Bertrie Wierenga
type: MusicGroup
genre: nederpop
popularity: 14
followers: 1139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x385d779fc7ca6151df38e83d477ba9878847132680d65569c5938d33b68320bb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953670
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953670
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/582e0ebf-8876-4a46-b560-16d5bd833afc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/582e0ebf-8876-4a46-b560-16d5bd833afc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/582e0ebf-8876-4a46-b560-16d5bd833afc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T18:07:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x385d779fc7ca6151df38e83d477ba9878847132680d65569c5938d33b68320bb","name":"Bertrie Wierenga","registered_at":"2026-06-14T13:44:28Z","symbol":"NIM0471156","token_address":"0xce811fa5084f2661f06660c860d032ff5dec2add","type":"artist","uuid":"582e0ebf-8876-4a46-b560-16d5bd833afc"}
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 0x385d779fc7ca6151df38e83d477ba9878847132680d65569c5938d33b68320bb. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/582e0ebf-8876-4a46-b560-16d5bd833afc.json and https://artists.proofprofile.net/proofs/artist/582e0ebf-8876-4a46-b560-16d5bd833afc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T18:07:12Z
  text: {"copyright_id":"0x385d779fc7ca6151df38e83d477ba9878847132680d65569c5938d33b68320bb","name":"Bertrie Wierenga","registered_at":"2026-06-14T13:44:28Z","symbol":"NIM0471156","token_address":"0xce811fa5084f2661f06660c860d032ff5dec2add","type":"artist","uuid":"582e0ebf-8876-4a46-b560-16d5bd833afc"}
album: Ooit Kom Ik Thuis
  type: MusicAlbum
  date published: 2023-09-04
  track: Ooit Kom Ik Thuis
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188212
    explicit: false
    by artist: Bertrie Wierenga
    in album: Ooit Kom Ik Thuis
      type: MusicAlbum
      date published: 2023-09-04
    genre: nederpop
    isrc code: NLE612100094
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T07:33:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaf7d8b6db91be82d64411311095e0394ff96280f209e8b7b875a257e15af72af
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958383
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958383
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE612100094
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:20:01Z
    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 0xaf7d8b6db91be82d64411311095e0394ff96280f209e8b7b875a257e15af72af. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLE612100094.
      date published: 2026-07-17T08:20:01Z
    audio: Ooit Kom Ik Thuis
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.05
      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: 0.564
      additional property: Energy
        type: PropertyValue
        value: 0.38
      additional property: Speechiness
        type: PropertyValue
        value: 0.025
      additional property: Acousticness
        type: PropertyValue
        value: 0.706
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.469
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.347
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.031
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ooit Kom Ik Thuis
  type: MusicAlbum
  date published: 2023-09-04