Large Lars
type: MusicGroup
popularity: 4
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf98fbe845d76c3970eedf40ca7b82a474b8fe7d1b8a4925cadd0a10701a35d0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c50a7234-0fc8-409b-bab6-92dd2b70e07a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c50a7234-0fc8-409b-bab6-92dd2b70e07a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c50a7234-0fc8-409b-bab6-92dd2b70e07a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcf98fbe845d76c3970eedf40ca7b82a474b8fe7d1b8a4925cadd0a10701a35d0","name":"Large Lars","registered_at":"2026-06-20T20:47:46Z","symbol":"NIM1711307","token_address":"0xffcf03662ba53fb784605d6f69a55f0b0a69a01e","type":"artist","uuid":"c50a7234-0fc8-409b-bab6-92dd2b70e07a"}
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 0xcf98fbe845d76c3970eedf40ca7b82a474b8fe7d1b8a4925cadd0a10701a35d0. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c50a7234-0fc8-409b-bab6-92dd2b70e07a.json and https://artists.proofprofile.net/proofs/artist/c50a7234-0fc8-409b-bab6-92dd2b70e07a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0xcf98fbe845d76c3970eedf40ca7b82a474b8fe7d1b8a4925cadd0a10701a35d0","name":"Large Lars","registered_at":"2026-06-20T20:47:46Z","symbol":"NIM1711307","token_address":"0xffcf03662ba53fb784605d6f69a55f0b0a69a01e","type":"artist","uuid":"c50a7234-0fc8-409b-bab6-92dd2b70e07a"}
album: Mayo Ketchup Allemaal Lekkere Sauzen
  type: MusicAlbum
  date published: 2025-05-20
  track: Mayo Ketchup Allemaal Lekkere Sauzen
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237080
    explicit: true
    by artist: Large Lars
    in album: Mayo Ketchup Allemaal Lekkere Sauzen
      type: MusicAlbum
      date published: 2025-05-20
    isrc code: TCAJR2550888
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:38:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3e94b0cd700942b1ccbbd85ff9126484a8f0786cfcd10211d68c4cf01df8caae
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958242
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958242
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJR2550888
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T05:02:52Z
    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 0x3e94b0cd700942b1ccbbd85ff9126484a8f0786cfcd10211d68c4cf01df8caae. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/TCAJR2550888.
      date published: 2026-07-16T05:02:52Z
    audio: Mayo Ketchup Allemaal Lekkere Sauzen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.982
      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: 0.781
      additional property: Energy
        type: PropertyValue
        value: 0.558
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.009
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.263
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.734
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.952
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major