value: 0.016
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.976
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.951
      additional property: Liveness
        type: PropertyValue
        value: 0.135
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.039
      additional property: Loudness (dB)
        type: PropertyValue
        value: -27.658
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor