Luís Graça
type: MusicGroup
description: Luís Miguel da Graça Nunes (born 16 August 1972) is a Portuguese politician serving as a member of the Assembly of the Republic since 2015. From 2017 to 2021, he served as chairman of the municipal co
popularity: 2
followers: 299
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa4f12f823ffe6a23f7b3a36f1bc2b57d5852c89a141a35485177fb997fc3ff4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/653072eb-761b-4c8c-aac8-4def73216dff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/653072eb-761b-4c8c-aac8-4def73216dff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/653072eb-761b-4c8c-aac8-4def73216dff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfa4f12f823ffe6a23f7b3a36f1bc2b57d5852c89a141a35485177fb997fc3ff4","name":"Luís Graça","registered_at":"2026-06-17T01:16:44Z","symbol":"NIM1235364","token_address":"0x60a6254d191cbb9b98a86bf389c5b909f649ebe7","type":"artist","uuid":"653072eb-761b-4c8c-aac8-4def73216dff"}
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 0xfa4f12f823ffe6a23f7b3a36f1bc2b57d5852c89a141a35485177fb997fc3ff4. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/653072eb-761b-4c8c-aac8-4def73216dff.json and https://artists.proofprofile.net/proofs/artist/653072eb-761b-4c8c-aac8-4def73216dff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xfa4f12f823ffe6a23f7b3a36f1bc2b57d5852c89a141a35485177fb997fc3ff4","name":"Luís Graça","registered_at":"2026-06-17T01:16:44Z","symbol":"NIM1235364","token_address":"0x60a6254d191cbb9b98a86bf389c5b909f649ebe7","type":"artist","uuid":"653072eb-761b-4c8c-aac8-4def73216dff"}
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