Marcelo Bonfá
type: MusicGroup
genre: brazilian pop
genre: brazilian rock
description: Marcelo Augusto Bonfá (born 30 January 1965), also known simply as Bonfá, is a Brazilian drummer who was previously a member of the rock band Legião Urbana. After its disbanding, he pursued a solo car
popularity: 29
followers: 13155
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3de2ba2efec1756b58b6a122712ee1d317290f8f69eedffb8ca72173858ce75a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5e57fe2-d992-4684-9d3a-27ffb95d9070.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5e57fe2-d992-4684-9d3a-27ffb95d9070.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e5e57fe2-d992-4684-9d3a-27ffb95d9070
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3de2ba2efec1756b58b6a122712ee1d317290f8f69eedffb8ca72173858ce75a","name":"Marcelo Bonfá","registered_at":"2026-06-12T18:01:39Z","symbol":"NIM0329988","token_address":"0xb006b7dc8eb36178f2dd8cff9db893006cbc83c4","type":"artist","uuid":"e5e57fe2-d992-4684-9d3a-27ffb95d9070"}
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 0x3de2ba2efec1756b58b6a122712ee1d317290f8f69eedffb8ca72173858ce75a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5e57fe2-d992-4684-9d3a-27ffb95d9070.json and https://artists.proofprofile.net/proofs/artist/e5e57fe2-d992-4684-9d3a-27ffb95d9070.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x3de2ba2efec1756b58b6a122712ee1d317290f8f69eedffb8ca72173858ce75a","name":"Marcelo Bonfá","registered_at":"2026-06-12T18:01:39Z","symbol":"NIM0329988","token_address":"0xb006b7dc8eb36178f2dd8cff9db893006cbc83c4","type":"artist","uuid":"e5e57fe2-d992-4684-9d3a-27ffb95d9070"}
album: O Barco Além do Sol
  type: MusicAlbum
  date published: 2000-05-12
  track: Depois da Chuva
    type: MusicRecording
    duration: PT4M30S
    duration ms: 270733
    explicit: false
    by artist: Marcelo Bonfá
    in album: O Barco Além do Sol
      type: MusicAlbum
      date published: 2000-05-12
    genre: brazilian pop
    genre: brazilian rock
    isrc code: QZ5AB1617179
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T06:32:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x87852e35b975dc7d1ef1dc70233a6cda16e8707ea357ec310307da566ccf3575
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958510
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958510
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1617179
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T06:38:22Z
    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 0x87852e35b975dc7d1ef1dc70233a6cda16e8707ea357ec310307da566ccf3575. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZ5AB1617179.
      date published: 2026-07-18T06:38:22Z
    audio: Depois da Chuva
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.9
      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: 0.476
      additional property: Energy
        type: PropertyValue
        value: 0.69
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.004
      additional property: Liveness
        type: PropertyValue
        value: 0.027
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.434
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.77
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Bonfá + Videotracks
  type: MusicAlbum
  date published: 2004-05-06
album: Bonfá + Videotracks
  type: MusicAlbum
  date published: 2004-05-06
album: Mobile
  type: MusicAlbum
  date published: 2007-07-13
album: Vem Dar um Dó
  type: MusicAlbum
  date published: 2016-08-10
album: Música de Alambique
  type: MusicAlbum
  date published: 2016-11-25
album: Outono
  type: MusicAlbum
  date published: 2020-04-23
album: Improvável Certeza
  type: MusicAlbum
  date published: 2021-10-08
album: Improvável Certeza
  type: MusicAlbum
  date published: 2021-10-15
track: Tempo Perdido - Ao Vivo
  type: MusicRecording
  duration: PT4M55S
  duration ms: 295480
  explicit: false
  by artist: Jota Quest
  by artist: Dado Villa-Lobos
  by artist: Marcelo Bonfá
  in album: Multishow ao Vivo - Jota Quest - Folia & Caos
    type: MusicAlbum
    date published: 2012-05-14
  genre: mpb
  genre: pop-rock-brasileiro
  genre: brazilian-rock
  genre: rock-nacional-brasileiro
  genre: rock-mineiro
  isrc code: BRSME1200030
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T13:40:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdc52677478cdc7995ce7a21c352da7434afc3e4d04ce252eb56b56d79538bd7c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953513
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953513
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSME1200030
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:47:07Z
  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 0xdc52677478cdc7995ce7a21c352da7434afc3e4d04ce252eb56b56d79538bd7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSME1200030.
    date published: 2026-06-13T12:47:07Z
  audio: Tempo Perdido - Ao Vivo

Tempo Perdido - Ao Vivo
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 172.819
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.195
additional property: Energy
  type: PropertyValue
  value: 0.876
additional property: Speechiness
  type: PropertyValue
  value: 0.214
additional property: Acousticness
  type: PropertyValue
  value: 0
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.762
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.364
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.872
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor