Willemijn van der Linden
type: MusicGroup
popularity: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x645b745d235cf50dce2b8e758953f0f89dcf2231f7ee7728d4560849d12b5d6a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x645b745d235cf50dce2b8e758953f0f89dcf2231f7ee7728d4560849d12b5d6a","name":"Willemijn van der Linden","registered_at":"2026-06-15T23:12:52Z","symbol":"NIM0862118","token_address":"0x2c75c68bab4f19eaa32bd4f231a4f847f544fdfe","type":"artist","uuid":"1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c"}
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 0x645b745d235cf50dce2b8e758953f0f89dcf2231f7ee7728d4560849d12b5d6a. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c.json and https://artists.proofprofile.net/proofs/artist/1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:36:34Z
  text: {"copyright_id":"0x645b745d235cf50dce2b8e758953f0f89dcf2231f7ee7728d4560849d12b5d6a","name":"Willemijn van der Linden","registered_at":"2026-06-15T23:12:52Z","symbol":"NIM0862118","token_address":"0x2c75c68bab4f19eaa32bd4f231a4f847f544fdfe","type":"artist","uuid":"1b944e6f-40ca-4fa7-a2da-2b806d9b0b1c"}
album: Wild Bloom
  type: MusicAlbum
  date published: 2024-11-16
  track: Wild Bloom
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139000
    explicit: false
    by artist: Willemijn van der Linden
    in album: Wild Bloom
      type: MusicAlbum
      date published: 2024-11-16
    isrc code: QZVEM1815625
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T12:56:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6fbf66994e9c9f7b308858c58917b3c30c1de150fe5afd9ec868dd7e651e8363
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1815625
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:59:15Z
    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 0x6fbf66994e9c9f7b308858c58917b3c30c1de150fe5afd9ec868dd7e651e8363. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:15Z), 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/QZVEM1815625.
      date published: 2026-07-15T15:59:15Z
    audio: Wild Bloom
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 69.228
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.713
      additional property: Energy
        type: PropertyValue
        value: 0.198
      additional property: Speechiness
        type: PropertyValue
        value: 0.121
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.94
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.36
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.749
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major