Nuno Pólvora
type: MusicGroup
popularity: 10
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x76a3959d9ed899ac274d1636adb1774946e22158f52e77bc9fbea42c9ee8274d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb2c5065-6c18-4eb1-81b1-a823b6893566.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb2c5065-6c18-4eb1-81b1-a823b6893566.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cb2c5065-6c18-4eb1-81b1-a823b6893566
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x76a3959d9ed899ac274d1636adb1774946e22158f52e77bc9fbea42c9ee8274d","name":"Nuno Pólvora","registered_at":"2026-06-20T22:47:42Z","symbol":"NIM1738389","token_address":"0x9f625336c02e5b80e55ac7dfd54f79d50d334f3e","type":"artist","uuid":"cb2c5065-6c18-4eb1-81b1-a823b6893566"}
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 0x76a3959d9ed899ac274d1636adb1774946e22158f52e77bc9fbea42c9ee8274d. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb2c5065-6c18-4eb1-81b1-a823b6893566.json and https://artists.proofprofile.net/proofs/artist/cb2c5065-6c18-4eb1-81b1-a823b6893566.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x76a3959d9ed899ac274d1636adb1774946e22158f52e77bc9fbea42c9ee8274d","name":"Nuno Pólvora","registered_at":"2026-06-20T22:47:42Z","symbol":"NIM1738389","token_address":"0x9f625336c02e5b80e55ac7dfd54f79d50d334f3e","type":"artist","uuid":"cb2c5065-6c18-4eb1-81b1-a823b6893566"}