Os Kurandeiros
type: MusicGroup
genre: brazilian rock
popularity: 3
followers: 145
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3dd5cd4adbc6565346c372583d04b35f558fb4bff3816712f0ad8f9847bcf9ea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1763f5b7-8882-4361-8111-4fd5263518dd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1763f5b7-8882-4361-8111-4fd5263518dd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1763f5b7-8882-4361-8111-4fd5263518dd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3dd5cd4adbc6565346c372583d04b35f558fb4bff3816712f0ad8f9847bcf9ea","name":"Os Kurandeiros","registered_at":"2026-06-15T21:41:03Z","symbol":"NIM0840217","token_address":"0x1f80ae40602ad0de74007a79d6fb2440a9033314","type":"artist","uuid":"1763f5b7-8882-4361-8111-4fd5263518dd"}
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 0x3dd5cd4adbc6565346c372583d04b35f558fb4bff3816712f0ad8f9847bcf9ea. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1763f5b7-8882-4361-8111-4fd5263518dd.json and https://artists.proofprofile.net/proofs/artist/1763f5b7-8882-4361-8111-4fd5263518dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0x3dd5cd4adbc6565346c372583d04b35f558fb4bff3816712f0ad8f9847bcf9ea","name":"Os Kurandeiros","registered_at":"2026-06-15T21:41:03Z","symbol":"NIM0840217","token_address":"0x1f80ae40602ad0de74007a79d6fb2440a9033314","type":"artist","uuid":"1763f5b7-8882-4361-8111-4fd5263518dd"}
album: Sonhos & Rosquinhas Suite
  type: MusicAlbum
  date published: 2020
album: Pronto pra Festa (Ao Vivo)
  type: MusicAlbum
  date published: 2021
  track: A Galera Quer Rock - Ao Vivo
    type: MusicRecording
    duration: PT3M0S
    duration ms: 180026
    explicit: false
    by artist: Os Kurandeiros
    in album: Pronto pra Festa (Ao Vivo)
      type: MusicAlbum
      date published: 2021
    genre: brazilian rock
    isrc code: BCJQK2400007
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T17:51:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x20ee9d4d63675a1719a2e452eb668f92eed2fc8d237938cc0953793a7c676cd2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958594
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958594
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCJQK2400007
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T18:05:01Z
    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 0x20ee9d4d63675a1719a2e452eb668f92eed2fc8d237938cc0953793a7c676cd2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BCJQK2400007.
      date published: 2026-07-18T18:05:01Z
    audio: A Galera Quer Rock - Ao Vivo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.262
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.577
      additional property: Energy
        type: PropertyValue
        value: 0.714
      additional property: Speechiness
        type: PropertyValue
        value: 0.11
      additional property: Acousticness
        type: PropertyValue
        value: 0.073
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.135
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.866
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.861
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Cidade Fantasma
  type: MusicAlbum
  date published: 2022-06-18