David Guerchon
type: MusicGroup
popularity: 11
followers: 541
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x556eb0c71918c7b6c56b930b8d44d050ce4ceb59b1cc35cde80cbc626feda05c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e2c017ad-c620-4c1f-96e8-b2d2606e59cd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e2c017ad-c620-4c1f-96e8-b2d2606e59cd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e2c017ad-c620-4c1f-96e8-b2d2606e59cd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x556eb0c71918c7b6c56b930b8d44d050ce4ceb59b1cc35cde80cbc626feda05c","name":"David Guerchon","registered_at":"2026-06-15T04:20:46Z","symbol":"NIM0680268","token_address":"0xb9b2d0f8119b4dffd81a7ccd1ccbdbef13c96f9f","type":"artist","uuid":"e2c017ad-c620-4c1f-96e8-b2d2606e59cd"}
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 0x556eb0c71918c7b6c56b930b8d44d050ce4ceb59b1cc35cde80cbc626feda05c. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2c017ad-c620-4c1f-96e8-b2d2606e59cd.json and https://artists.proofprofile.net/proofs/artist/e2c017ad-c620-4c1f-96e8-b2d2606e59cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0x556eb0c71918c7b6c56b930b8d44d050ce4ceb59b1cc35cde80cbc626feda05c","name":"David Guerchon","registered_at":"2026-06-15T04:20:46Z","symbol":"NIM0680268","token_address":"0xb9b2d0f8119b4dffd81a7ccd1ccbdbef13c96f9f","type":"artist","uuid":"e2c017ad-c620-4c1f-96e8-b2d2606e59cd"}
album: Rap Battle Kaamelott VS Le Visiteur du Futur
  type: MusicAlbum
  date published: 2018-01-21
  track: Rap Battle Kaamelott VS Le Visiteur du Futur
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165160
    explicit: false
    by artist: David Guerchon
    in album: Rap Battle Kaamelott VS Le Visiteur du Futur
      type: MusicAlbum
      date published: 2018-01-21
    isrc code: TCAEY2027176
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T10:52:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd626f026dc84387f75c3e0d83df9f6a7bad0712bef1ae8ebed75398df80ead3e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959123
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959123
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEY2027176
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T11:35:32Z
    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 0xd626f026dc84387f75c3e0d83df9f6a7bad0712bef1ae8ebed75398df80ead3e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAEY2027176.
      date published: 2026-07-22T11:35:32Z
    audio: Rap Battle Kaamelott VS Le Visiteur du Futur
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.981
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.836
      additional property: Energy
        type: PropertyValue
        value: 0.555
      additional property: Speechiness
        type: PropertyValue
        value: 0.179
      additional property: Acousticness
        type: PropertyValue
        value: 0.33
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.211
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.933
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.788
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Rap Battle Bref VS Bloqués
  type: MusicAlbum
  date published: 2018-09-02
album: La Chanson du Choixpeau Magique, Harry Potter
  type: MusicAlbum
  date published: 2020-05-24
album: Rap Battle - Le Seigneur des Anneaux
  type: MusicAlbum
  date published: 2021-04-02