Katrien Verheijden
type: MusicGroup
popularity: 3
followers: 126
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff55f4af027596841b631d1add2df0bf191a77eb850aa95b8d7f747c94ff7497
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xff55f4af027596841b631d1add2df0bf191a77eb850aa95b8d7f747c94ff7497","name":"Katrien Verheijden","registered_at":"2026-06-16T21:06:13Z","symbol":"NIM1175614","token_address":"0xffb427b159860a5e0753755cd90cd24e9546f8d1","type":"artist","uuid":"5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b"}
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 0xff55f4af027596841b631d1add2df0bf191a77eb850aa95b8d7f747c94ff7497. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b.json and https://artists.proofprofile.net/proofs/artist/5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xff55f4af027596841b631d1add2df0bf191a77eb850aa95b8d7f747c94ff7497","name":"Katrien Verheijden","registered_at":"2026-06-16T21:06:13Z","symbol":"NIM1175614","token_address":"0xffb427b159860a5e0753755cd90cd24e9546f8d1","type":"artist","uuid":"5a0cac4e-b5e9-45f5-a3b4-dffed1e2794b"}
album: Zeventien
  type: MusicAlbum
  date published: 2018-05-25
album: Echo's In Mijn Hoofd: Katrien Verheijden Zingt Janis Ian
  type: MusicAlbum
  date published: 2018-06-01
  track: I'm Still Standing
    type: MusicRecording
    duration: PT3M39S
    duration ms: 219693
    explicit: false
    by artist: Katrien Verheijden
    in album: Echo's In Mijn Hoofd: Katrien Verheijden Zingt Janis Ian
      type: MusicAlbum
      date published: 2018-06-01
    isrc code: NLY2L1800006
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T16:17:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x14282bb9c6e623bebe665a7fe80c9dd559f02388642963fc34d07d5d1a911cff
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958579
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958579
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY2L1800006
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T16:26:17Z
    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 0x14282bb9c6e623bebe665a7fe80c9dd559f02388642963fc34d07d5d1a911cff. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/NLY2L1800006.
      date published: 2026-07-18T16:26:17Z
    audio: I'm Still Standing
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.989
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.624
      additional property: Energy
        type: PropertyValue
        value: 0.214
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.894
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.38
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.635
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Echo's In Mijn Hoofd - Katrien Verheijden Zingt Janis Ian
  type: MusicAlbum
  date published: 2018-06-01
album: I'm Still Standing
  type: MusicAlbum
  date published: 2018-09-28
album: I'm Still Standing
  type: MusicAlbum
  date published: 2018-09-28
album: Through The Years
  type: MusicAlbum
  date published: 2019-02-13
album: Through the Years
  type: MusicAlbum
  date published: 2019-02-13