Jeanne Lefèvre
type: MusicGroup
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe98f6f9f6edabc53e4481cdd5605f309144f8fe63c5c3224890a6bd51ee94431
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3f69218-c6af-4d6f-9e23-c8fad7f0be59.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3f69218-c6af-4d6f-9e23-c8fad7f0be59.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e3f69218-c6af-4d6f-9e23-c8fad7f0be59
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe98f6f9f6edabc53e4481cdd5605f309144f8fe63c5c3224890a6bd51ee94431","name":"Jeanne Lefèvre","registered_at":"2026-06-21T07:53:49Z","symbol":"NIM1866823","token_address":"0x8863110bcae28986ded3a04787c69ab7c07e2ef3","type":"artist","uuid":"e3f69218-c6af-4d6f-9e23-c8fad7f0be59"}
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 0xe98f6f9f6edabc53e4481cdd5605f309144f8fe63c5c3224890a6bd51ee94431. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3f69218-c6af-4d6f-9e23-c8fad7f0be59.json and https://artists.proofprofile.net/proofs/artist/e3f69218-c6af-4d6f-9e23-c8fad7f0be59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xe98f6f9f6edabc53e4481cdd5605f309144f8fe63c5c3224890a6bd51ee94431","name":"Jeanne Lefèvre","registered_at":"2026-06-21T07:53:49Z","symbol":"NIM1866823","token_address":"0x8863110bcae28986ded3a04787c69ab7c07e2ef3","type":"artist","uuid":"e3f69218-c6af-4d6f-9e23-c8fad7f0be59"}
album: Sons de la Nature
  type: MusicAlbum
  date published: 2024-06-07
  track: Jardin de Méditation
    type: MusicRecording
    duration: PT1M20S
    duration ms: 80000
    explicit: false
    by artist: Jeanne Lefèvre
    in album: Sons de la Nature
      type: MusicAlbum
      date published: 2024-06-07
    isrc code: NL8RL2420977
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:07:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdf13d44c11c3b055436046a744ba16e1b6eadccaf98cd67dab1c8664ed7feb9b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958903
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958903
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL8RL2420977
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T18:06:10Z
    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 0xdf13d44c11c3b055436046a744ba16e1b6eadccaf98cd67dab1c8664ed7feb9b. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:06:10Z), 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/NL8RL2420977.
      date published: 2026-07-20T18:06:10Z
    audio: Jardin de Méditation
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 174.949
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.166
      additional property: Energy
        type: PropertyValue
        value: 0.286
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.87
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.714
      additional property: Liveness
        type: PropertyValue
        value: 0.129
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.036
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.622
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major