Bface
type: MusicGroup
genre: boom bap
popularity: 10
followers: 1181
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e7a5f01d95ba32fa69ca3712d3389bec9aefc40ad1fa6f11037f8cbb6c23dc1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/accd3b50-eefa-4275-b5dd-92d569b310eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/accd3b50-eefa-4275-b5dd-92d569b310eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/accd3b50-eefa-4275-b5dd-92d569b310eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
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 0x9e7a5f01d95ba32fa69ca3712d3389bec9aefc40ad1fa6f11037f8cbb6c23dc1. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/accd3b50-eefa-4275-b5dd-92d569b310eb.json and https://artists.proofprofile.net/proofs/artist/accd3b50-eefa-4275-b5dd-92d569b310eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
album: Suíte para Corações Urbanos
  type: MusicAlbum
  date published: 2014
album: Sextape
  type: MusicAlbum
  date published: 2016-09-29
album: O Infame
  type: MusicAlbum
  date published: 2017-03-14
album: Práxis
  type: MusicAlbum
  date published: 2017-11-09
album: Gradientes
  type: MusicAlbum
  date published: 2018-09-05
album: Mercúrio
  type: MusicAlbum
  date published: 2020-08-19
album: Egoritmos
  type: MusicAlbum
  date published: 2021-02-17
album: Egoritmos
  type: MusicAlbum
  date published: 2021-02-17
album: Linhas Aéreas
  type: MusicAlbum
  date published: 2022-07-20
  track: Linhas Aéreas
    type: MusicRecording
    duration: PT2M55S
    duration ms: 175431
    explicit: false
    by artist: Bface
    in album: Linhas Aéreas
      type: MusicAlbum
      date published: 2022-07-20
    genre: boom bap
    isrc code: BCBCS2200001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-28T22:38:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc8f84eba9e1d026e9055fe0ab6dec892c4b73e43812a60e07b5313031a01869e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCBCS2200001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0xc8f84eba9e1d026e9055fe0ab6dec892c4b73e43812a60e07b5313031a01869e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BCBCS2200001.
      date published: 2026-07-02T16:51:38Z
    audio: Linhas Aéreas
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.071
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.65
      additional property: Energy
        type: PropertyValue
        value: 0.78
      additional property: Speechiness
        type: PropertyValue
        value: 0.293
      additional property: Acousticness
        type: PropertyValue
        value: 0.094
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.229
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.808
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.668
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Semi-Leito
  type: MusicAlbum
  date published: 2023-09-28
album: Perdido no Tempo
  type: MusicAlbum
  date published: 2024-09-25
album: Paciência
  type: MusicAlbum
  date published: 2024-10-04