Julio Cortázar
type: MusicGroup
description: Julio Florencio CortázarMontes-Bradley, Eduardo. "Cortázar sin barba". Editorial Debate. Random House Mondadori. p. 35, Madrid. 2005. (26 August 1914 – 12 February 1984; ) was an Argentine and natural
popularity: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ddb36139fb4018814d1e1490338fe673d65cd64b9b906d48184e78ef0ffb74e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b73eb04-45f6-429d-ae49-1c42b601acb9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b73eb04-45f6-429d-ae49-1c42b601acb9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b73eb04-45f6-429d-ae49-1c42b601acb9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9ddb36139fb4018814d1e1490338fe673d65cd64b9b906d48184e78ef0ffb74e","name":"Julio Cortázar","registered_at":"2026-06-15T23:08:42Z","symbol":"NIM0861116","token_address":"0x9c84e68b63ed89dac4ff0079c691e81a44cb38f0","type":"artist","uuid":"1b73eb04-45f6-429d-ae49-1c42b601acb9"}
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 0x9ddb36139fb4018814d1e1490338fe673d65cd64b9b906d48184e78ef0ffb74e. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b73eb04-45f6-429d-ae49-1c42b601acb9.json and https://artists.proofprofile.net/proofs/artist/1b73eb04-45f6-429d-ae49-1c42b601acb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:36:34Z
  text: {"copyright_id":"0x9ddb36139fb4018814d1e1490338fe673d65cd64b9b906d48184e78ef0ffb74e","name":"Julio Cortázar","registered_at":"2026-06-15T23:08:42Z","symbol":"NIM0861116","token_address":"0x9c84e68b63ed89dac4ff0079c691e81a44cb38f0","type":"artist","uuid":"1b73eb04-45f6-429d-ae49-1c42b601acb9"}