Two Boyca
type: MusicGroup
genre: afro house
genre: kuduro
popularity: 3
followers: 1325
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1eb388c3d1539c445e07fdee79a28490468c93f76778f32e788392c238c983fd
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/4a4a562e-9197-48a4-8f4a-26468555f3ea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4a4a562e-9197-48a4-8f4a-26468555f3ea.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4a4a562e-9197-48a4-8f4a-26468555f3ea
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1eb388c3d1539c445e07fdee79a28490468c93f76778f32e788392c238c983fd","name":"Two Boyca","registered_at":"2026-06-16T15:33:31Z","symbol":"NIM1096228","token_address":"0x241e909608448160dfc4a93f52ce75daacbfce94","type":"artist","uuid":"4a4a562e-9197-48a4-8f4a-26468555f3ea"}
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 0x1eb388c3d1539c445e07fdee79a28490468c93f76778f32e788392c238c983fd. 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/4a4a562e-9197-48a4-8f4a-26468555f3ea.json and https://artists.proofprofile.net/proofs/artist/4a4a562e-9197-48a4-8f4a-26468555f3ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x1eb388c3d1539c445e07fdee79a28490468c93f76778f32e788392c238c983fd","name":"Two Boyca","registered_at":"2026-06-16T15:33:31Z","symbol":"NIM1096228","token_address":"0x241e909608448160dfc4a93f52ce75daacbfce94","type":"artist","uuid":"4a4a562e-9197-48a4-8f4a-26468555f3ea"}
album: Sapato do Boyca
  type: MusicAlbum
  date published: 2021-03-28
  track: Sapato do Boyca
    type: MusicRecording
    duration: PT4M8S
    duration ms: 248778
    explicit: true
    by artist: Two Boyca
    in album: Sapato do Boyca
      type: MusicAlbum
      date published: 2021-03-28
    genre: afro house
    genre: kuduro
    isrc code: ES71G2117049
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:13:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x40fdde91a205934835b219bd81fb6dad9261be72624f3ad2a2001f001f998d82
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2117049
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0x40fdde91a205934835b219bd81fb6dad9261be72624f3ad2a2001f001f998d82. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES71G2117049.
      date published: 2026-07-05T04:47:21Z
    audio: Sapato do Boyca
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.952
      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: 0.845
      additional property: Energy
        type: PropertyValue
        value: 0.623
      additional property: Speechiness
        type: PropertyValue
        value: 0.229
      additional property: Acousticness
        type: PropertyValue
        value: 0.359
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.52
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.418
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sapato do Boyca
  type: MusicAlbum
  date published: 2021-03-28
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  type: MusicAlbum
  date published: 2021-06-11
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  type: MusicAlbum
  date published: 2022-06-09
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  type: MusicAlbum
  date published: 2024-04-04
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  type: MusicAlbum
  date published: 2024-09-23