Marques Filho
type: MusicGroup
genre: gospel
popularity: 31
followers: 2488
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e4719e5b8b8f86ac6d24fe138fea6b25ce0b4091fd9b514122113edf9df9edb
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/32b0b2c9-223f-4b84-87db-46d22724d1f4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32b0b2c9-223f-4b84-87db-46d22724d1f4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/32b0b2c9-223f-4b84-87db-46d22724d1f4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9e4719e5b8b8f86ac6d24fe138fea6b25ce0b4091fd9b514122113edf9df9edb","name":"Marques Filho","registered_at":"2026-06-11T15:40:51Z","symbol":"NIM0066475","token_address":"0x139895b7abb8f08e9151dff6ffb2a484ea215dfb","type":"artist","uuid":"32b0b2c9-223f-4b84-87db-46d22724d1f4"}
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 0x9e4719e5b8b8f86ac6d24fe138fea6b25ce0b4091fd9b514122113edf9df9edb. 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/32b0b2c9-223f-4b84-87db-46d22724d1f4.json and https://artists.proofprofile.net/proofs/artist/32b0b2c9-223f-4b84-87db-46d22724d1f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x9e4719e5b8b8f86ac6d24fe138fea6b25ce0b4091fd9b514122113edf9df9edb","name":"Marques Filho","registered_at":"2026-06-11T15:40:51Z","symbol":"NIM0066475","token_address":"0x139895b7abb8f08e9151dff6ffb2a484ea215dfb","type":"artist","uuid":"32b0b2c9-223f-4b84-87db-46d22724d1f4"}
album: A Marca da Promessa
  type: MusicAlbum
  date published: 2020-02-05
album: Nosso Amor
  type: MusicAlbum
  date published: 2023-06-10
album: Em Fervente Oração (Cover)
  type: MusicAlbum
  date published: 2023-07-18
album: A Voz do Silêncio (Playback)
  type: MusicAlbum
  date published: 2023-10-11
album: A Voz do Silêncio
  type: MusicAlbum
  date published: 2023-10-11
  track: A Voz do Silêncio
    type: MusicRecording
    duration: PT4M39S
    duration ms: 279499
    explicit: false
    by artist: Marques Filho
    in album: A Voz do Silêncio
      type: MusicAlbum
      date published: 2023-10-11
    genre: gospel
    isrc code: BKUPA2300001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T21:32:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xefb3b5a9580155f99ce8aa674863e06cb01abca54bd2173cab0f576258921505
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKUPA2300001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xefb3b5a9580155f99ce8aa674863e06cb01abca54bd2173cab0f576258921505. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKUPA2300001.
      date published: 2026-07-05T01:12:41Z
    audio: A Voz do Silêncio
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.854
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.462
      additional property: Energy
        type: PropertyValue
        value: 0.749
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.248
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.146
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.556
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.633
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Carta pra Deus
  type: MusicAlbum
  date published: 2024-02-14
album: Quem Faz Sou Eu
  type: MusicAlbum
  date published: 2024-04-16