IJ Is Er Ien Van
type: MusicGroup
popularity: 3
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5225e9c6bca6d45817da7ea3b5c73decc16f3540b6e54b8eb83f024b1e212dd2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d1bde103-6f37-46ae-9341-12182ff09efa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d1bde103-6f37-46ae-9341-12182ff09efa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d1bde103-6f37-46ae-9341-12182ff09efa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5225e9c6bca6d45817da7ea3b5c73decc16f3540b6e54b8eb83f024b1e212dd2","name":"IJ Is Er Ien Van","registered_at":"2026-06-21T01:11:50Z","symbol":"NIM1772863","token_address":"0xf28eebf9dec24e368b0d9118455caf6b02a9bae1","type":"artist","uuid":"d1bde103-6f37-46ae-9341-12182ff09efa"}
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 0x5225e9c6bca6d45817da7ea3b5c73decc16f3540b6e54b8eb83f024b1e212dd2. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1bde103-6f37-46ae-9341-12182ff09efa.json and https://artists.proofprofile.net/proofs/artist/d1bde103-6f37-46ae-9341-12182ff09efa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x5225e9c6bca6d45817da7ea3b5c73decc16f3540b6e54b8eb83f024b1e212dd2","name":"IJ Is Er Ien Van","registered_at":"2026-06-21T01:11:50Z","symbol":"NIM1772863","token_address":"0xf28eebf9dec24e368b0d9118455caf6b02a9bae1","type":"artist","uuid":"d1bde103-6f37-46ae-9341-12182ff09efa"}
album: Op In Achter De Dehk
  type: MusicAlbum
  date published: 2020-08-05
  track: Op In Achter De Dehk
    type: MusicRecording
    duration: PT2M51S
    duration ms: 171429
    explicit: false
    by artist: IJ Is Er Ien Van
    in album: Op In Achter De Dehk
      type: MusicAlbum
      date published: 2020-08-05
    isrc code: NLL052000051
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T07:03:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe8d2af6564129294352fe648b693bf0b53ab52dddeb271c1e4ed5696392e43d7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959109
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959109
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLL052000051
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T10:06:07Z
    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 0xe8d2af6564129294352fe648b693bf0b53ab52dddeb271c1e4ed5696392e43d7. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:06:07Z), 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/NLL052000051.
      date published: 2026-07-22T10:06:07Z
    audio: Op In Achter De Dehk
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.957
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.609
      additional property: Energy
        type: PropertyValue
        value: 0.793
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.267
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.359
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.807
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.247
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Doad Op Behd
  type: MusicAlbum
  date published: 2021-07-11
album: Links Rechts Volledam
  type: MusicAlbum
  date published: 2022-07-03
album: 't Schouw
  type: MusicAlbum
  date published: 2023-07-15