Laurits Bertelsen
type: MusicGroup
genre: lullaby
popularity: 21
followers: 124
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7f3b0a232c6d2cc40ce4a30a3836b9c9598bdb2a47672c8ec238b4d8f2de51e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70b1b68c-c64f-42e1-9530-b3616f6190d3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70b1b68c-c64f-42e1-9530-b3616f6190d3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/70b1b68c-c64f-42e1-9530-b3616f6190d3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd7f3b0a232c6d2cc40ce4a30a3836b9c9598bdb2a47672c8ec238b4d8f2de51e","name":"Laurits Bertelsen","registered_at":"2026-06-12T00:39:36Z","symbol":"NIM0144953","token_address":"0xe01024f8b8cec68488d02429ed1dda232c8715cc","type":"artist","uuid":"70b1b68c-c64f-42e1-9530-b3616f6190d3"}
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 0xd7f3b0a232c6d2cc40ce4a30a3836b9c9598bdb2a47672c8ec238b4d8f2de51e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70b1b68c-c64f-42e1-9530-b3616f6190d3.json and https://artists.proofprofile.net/proofs/artist/70b1b68c-c64f-42e1-9530-b3616f6190d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xd7f3b0a232c6d2cc40ce4a30a3836b9c9598bdb2a47672c8ec238b4d8f2de51e","name":"Laurits Bertelsen","registered_at":"2026-06-12T00:39:36Z","symbol":"NIM0144953","token_address":"0xe01024f8b8cec68488d02429ed1dda232c8715cc","type":"artist","uuid":"70b1b68c-c64f-42e1-9530-b3616f6190d3"}
album: Old MacDonald had a farm
  type: MusicAlbum
  date published: 2020-03-06
  track: Old MacDonald had a farm
    type: MusicRecording
    duration: PT1M2S
    duration ms: 62000
    explicit: false
    by artist: Laurits Bertelsen
    in album: Old MacDonald had a farm
      type: MusicAlbum
      date published: 2020-03-06
    genre: lullaby
    isrc code: SE5W32048701
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T12:06:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8da9a3cfe713b8b91febd2c77ba6036712cfaf4583fc7a6ec436d9df975ec3b2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958410
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958410
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5W32048701
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T12:18:07Z
    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 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 0x8da9a3cfe713b8b91febd2c77ba6036712cfaf4583fc7a6ec436d9df975ec3b2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/SE5W32048701.
      date published: 2026-07-17T12:18:07Z
    audio: Old MacDonald had a farm
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 72.091
      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: 0.332
      additional property: Energy
        type: PropertyValue
        value: 0.148
      additional property: Speechiness
        type: PropertyValue
        value: 0.117
      additional property: Acousticness
        type: PropertyValue
        value: 0.982
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.349
      additional property: Liveness
        type: PropertyValue
        value: 0.295
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.723
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.95
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: O Tannenbaum
  type: MusicAlbum
  date published: 2021-10-08