Lucas Mar
type: MusicGroup
genre: nova mpb
popularity: 3
followers: 670
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa76f702d1f04c49b062eef594cd105f7a6ad03eeeb96d64fb7d9bf36fe1c3a90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c14b6217-3898-422f-8ee1-bab5ea0ee5f9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c14b6217-3898-422f-8ee1-bab5ea0ee5f9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c14b6217-3898-422f-8ee1-bab5ea0ee5f9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa76f702d1f04c49b062eef594cd105f7a6ad03eeeb96d64fb7d9bf36fe1c3a90","name":"Lucas Mar","registered_at":"2026-06-20T19:22:44Z","symbol":"NIM1690446","token_address":"0x4a008c14c4739b9e833af7e1f8d32624ce70f697","type":"artist","uuid":"c14b6217-3898-422f-8ee1-bab5ea0ee5f9"}
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 0xa76f702d1f04c49b062eef594cd105f7a6ad03eeeb96d64fb7d9bf36fe1c3a90. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c14b6217-3898-422f-8ee1-bab5ea0ee5f9.json and https://artists.proofprofile.net/proofs/artist/c14b6217-3898-422f-8ee1-bab5ea0ee5f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xa76f702d1f04c49b062eef594cd105f7a6ad03eeeb96d64fb7d9bf36fe1c3a90","name":"Lucas Mar","registered_at":"2026-06-20T19:22:44Z","symbol":"NIM1690446","token_address":"0x4a008c14c4739b9e833af7e1f8d32624ce70f697","type":"artist","uuid":"c14b6217-3898-422f-8ee1-bab5ea0ee5f9"}
album: Broto
  type: MusicAlbum
  date published: 2021-09-17
  track: Broto
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172932
    explicit: false
    by artist: Lucas Mar
    in album: Broto
      type: MusicAlbum
      date published: 2021-09-17
    genre: nova mpb
    isrc code: BX4082100001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T14:06:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6539512a50c3c6908a29034adc1e2e2c987b41a67491f890786fb04392bf0096
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958746
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958746
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4082100001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T15:36:35Z
    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 0x6539512a50c3c6908a29034adc1e2e2c987b41a67491f890786fb04392bf0096. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BX4082100001.
      date published: 2026-07-19T15:36:35Z
    audio: Broto
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.025
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.803
      additional property: Energy
        type: PropertyValue
        value: 0.366
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.856
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.378
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.595
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.886
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Esculturas no Mar
  type: MusicAlbum
  date published: 2021-11-19
album: Flor
  type: MusicAlbum
  date published: 2022-03-04
album: Canto das Rosas
  type: MusicAlbum
  date published: 2022-05-06
album: Rebossa
  type: MusicAlbum
  date published: 2022-12-09
album: Lucas Mar Ao Vivo No TAS Sessions
  type: MusicAlbum
  date published: 2023-06-21
album: Broto (Lofi Remix)
  type: MusicAlbum
  date published: 2024-08-23
album: Marear
  type: MusicAlbum
  date published: 2024-11-28