John Coenen
type: MusicGroup
popularity: 5
followers: 224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8bbd824456829fb2f7bf7c25b55c702b7c5a8f3164e28785a2997b3eb6671df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9819f69e-9def-478d-9c36-053b5e152273.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9819f69e-9def-478d-9c36-053b5e152273.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9819f69e-9def-478d-9c36-053b5e152273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8bbd824456829fb2f7bf7c25b55c702b7c5a8f3164e28785a2997b3eb6671df","name":"John Coenen","registered_at":"2026-06-17T18:46:51Z","symbol":"NIM1485821","token_address":"0x90f4e2205d442aec40b7fc1a910711f0bfc12a1c","type":"artist","uuid":"9819f69e-9def-478d-9c36-053b5e152273"}
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 0xe8bbd824456829fb2f7bf7c25b55c702b7c5a8f3164e28785a2997b3eb6671df. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9819f69e-9def-478d-9c36-053b5e152273.json and https://artists.proofprofile.net/proofs/artist/9819f69e-9def-478d-9c36-053b5e152273.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xe8bbd824456829fb2f7bf7c25b55c702b7c5a8f3164e28785a2997b3eb6671df","name":"John Coenen","registered_at":"2026-06-17T18:46:51Z","symbol":"NIM1485821","token_address":"0x90f4e2205d442aec40b7fc1a910711f0bfc12a1c","type":"artist","uuid":"9819f69e-9def-478d-9c36-053b5e152273"}
album: Danse en Feeste
  type: MusicAlbum
  date published: 2015-10-05
album: Danse en Feeste
  type: MusicAlbum
  date published: 2015-10-05
album: John Coenen Presenteert
  type: MusicAlbum
  date published: 2023-03-12
  track: 't Regewurremleed
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200346
    explicit: false
    by artist: John Coenen
    in album: John Coenen Presenteert
      type: MusicAlbum
      date published: 2023-03-12
    isrc code: QZES82351326
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T23:33:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfe6e7f5d4bd4294df6f35d055d9601797ddb19c56951347737f2435d166e0e6b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959076
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959076
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82351326
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T23:41:40Z
    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 0xfe6e7f5d4bd4294df6f35d055d9601797ddb19c56951347737f2435d166e0e6b. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZES82351326.
      date published: 2026-07-21T23:41:40Z
    audio: 't Regewurremleed
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.062
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.857
      additional property: Energy
        type: PropertyValue
        value: 0.875
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.181
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.978
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.545
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major