Erik van Os
type: MusicGroup
genre: children's music
popularity: 7
followers: 209
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x06c835544d971f42b94a9dc6fb70828b713dd67aafb56942e2e458379d080603
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d7f984c2-e719-42bd-8c7a-39e8ba441d18.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d7f984c2-e719-42bd-8c7a-39e8ba441d18.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d7f984c2-e719-42bd-8c7a-39e8ba441d18
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x06c835544d971f42b94a9dc6fb70828b713dd67aafb56942e2e458379d080603","name":"Erik van Os","registered_at":"2026-06-21T03:30:28Z","symbol":"NIM1805514","token_address":"0xe6a9513e1802836c24130f426241acd011d6e09a","type":"artist","uuid":"d7f984c2-e719-42bd-8c7a-39e8ba441d18"}
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 0x06c835544d971f42b94a9dc6fb70828b713dd67aafb56942e2e458379d080603. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7f984c2-e719-42bd-8c7a-39e8ba441d18.json and https://artists.proofprofile.net/proofs/artist/d7f984c2-e719-42bd-8c7a-39e8ba441d18.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0x06c835544d971f42b94a9dc6fb70828b713dd67aafb56942e2e458379d080603","name":"Erik van Os","registered_at":"2026-06-21T03:30:28Z","symbol":"NIM1805514","token_address":"0xe6a9513e1802836c24130f426241acd011d6e09a","type":"artist","uuid":"d7f984c2-e719-42bd-8c7a-39e8ba441d18"}
album: Ik Weet Wat Ik Worden Wil
  type: MusicAlbum
  date published: 2016-12-07
  track: Brandweerman
    type: MusicRecording
    duration: PT1M12S
    duration ms: 72000
    explicit: false
    by artist: Erik van Os
    in album: Ik Weet Wat Ik Worden Wil
      type: MusicAlbum
      date published: 2016-12-07
    genre: children's music
    isrc code: NLW2R1718935
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T05:40:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd449e37b6c821709b9a87cb7e6638de95efb0bcd29cadfe13f3c74128666e14c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958246
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958246
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R1718935
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T05:55:09Z
    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 0xd449e37b6c821709b9a87cb7e6638de95efb0bcd29cadfe13f3c74128666e14c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R1718935 — a six-check JSON result.
      date published: 2026-07-16T05:55:09Z
    audio: Brandweerman
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 149.73
      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: 0.615
      additional property: Energy
        type: PropertyValue
        value: 0.289
      additional property: Speechiness
        type: PropertyValue
        value: 0.069
      additional property: Acousticness
        type: PropertyValue
        value: 0.693
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.155
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.454
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.357
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ik Weet Wat Ik Worden Wil
  type: MusicAlbum
  date published: 2016-12-07
album: Haren vol banaan (Vieze Liedjes)
  type: MusicAlbum
  date published: 2019-01-18
album: Haren vol banaan (Stoute Versjes)
  type: MusicAlbum
  date published: 2019-01-18
album: Had ik maar leuke kinderen
  type: MusicAlbum
  date published: 2019-09-13
album: Applaus voor mijn vinger
  type: MusicAlbum
  date published: 2022-04-01