Léka
type: MusicGroup
popularity: 4
followers: 114
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x83b074341ab5d3053140bc8ecba292aa8ca2e24655a9bb681de1b6a2f0d82b7e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ff53d938-d2ac-4496-8fe6-7f7b932d6e19.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ff53d938-d2ac-4496-8fe6-7f7b932d6e19.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ff53d938-d2ac-4496-8fe6-7f7b932d6e19
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x83b074341ab5d3053140bc8ecba292aa8ca2e24655a9bb681de1b6a2f0d82b7e","name":"Léka","registered_at":"2026-06-21T18:35:04Z","symbol":"NIM2002680","token_address":"0xc57af9894996de9a31718ff13b7155d875051d93","type":"artist","uuid":"ff53d938-d2ac-4496-8fe6-7f7b932d6e19"}
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 0x83b074341ab5d3053140bc8ecba292aa8ca2e24655a9bb681de1b6a2f0d82b7e. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff53d938-d2ac-4496-8fe6-7f7b932d6e19.json and https://artists.proofprofile.net/proofs/artist/ff53d938-d2ac-4496-8fe6-7f7b932d6e19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x83b074341ab5d3053140bc8ecba292aa8ca2e24655a9bb681de1b6a2f0d82b7e","name":"Léka","registered_at":"2026-06-21T18:35:04Z","symbol":"NIM2002680","token_address":"0xc57af9894996de9a31718ff13b7155d875051d93","type":"artist","uuid":"ff53d938-d2ac-4496-8fe6-7f7b932d6e19"}
album: Nosotros dos
  type: MusicAlbum
  date published: 2021-03-18
album: Colorao
  type: MusicAlbum
  date published: 2021-05-15
album: Ni Amigos
  type: MusicAlbum
  date published: 2021-12-19
album: Con Un Blunt
  type: MusicAlbum
  date published: 2022-02-10
album: Saturno
  type: MusicAlbum
  date published: 2022-02-20
album: Par De Meses
  type: MusicAlbum
  date published: 2022-10-07
album: Cuando Pienses en Mi
  type: MusicAlbum
  date published: 2023-07-16
album: No Te Entiendo
  type: MusicAlbum
  date published: 2024-07-21
album: SEDADO
  type: MusicAlbum
  date published: 2024-12-08
  track: SEDADO
    type: MusicRecording
    duration: PT2M49S
    duration ms: 169850
    explicit: false
    by artist: Léka
    in album: SEDADO
      type: MusicAlbum
      date published: 2024-12-08
    isrc code: QZZ7R2459219
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T13:39:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa6d21233b5c0e9a877c6097f4331b54843b678a9dff0fe8d6faaf2e83f401c8f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7R2459219
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0xa6d21233b5c0e9a877c6097f4331b54843b678a9dff0fe8d6faaf2e83f401c8f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7R2459219.
      date published: 2026-07-05T19:27:56Z
    audio: SEDADO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.743
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.492
      additional property: Energy
        type: PropertyValue
        value: 0.414
      additional property: Speechiness
        type: PropertyValue
        value: 0.106
      additional property: Acousticness
        type: PropertyValue
        value: 0.131
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.012
      additional property: Liveness
        type: PropertyValue
        value: 0.138
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.049
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.175
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: MAY
  type: MusicAlbum
  date published: 2025-08-08
album: no sé tú
  type: MusicAlbum
  date published: 2025-11-12