Chico Cajú
type: MusicGroup
genre: forro tradicional
popularity: 3
followers: 398
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x169079260c839b62abc96b9260c036345871614ef5c6a2561226337ca4dd4eef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f7f65e9-88dd-44a3-b77d-7786799e0baa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f7f65e9-88dd-44a3-b77d-7786799e0baa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f7f65e9-88dd-44a3-b77d-7786799e0baa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x169079260c839b62abc96b9260c036345871614ef5c6a2561226337ca4dd4eef","name":"Chico Cajú","registered_at":"2026-06-16T11:40:05Z","symbol":"NIM1040536","token_address":"0xb2bf3b90237cf13939eef16c77e310dedd8e1942","type":"artist","uuid":"3f7f65e9-88dd-44a3-b77d-7786799e0baa"}
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 0x169079260c839b62abc96b9260c036345871614ef5c6a2561226337ca4dd4eef. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f7f65e9-88dd-44a3-b77d-7786799e0baa.json and https://artists.proofprofile.net/proofs/artist/3f7f65e9-88dd-44a3-b77d-7786799e0baa.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x169079260c839b62abc96b9260c036345871614ef5c6a2561226337ca4dd4eef","name":"Chico Cajú","registered_at":"2026-06-16T11:40:05Z","symbol":"NIM1040536","token_address":"0xb2bf3b90237cf13939eef16c77e310dedd8e1942","type":"artist","uuid":"3f7f65e9-88dd-44a3-b77d-7786799e0baa"}
album: E Seu Super Sax
  type: MusicAlbum
  date published: 1986