César Muñoz
type: MusicGroup
description: César Muñoz Vicuña (1929–2000) was an Ecuadorian chess master. An amateur, he was an engineer by profession. He played for Ecuador at first board in the fourth World Student Team Chess Championship
popularity: 3
followers: 702
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99d849a3a8b2ea13dab3ce5350d8d9621e5c5d1b85eb7526f0399dce00c603ac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ce9a321d-a866-4ec9-b723-d7a436be42d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ce9a321d-a866-4ec9-b723-d7a436be42d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ce9a321d-a866-4ec9-b723-d7a436be42d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x99d849a3a8b2ea13dab3ce5350d8d9621e5c5d1b85eb7526f0399dce00c603ac","name":"César Muñoz","registered_at":"2026-06-21T00:14:36Z","symbol":"NIM1760117","token_address":"0x24323850898c04b2518ace84e1e03c0957a8efa2","type":"artist","uuid":"ce9a321d-a866-4ec9-b723-d7a436be42d8"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d849a3a8b2ea13dab3ce5350d8d9621e5c5d1b85eb7526f0399dce00c603ac. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce9a321d-a866-4ec9-b723-d7a436be42d8.json and https://artists.proofprofile.net/proofs/artist/ce9a321d-a866-4ec9-b723-d7a436be42d8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x99d849a3a8b2ea13dab3ce5350d8d9621e5c5d1b85eb7526f0399dce00c603ac","name":"César Muñoz","registered_at":"2026-06-21T00:14:36Z","symbol":"NIM1760117","token_address":"0x24323850898c04b2518ace84e1e03c0957a8efa2","type":"artist","uuid":"ce9a321d-a866-4ec9-b723-d7a436be42d8"}
album: Chiquiticos, Vol. 2
  type: MusicAlbum
  date published: 2002-08-21
album: Chiquiticos, Vol. 1
  type: MusicAlbum
  date published: 2002-08-30
album: Festejo de Luz
  type: MusicAlbum
  date published: 2024-05-24