John Meijer
type: MusicGroup
popularity: 3
followers: 207
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0dd6a52ab15530518305711b098a6fde53d3ac1ae399ff586bca5dd9236d4c2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df03ce8c-fe8d-48ff-9d81-10cce965ae1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df03ce8c-fe8d-48ff-9d81-10cce965ae1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/df03ce8c-fe8d-48ff-9d81-10cce965ae1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0dd6a52ab15530518305711b098a6fde53d3ac1ae399ff586bca5dd9236d4c2c","name":"John Meijer","registered_at":"2026-06-21T05:50:11Z","symbol":"NIM1838974","token_address":"0x46a8d6edd87bca7c02734b1dc4c63115cd8bb510","type":"artist","uuid":"df03ce8c-fe8d-48ff-9d81-10cce965ae1a"}
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 0x0dd6a52ab15530518305711b098a6fde53d3ac1ae399ff586bca5dd9236d4c2c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df03ce8c-fe8d-48ff-9d81-10cce965ae1a.json and https://artists.proofprofile.net/proofs/artist/df03ce8c-fe8d-48ff-9d81-10cce965ae1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x0dd6a52ab15530518305711b098a6fde53d3ac1ae399ff586bca5dd9236d4c2c","name":"John Meijer","registered_at":"2026-06-21T05:50:11Z","symbol":"NIM1838974","token_address":"0x46a8d6edd87bca7c02734b1dc4c63115cd8bb510","type":"artist","uuid":"df03ce8c-fe8d-48ff-9d81-10cce965ae1a"}
album: Trek Aan De Bel
  type: MusicAlbum
  date published: 2007
album: Trek Aan De Bel
  type: MusicAlbum
  date published: 2007
album: Lekker en Gezellig
  type: MusicAlbum
  date published: 2007-11-02
  track: Achter Op De Slee
    type: MusicRecording
    duration: PT3M1S
    duration ms: 181826
    explicit: false
    by artist: John Meijer
    in album: Lekker en Gezellig
      type: MusicAlbum
      date published: 2007-11-02
    isrc code: NLE870788107
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:44:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x59b0893efa359f8a5ffae05323d525bc5e343f529cbf5f707e82bf564fda8c8e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE870788107
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x59b0893efa359f8a5ffae05323d525bc5e343f529cbf5f707e82bf564fda8c8e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLE870788107.
      date published: 2026-07-06T06:56:49Z
    audio: Achter Op De Slee
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.971
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.642
      additional property: Energy
        type: PropertyValue
        value: 0.974
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.103
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.065
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.735
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.761
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Op de kermis
  type: MusicAlbum
  date published: 2009-06-08
album: Op de kermis
  type: MusicAlbum
  date published: 2009-06-08