Lukas Barcellos
type: MusicGroup
popularity: 7
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x369fc9d914551a951ecc18f96e3d018fde23183b741c3ad3838e5e1ff3c00805
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/375c62a3-0769-4451-bed7-17663c7bbd09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/375c62a3-0769-4451-bed7-17663c7bbd09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/375c62a3-0769-4451-bed7-17663c7bbd09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x369fc9d914551a951ecc18f96e3d018fde23183b741c3ad3838e5e1ff3c00805","name":"Lukas Barcellos","registered_at":"2026-06-16T08:48:33Z","symbol":"NIM0999608","token_address":"0x5c64d4abf61a951e07b668bbb30ed660fb34e4c4","type":"artist","uuid":"375c62a3-0769-4451-bed7-17663c7bbd09"}
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 0x369fc9d914551a951ecc18f96e3d018fde23183b741c3ad3838e5e1ff3c00805. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/375c62a3-0769-4451-bed7-17663c7bbd09.json and https://artists.proofprofile.net/proofs/artist/375c62a3-0769-4451-bed7-17663c7bbd09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x369fc9d914551a951ecc18f96e3d018fde23183b741c3ad3838e5e1ff3c00805","name":"Lukas Barcellos","registered_at":"2026-06-16T08:48:33Z","symbol":"NIM0999608","token_address":"0x5c64d4abf61a951e07b668bbb30ed660fb34e4c4","type":"artist","uuid":"375c62a3-0769-4451-bed7-17663c7bbd09"}
album: Casa de Maria
  type: MusicAlbum
  date published: 2021
  track: Vem Reinar
    type: MusicRecording
    duration: PT5M24S
    duration ms: 324207
    explicit: false
    by artist: Lukas Barcellos
    in album: Casa de Maria
      type: MusicAlbum
      date published: 2021
    isrc code: QZMZ92528276
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T00:05:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcc8510eb33bc21843b06c37a6c90f77394b5f5d139b3d2a81adfe476f8edddde
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958800
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958800
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92528276
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T03:06:06Z
    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 0xcc8510eb33bc21843b06c37a6c90f77394b5f5d139b3d2a81adfe476f8edddde. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:06Z), 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/QZMZ92528276.
      date published: 2026-07-20T03:06:06Z
    audio: Vem Reinar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.659
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.331
      additional property: Energy
        type: PropertyValue
        value: 0.402
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.869
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.349
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.82
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major