Yochen & Lars
type: MusicGroup
popularity: 5
followers: 103
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc901bed42a4360d4a7eb9a76b399ec93ad36e74350cec6c2f303cb0b42a6906c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8c30b53-3b70-4527-9092-d267644afc64.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8c30b53-3b70-4527-9092-d267644afc64.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b8c30b53-3b70-4527-9092-d267644afc64
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc901bed42a4360d4a7eb9a76b399ec93ad36e74350cec6c2f303cb0b42a6906c","name":"Yochen & Lars","registered_at":"2026-06-20T16:03:24Z","symbol":"NIM1649792","token_address":"0xe0eea7d0c736dd35bb546506ae3361135f3fcd1f","type":"artist","uuid":"b8c30b53-3b70-4527-9092-d267644afc64"}
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 0xc901bed42a4360d4a7eb9a76b399ec93ad36e74350cec6c2f303cb0b42a6906c. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8c30b53-3b70-4527-9092-d267644afc64.json and https://artists.proofprofile.net/proofs/artist/b8c30b53-3b70-4527-9092-d267644afc64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
  text: {"copyright_id":"0xc901bed42a4360d4a7eb9a76b399ec93ad36e74350cec6c2f303cb0b42a6906c","name":"Yochen & Lars","registered_at":"2026-06-20T16:03:24Z","symbol":"NIM1649792","token_address":"0xe0eea7d0c736dd35bb546506ae3361135f3fcd1f","type":"artist","uuid":"b8c30b53-3b70-4527-9092-d267644afc64"}
album: Tapijt
  type: MusicAlbum
  date published: 2023-06-06
album: olijf & wijn
  type: MusicAlbum
  date published: 2024-01-26
album: een veldmuziek collectie
  type: MusicAlbum
  date published: 2024-08-24
album: Dauw
  type: MusicAlbum
  date published: 2025-01-04
  track: Dauw
    type: MusicRecording
    duration: PT4M45S
    duration ms: 285232
    explicit: false
    by artist: Yochen & Lars
    in album: Dauw
      type: MusicAlbum
      date published: 2025-01-04
    isrc code: QZFYY2532771
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T18:15:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb2b95f9c33403b1415a11856edc7399a9705b921de66c7bafd62049250274d30
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2532771
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xb2b95f9c33403b1415a11856edc7399a9705b921de66c7bafd62049250274d30. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYY2532771.
      date published: 2026-07-05T01:12:41Z
    audio: Dauw
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.045
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.532
      additional property: Energy
        type: PropertyValue
        value: 0.426
      additional property: Speechiness
        type: PropertyValue
        value: 0.099
      additional property: Acousticness
        type: PropertyValue
        value: 0.21
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.755
      additional property: Liveness
        type: PropertyValue
        value: 0.303
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.287
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.631
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major