Kei
type: MusicGroup
popularity: 15
followers: 210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb444ef398e6d5a47aad632b1095e29b5789b9c9da74f36852991e28ecf9d425a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953626
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953626
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b6d49f4-4d83-4ffa-98ac-72e08a36a264.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b6d49f4-4d83-4ffa-98ac-72e08a36a264.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b6d49f4-4d83-4ffa-98ac-72e08a36a264
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:41:45Z
additional property: OTSCanonicalRecord
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 0xb444ef398e6d5a47aad632b1095e29b5789b9c9da74f36852991e28ecf9d425a. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b6d49f4-4d83-4ffa-98ac-72e08a36a264.json and https://artists.proofprofile.net/proofs/artist/2b6d49f4-4d83-4ffa-98ac-72e08a36a264.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T11:41:45Z
album: Turbo GT
  type: MusicAlbum
  date published: 2024-01-19
album: Babylone
  type: MusicAlbum
  date published: 2024-02-16
album: Croire en toi
  type: MusicAlbum
  date published: 2024-03-29
album: Numéro 9
  type: MusicAlbum
  date published: 2024-05-17
album: Aucune trace
  type: MusicAlbum
  date published: 2024-06-28
album: Galères (Freestyle Maquette 5)
  type: MusicAlbum
  date published: 2024-08-09
album: SHOCK (Freestyle Maquette 6)
  type: MusicAlbum
  date published: 2024-09-25
album: Mauvaises ondes (Freestyle maquette 7)
  type: MusicAlbum
  date published: 2024-11-11
album: Mauvaises ondes (Freestyle maquette 7)
  type: MusicAlbum
  date published: 2024-11-11
album: ELLE (Freestyle maquette 8)
  type: MusicAlbum
  date published: 2024-11-22
  track: ELLE (Freestyle maquette 8)
    type: MusicRecording
    duration: PT2M0S
    duration ms: 120000
    explicit: true
    by artist: Kei
    in album: ELLE (Freestyle maquette 8)
      type: MusicAlbum
      date published: 2024-11-22
    isrc code: QZZ7K2498205
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T15:16:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd05d828a82f71426c4f46cbf36f0efd05889a8ea13d4a1bd1bb393e57e56d7b4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959024
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959024
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7K2498205
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T15:31:18Z
    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 0xd05d828a82f71426c4f46cbf36f0efd05889a8ea13d4a1bd1bb393e57e56d7b4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7K2498205 — a six-check JSON result.
      date published: 2026-07-21T15:31:18Z
    audio: ELLE (Freestyle maquette 8)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.644
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.6
      additional property: Energy
        type: PropertyValue
        value: 0.462
      additional property: Speechiness
        type: PropertyValue
        value: 0.159
      additional property: Acousticness
        type: PropertyValue
        value: 0.061
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.01
      additional property: Liveness
        type: PropertyValue
        value: 0.131
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.247
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.363
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 4 saisons
  type: MusicAlbum
  date published: 2025-02-14
album: Mille à l'heure
  type: MusicAlbum
  date published: 2025-04-04
album: Bleu foncé
  type: MusicAlbum
  date published: 2025-06-27