Hugo Barra
type: MusicGroup
genre: forró
genre: piseiro
description: Hugo Barra is a Brazilian computer scientist, technology executive and entrepreneur. From 2008 to 2013, he worked in a number of product management roles at Google, including vice president and produc
popularity: 5
followers: 174
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x660212ae40aae235ae0e1fe97a0a138170f4bb01c71bf2d792b7e6ffb2fa7e63
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2122cfa5-e09a-440e-bde5-2c0bcb797930.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2122cfa5-e09a-440e-bde5-2c0bcb797930.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2122cfa5-e09a-440e-bde5-2c0bcb797930
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x660212ae40aae235ae0e1fe97a0a138170f4bb01c71bf2d792b7e6ffb2fa7e63","name":"Hugo Barra","registered_at":"2026-06-16T01:23:17Z","symbol":"NIM0893255","token_address":"0x142c56b978aa6fbe26ba18cd0708c7c8620a829a","type":"artist","uuid":"2122cfa5-e09a-440e-bde5-2c0bcb797930"}
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 0x660212ae40aae235ae0e1fe97a0a138170f4bb01c71bf2d792b7e6ffb2fa7e63. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2122cfa5-e09a-440e-bde5-2c0bcb797930.json and https://artists.proofprofile.net/proofs/artist/2122cfa5-e09a-440e-bde5-2c0bcb797930.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
  text: {"copyright_id":"0x660212ae40aae235ae0e1fe97a0a138170f4bb01c71bf2d792b7e6ffb2fa7e63","name":"Hugo Barra","registered_at":"2026-06-16T01:23:17Z","symbol":"NIM0893255","token_address":"0x142c56b978aa6fbe26ba18cd0708c7c8620a829a","type":"artist","uuid":"2122cfa5-e09a-440e-bde5-2c0bcb797930"}
album: Se For Amor (Cover)
  type: MusicAlbum
  date published: 2021-08-31
album: Oms
  type: MusicAlbum
  date published: 2021-09-09
album: Facas
  type: MusicAlbum
  date published: 2021-09-14
album: Meia Noite e Meia (Cover)
  type: MusicAlbum
  date published: 2022-09-27
album: Rumo Á Goiânia (Cover)
  type: MusicAlbum
  date published: 2022-10-21
album: Paguei pra Ver (Cover)
  type: MusicAlbum
  date published: 2022-10-21
album: Som de Paredão (Coladinho Vai)
  type: MusicAlbum
  date published: 2023-06-21
  track: Som de Paredão (Coladinho Vai)
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199552
    explicit: false
    by artist: Hugo Barra
    in album: Som de Paredão (Coladinho Vai)
      type: MusicAlbum
      date published: 2023-06-21
    genre: forró
    genre: piseiro
    isrc code: QZNJX2309616
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T16:06:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0a5deabc9b92d97977dfa3b8486399a5f00112b39e156c595cc4d20fc3c5fe62
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958576
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2309616
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T16:22:28Z
    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 0x0a5deabc9b92d97977dfa3b8486399a5f00112b39e156c595cc4d20fc3c5fe62. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNJX2309616.
      date published: 2026-07-18T16:22:28Z
    audio: Som de Paredão (Coladinho Vai)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94
      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: 0.719
      additional property: Energy
        type: PropertyValue
        value: 0.83
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.442
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.063
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.92
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.254
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major