Carlos Lucena
type: MusicGroup
genre: mpb
popularity: 2
followers: 154
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e956c9af1503a7bd986063ad9dfe45dfeeb7eee5304f9f7f756aba83902aea6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55b2f4b3-ade9-434d-9614-540181eec4e5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55b2f4b3-ade9-434d-9614-540181eec4e5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55b2f4b3-ade9-434d-9614-540181eec4e5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8e956c9af1503a7bd986063ad9dfe45dfeeb7eee5304f9f7f756aba83902aea6","name":"Carlos Lucena","registered_at":"2026-06-16T19:32:24Z","symbol":"NIM1153219","token_address":"0xf7a9a4d47c8ab4b2aabb855c94405cbe23d6692c","type":"artist","uuid":"55b2f4b3-ade9-434d-9614-540181eec4e5"}
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 0x8e956c9af1503a7bd986063ad9dfe45dfeeb7eee5304f9f7f756aba83902aea6. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55b2f4b3-ade9-434d-9614-540181eec4e5.json and https://artists.proofprofile.net/proofs/artist/55b2f4b3-ade9-434d-9614-540181eec4e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x8e956c9af1503a7bd986063ad9dfe45dfeeb7eee5304f9f7f756aba83902aea6","name":"Carlos Lucena","registered_at":"2026-06-16T19:32:24Z","symbol":"NIM1153219","token_address":"0xf7a9a4d47c8ab4b2aabb855c94405cbe23d6692c","type":"artist","uuid":"55b2f4b3-ade9-434d-9614-540181eec4e5"}
album: Brisa aos Homens
  type: MusicAlbum
  date published: 1997-06-30
album: Jogo do Jogo
  type: MusicAlbum
  date published: 2006-07-30
  track: Recado para um Amigo Solitário (feat. Paulinho Pedra Azul)
album: Fogo & Ar
  type: MusicAlbum
  date published: 2015-09-11
album: Água & Terra
  type: MusicAlbum
  date published: 2021-07-22

Recado para um Amigo Solitário (feat. Paulinho Pedra Azul)
type: MusicRecording
duration: PT3M52S
duration ms: 232520
explicit: false
by artist: Carlos Lucena
in album: Jogo do Jogo
  type: MusicAlbum
  date published: 2006-07-30
genre: mpb
isrc code: BRMS20500301
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:36:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3495dd93c5756eb46a30c54d08cb9c4cb7f4bf4a09188ab413ca4021c11fa501
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRMS20500301
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956889
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3495dd93c5756eb46a30c54d08cb9c4cb7f4bf4a09188ab413ca4021c11fa501. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRMS20500301.
  date published: 2026-07-06T06:56:49Z
audio: Recado para um Amigo Solitário (feat. Paulinho Pedra Azul)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.423
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.291
  additional property: Energy
    type: PropertyValue
    value: 0.229
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.843
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.113
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.277
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.297
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major