Calvin Fernandez
type: MusicGroup
description: Calvin Fernandez (born 18 November 1974) is a Malaysian field hockey player. He competed at the 1996 Summer Olympics and the 2000 Summer Olympics. References External links Category:1974 births C
popularity: 22
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb276ea38b9bc7b7c269ad83d6c8cc9d26044688fbc8ca1cb83479b146fc58b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f7e3527-d95b-453b-b223-11617b805ac3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f7e3527-d95b-453b-b223-11617b805ac3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f7e3527-d95b-453b-b223-11617b805ac3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb276ea38b9bc7b7c269ad83d6c8cc9d26044688fbc8ca1cb83479b146fc58b3","name":"Calvin Fernandez","registered_at":"2026-06-12T05:54:31Z","symbol":"NIM0206691","token_address":"0xfe1f5dc7808dbd2d805d71c2f3258d8f2afa4884","type":"artist","uuid":"9f7e3527-d95b-453b-b223-11617b805ac3"}
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 0xcb276ea38b9bc7b7c269ad83d6c8cc9d26044688fbc8ca1cb83479b146fc58b3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f7e3527-d95b-453b-b223-11617b805ac3.json and https://artists.proofprofile.net/proofs/artist/9f7e3527-d95b-453b-b223-11617b805ac3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xcb276ea38b9bc7b7c269ad83d6c8cc9d26044688fbc8ca1cb83479b146fc58b3","name":"Calvin Fernandez","registered_at":"2026-06-12T05:54:31Z","symbol":"NIM0206691","token_address":"0xfe1f5dc7808dbd2d805d71c2f3258d8f2afa4884","type":"artist","uuid":"9f7e3527-d95b-453b-b223-11617b805ac3"}