Jeffrey Stappers
type: MusicGroup
popularity: 7
followers: 160
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f9097840fc0339209e91d9374c9eef1f0462ae0bf50c641a88a9ef0696e9eec
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/99d8ea71-a222-4395-a754-b462ad5cdcd3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99d8ea71-a222-4395-a754-b462ad5cdcd3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/99d8ea71-a222-4395-a754-b462ad5cdcd3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2f9097840fc0339209e91d9374c9eef1f0462ae0bf50c641a88a9ef0696e9eec","name":"Jeffrey Stappers","registered_at":"2026-06-17T19:22:17Z","symbol":"NIM1494275","token_address":"0xc41f08d778e14441b3a5fa1617e17a39836b6bd9","type":"artist","uuid":"99d8ea71-a222-4395-a754-b462ad5cdcd3"}
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 0x2f9097840fc0339209e91d9374c9eef1f0462ae0bf50c641a88a9ef0696e9eec. 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/99d8ea71-a222-4395-a754-b462ad5cdcd3.json and https://artists.proofprofile.net/proofs/artist/99d8ea71-a222-4395-a754-b462ad5cdcd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x2f9097840fc0339209e91d9374c9eef1f0462ae0bf50c641a88a9ef0696e9eec","name":"Jeffrey Stappers","registered_at":"2026-06-17T19:22:17Z","symbol":"NIM1494275","token_address":"0xc41f08d778e14441b3a5fa1617e17a39836b6bd9","type":"artist","uuid":"99d8ea71-a222-4395-a754-b462ad5cdcd3"}
album: Perompompom
  type: MusicAlbum
  date published: 2017-09-15
album: Perompompom
  type: MusicAlbum
  date published: 2017-09-15
album: Donder maar op
  type: MusicAlbum
  date published: 2020-01-16
album: Donder maar op
  type: MusicAlbum
  date published: 2020-01-16
album: Het maakt mij niets meer uit
  type: MusicAlbum
  date published: 2021-12-29
  track: Het maakt mij niets meer uit
    type: MusicRecording
    duration: PT3M10S
    duration ms: 190067
    explicit: false
    by artist: Jeffrey Stappers
    in album: Het maakt mij niets meer uit
      type: MusicAlbum
      date published: 2021-12-29
    isrc code: NLX092100182
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T23:40:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x125eb2af0ebfde75427809a06f9e160174fa6587f9a1f55cf30be5ed7c07a688
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957774
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957774
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLX092100182
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:51:20Z
    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 0x125eb2af0ebfde75427809a06f9e160174fa6587f9a1f55cf30be5ed7c07a688. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/NLX092100182.
      date published: 2026-07-12T23:51:20Z
    audio: Het maakt mij niets meer uit
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.021
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.466
      additional property: Energy
        type: PropertyValue
        value: 0.937
      additional property: Speechiness
        type: PropertyValue
        value: 0.114
      additional property: Acousticness
        type: PropertyValue
        value: 0.118
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.171
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.303
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.155
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Emilie
  type: MusicAlbum
  date published: 2022-09-07