Lê e Léo
type: MusicGroup
popularity: 2
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0c1fb214810b46acd7fb25f20c1162e7f0a4e60147a30af7e82fb938c9b0941
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953962
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953962
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/280861af-3dc2-4e81-bb9e-e8107830c6a9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/280861af-3dc2-4e81-bb9e-e8107830c6a9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/280861af-3dc2-4e81-bb9e-e8107830c6a9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T15:03:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf0c1fb214810b46acd7fb25f20c1162e7f0a4e60147a30af7e82fb938c9b0941","name":"Lê e Léo","registered_at":"2026-06-16T03:27:38Z","symbol":"NIM0922958","token_address":"0x19f1b65a97f01c12bbdd1a8b125583a4cbfae7b5","type":"artist","uuid":"280861af-3dc2-4e81-bb9e-e8107830c6a9"}
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 0xf0c1fb214810b46acd7fb25f20c1162e7f0a4e60147a30af7e82fb938c9b0941. Chain 2 (Bitcoin): anchored in block 953962 (2026-06-16T15:03:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/280861af-3dc2-4e81-bb9e-e8107830c6a9.json and https://artists.proofprofile.net/proofs/artist/280861af-3dc2-4e81-bb9e-e8107830c6a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T15:03:47Z
  text: {"copyright_id":"0xf0c1fb214810b46acd7fb25f20c1162e7f0a4e60147a30af7e82fb938c9b0941","name":"Lê e Léo","registered_at":"2026-06-16T03:27:38Z","symbol":"NIM0922958","token_address":"0x19f1b65a97f01c12bbdd1a8b125583a4cbfae7b5","type":"artist","uuid":"280861af-3dc2-4e81-bb9e-e8107830c6a9"}
album: Silêncio (Ao Vivo)
  type: MusicAlbum
  date published: 2025-10-17
  track: Silêncio - Ao Vivo
    type: MusicRecording
    duration: PT2M25S
    duration ms: 145754
    explicit: false
    by artist: Lê e Léo
    in album: Silêncio (Ao Vivo)
      type: MusicAlbum
      date published: 2025-10-17
    isrc code: BXNT62503209
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T07:37:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd034b07ad26dde1fb3197038a90fe6ee63b2dc7e53d88490c3d8b3bad73aa3cf
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXNT62503209
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xd034b07ad26dde1fb3197038a90fe6ee63b2dc7e53d88490c3d8b3bad73aa3cf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXNT62503209.
      date published: 2026-07-05T10:01:46Z
    audio: Silêncio - Ao Vivo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.993
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.624
      additional property: Energy
        type: PropertyValue
        value: 0.61
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.532
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.238
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.535
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.536
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major