Sergio Villar
type: MusicGroup
description: Sergio Bismarck Villar (born 5 January 1944) is a Uruguayan former footballer who played as a left back. He played most of his career for San Lorenzo de Almagro in Argentina. Villar started his caree
popularity: 2
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21360f4d64253c4efae133c663232cf06a03467677c3beb4a41fe7c5a78667f0
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/e00e0279-de90-4b29-876b-8342dbb445a1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e00e0279-de90-4b29-876b-8342dbb445a1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e00e0279-de90-4b29-876b-8342dbb445a1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x21360f4d64253c4efae133c663232cf06a03467677c3beb4a41fe7c5a78667f0","name":"Sergio Villar","registered_at":"2026-06-21T06:11:55Z","symbol":"NIM1844081","token_address":"0xa618642ebfdf0f3f95136d8d84d0b5f6fb64cb3b","type":"artist","uuid":"e00e0279-de90-4b29-876b-8342dbb445a1"}
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 0x21360f4d64253c4efae133c663232cf06a03467677c3beb4a41fe7c5a78667f0. 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/e00e0279-de90-4b29-876b-8342dbb445a1.json and https://artists.proofprofile.net/proofs/artist/e00e0279-de90-4b29-876b-8342dbb445a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x21360f4d64253c4efae133c663232cf06a03467677c3beb4a41fe7c5a78667f0","name":"Sergio Villar","registered_at":"2026-06-21T06:11:55Z","symbol":"NIM1844081","token_address":"0xa618642ebfdf0f3f95136d8d84d0b5f6fb64cb3b","type":"artist","uuid":"e00e0279-de90-4b29-876b-8342dbb445a1"}
album: Vida
  type: MusicAlbum
  date published: 2017-10-05