Juan Carmona
type: MusicGroup
description: Juan Carmona (15 February 1932 – 3 September 2005) was a Chilean rower. He competed in the men's coxed pair event at the 1956 Summer Olympics. References Category:1932 births Category:2005 deaths Ca
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2e2764825cf0c9b7104bdcd715905e79d210dec080bcdb03b0cd92f0226a683
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954062
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954062
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/465ed3a8-e04a-4b3f-9679-5c1ea35881a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/465ed3a8-e04a-4b3f-9679-5c1ea35881a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/465ed3a8-e04a-4b3f-9679-5c1ea35881a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:39:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2e2764825cf0c9b7104bdcd715905e79d210dec080bcdb03b0cd92f0226a683","name":"Juan Carmona","registered_at":"2026-06-16T14:04:43Z","symbol":"NIM1075026","token_address":"0xad12ca30804d099377bbde93b7469c8a5ae779b5","type":"artist","uuid":"465ed3a8-e04a-4b3f-9679-5c1ea35881a4"}
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 0xa2e2764825cf0c9b7104bdcd715905e79d210dec080bcdb03b0cd92f0226a683. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/465ed3a8-e04a-4b3f-9679-5c1ea35881a4.json and https://artists.proofprofile.net/proofs/artist/465ed3a8-e04a-4b3f-9679-5c1ea35881a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T07:49:29Z
  text: {"copyright_id":"0xa2e2764825cf0c9b7104bdcd715905e79d210dec080bcdb03b0cd92f0226a683","name":"Juan Carmona","registered_at":"2026-06-16T14:04:43Z","symbol":"NIM1075026","token_address":"0xad12ca30804d099377bbde93b7469c8a5ae779b5","type":"artist","uuid":"465ed3a8-e04a-4b3f-9679-5c1ea35881a4"}