Helvio Marques
type: MusicGroup
genre: kizomba
popularity: 9
followers: 214
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x962b9dd9eedebbcc0b029daf1961fc2ccc35ae100f11c3cce8c481819d1b098c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954004
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954004
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32bb4ce4-7357-4c6e-828b-33e209b03aff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32bb4ce4-7357-4c6e-828b-33e209b03aff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/32bb4ce4-7357-4c6e-828b-33e209b03aff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:01:04Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x962b9dd9eedebbcc0b029daf1961fc2ccc35ae100f11c3cce8c481819d1b098c","name":"Helvio Marques","registered_at":"2026-06-16T07:12:47Z","symbol":"NIM0976738","token_address":"0x9593bd7fb75132e099a0a39aff7ee4fac2158e42","type":"artist","uuid":"32bb4ce4-7357-4c6e-828b-33e209b03aff"}
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 0x962b9dd9eedebbcc0b029daf1961fc2ccc35ae100f11c3cce8c481819d1b098c. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32bb4ce4-7357-4c6e-828b-33e209b03aff.json and https://artists.proofprofile.net/proofs/artist/32bb4ce4-7357-4c6e-828b-33e209b03aff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x962b9dd9eedebbcc0b029daf1961fc2ccc35ae100f11c3cce8c481819d1b098c","name":"Helvio Marques","registered_at":"2026-06-16T07:12:47Z","symbol":"NIM0976738","token_address":"0x9593bd7fb75132e099a0a39aff7ee4fac2158e42","type":"artist","uuid":"32bb4ce4-7357-4c6e-828b-33e209b03aff"}