Sergio Villagra
type: MusicGroup
description: Sergio Rodrigo Villagra (born 11 October 1973) is an Australian rules football goal umpire who has officiated in the Australian Football League since 2002. Early life Villagra immigrated to Australia
popularity: 2
followers: 350
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9de1461e53d3a0183acc1b6890cf9ba70c55cd5cf6736bf77999b77e0e76cbdc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f69057a-f9d8-4b2f-8a66-fa409518a731.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f69057a-f9d8-4b2f-8a66-fa409518a731.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f69057a-f9d8-4b2f-8a66-fa409518a731
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9de1461e53d3a0183acc1b6890cf9ba70c55cd5cf6736bf77999b77e0e76cbdc","name":"Sergio Villagra","registered_at":"2026-06-17T10:01:01Z","symbol":"NIM1360428","token_address":"0xf69f2eac32adeaa758933071873670b3b10ec60f","type":"artist","uuid":"7f69057a-f9d8-4b2f-8a66-fa409518a731"}
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 0x9de1461e53d3a0183acc1b6890cf9ba70c55cd5cf6736bf77999b77e0e76cbdc. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f69057a-f9d8-4b2f-8a66-fa409518a731.json and https://artists.proofprofile.net/proofs/artist/7f69057a-f9d8-4b2f-8a66-fa409518a731.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x9de1461e53d3a0183acc1b6890cf9ba70c55cd5cf6736bf77999b77e0e76cbdc","name":"Sergio Villagra","registered_at":"2026-06-17T10:01:01Z","symbol":"NIM1360428","token_address":"0xf69f2eac32adeaa758933071873670b3b10ec60f","type":"artist","uuid":"7f69057a-f9d8-4b2f-8a66-fa409518a731"}
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