Luís Cardoso
type: MusicGroup
description: Luís Cardoso de Noronha (born 8 December 1958) is a contemporary East Timorese writer. His work focuses on the history of his homeland. It is written in Portuguese, and has been translated into other
popularity: 2
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8eaabe159b7690521d7e860239eef965ad0921ef3b20b6262be57bcb00be90ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b82ec9d3-99c1-4d47-a671-bb03641de463.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b82ec9d3-99c1-4d47-a671-bb03641de463.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b82ec9d3-99c1-4d47-a671-bb03641de463
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8eaabe159b7690521d7e860239eef965ad0921ef3b20b6262be57bcb00be90ad","name":"Luís Cardoso","registered_at":"2026-06-20T16:00:19Z","symbol":"NIM1647658","token_address":"0xc4577ad83728d3b54d0e8d58d682d413906536ba","type":"artist","uuid":"b82ec9d3-99c1-4d47-a671-bb03641de463"}
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 0x8eaabe159b7690521d7e860239eef965ad0921ef3b20b6262be57bcb00be90ad. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b82ec9d3-99c1-4d47-a671-bb03641de463.json and https://artists.proofprofile.net/proofs/artist/b82ec9d3-99c1-4d47-a671-bb03641de463.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x8eaabe159b7690521d7e860239eef965ad0921ef3b20b6262be57bcb00be90ad","name":"Luís Cardoso","registered_at":"2026-06-20T16:00:19Z","symbol":"NIM1647658","token_address":"0xc4577ad83728d3b54d0e8d58d682d413906536ba","type":"artist","uuid":"b82ec9d3-99c1-4d47-a671-bb03641de463"}