Guff Lavander
type: MusicGroup
popularity: 9
followers: 821
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x57c3d8c39ce461679459adeb4b284438ec37cfc1c284c147b7cf65e63afc9dd3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d9da28af-673b-4a8d-aaf8-d1ddf5260bbf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d9da28af-673b-4a8d-aaf8-d1ddf5260bbf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d9da28af-673b-4a8d-aaf8-d1ddf5260bbf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x57c3d8c39ce461679459adeb4b284438ec37cfc1c284c147b7cf65e63afc9dd3","name":"Guff Lavander","registered_at":"2026-06-21T04:11:26Z","symbol":"NIM1814740","token_address":"0x4702f54b9376da5ddbdc516ce562fb9839d99940","type":"artist","uuid":"d9da28af-673b-4a8d-aaf8-d1ddf5260bbf"}
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 0x57c3d8c39ce461679459adeb4b284438ec37cfc1c284c147b7cf65e63afc9dd3. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9da28af-673b-4a8d-aaf8-d1ddf5260bbf.json and https://artists.proofprofile.net/proofs/artist/d9da28af-673b-4a8d-aaf8-d1ddf5260bbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0x57c3d8c39ce461679459adeb4b284438ec37cfc1c284c147b7cf65e63afc9dd3","name":"Guff Lavander","registered_at":"2026-06-21T04:11:26Z","symbol":"NIM1814740","token_address":"0x4702f54b9376da5ddbdc516ce562fb9839d99940","type":"artist","uuid":"d9da28af-673b-4a8d-aaf8-d1ddf5260bbf"}
album: Please, Change Your Mind.
  type: MusicAlbum
  date published: 2018-10-21
album: UNICORN
  type: MusicAlbum
  date published: 2019-01-04
album: I'm Yur Type
  type: MusicAlbum
  date published: 2019-06-28
album: 0.00 $ Parapluie
  type: MusicAlbum
  date published: 2019-07-25
album: Kimetsu No Yaiba
  type: MusicAlbum
  date published: 2019-11-29
  track: Kimetsu No Yaiba
    type: MusicRecording
    duration: PT3M45S
    duration ms: 225056
    explicit: false
    by artist: Guff Lavander
    in album: Kimetsu No Yaiba
      type: MusicAlbum
      date published: 2019-11-29
    isrc code: QZHNC1944133
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T04:46:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfeebcfb635fe2513d49b2074bdcbf91ba0f957f9042f9828bae43ee3f8d86872
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959105
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959105
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC1944133
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T07:49:31Z
    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 0xfeebcfb635fe2513d49b2074bdcbf91ba0f957f9042f9828bae43ee3f8d86872. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:49:31Z), 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/QZHNC1944133.
      date published: 2026-07-22T07:49:31Z
    audio: Kimetsu No Yaiba
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.039
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.871
      additional property: Energy
        type: PropertyValue
        value: 0.189
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.689
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.271
      additional property: Liveness
        type: PropertyValue
        value: 0.103
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.341
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.588
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Revenge on Society
  type: MusicAlbum
  date published: 2020-02-29
album: A New Earth Somewhere
  type: MusicAlbum
  date published: 2020-04-10
album: Summer in Nova Scotia
  type: MusicAlbum
  date published: 2020-05-08
album: Summer in Nova Scotia
  type: MusicAlbum
  date published: 2020-05-08
album: Bonjour Mademoizelle...
  type: MusicAlbum
  date published: 2023-02-17
album: Elixir
  type: MusicAlbum
  date published: 2023-08-25
album: ELIXIR
  type: MusicAlbum
  date published: 2023-08-25
album: Harmonica.
  type: MusicAlbum
  date published: 2023-12-15
album: Harmonica.
  type: MusicAlbum
  date published: 2023-12-15
album: Harmonica.
  type: MusicAlbum
  date published: 2023-12-15
album: AURA
  type: MusicAlbum
  date published: 2024-11-15