Rosa Fernández
type: MusicGroup
description: Rosa Fernández (born 7 October 1957) is a retired Cuban athlete who specialised in the shot put. She won multiple medals at regional level. In 1983 she was disqualified for doping and her silver medal
popularity: 8
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca57014976a450ca2a47d0a88748762323df6f8cd376ec131f59fa31ceb81709
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9c7279e-3693-44ea-855a-26ac65d0db8c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9c7279e-3693-44ea-855a-26ac65d0db8c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a9c7279e-3693-44ea-855a-26ac65d0db8c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xca57014976a450ca2a47d0a88748762323df6f8cd376ec131f59fa31ceb81709","name":"Rosa Fernández","registered_at":"2026-06-20T09:08:22Z","symbol":"NIM1574266","token_address":"0xa8a50740bf55bcbcd6f90072fb3c24152e2ebc34","type":"artist","uuid":"a9c7279e-3693-44ea-855a-26ac65d0db8c"}
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 0xca57014976a450ca2a47d0a88748762323df6f8cd376ec131f59fa31ceb81709. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9c7279e-3693-44ea-855a-26ac65d0db8c.json and https://artists.proofprofile.net/proofs/artist/a9c7279e-3693-44ea-855a-26ac65d0db8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xca57014976a450ca2a47d0a88748762323df6f8cd376ec131f59fa31ceb81709","name":"Rosa Fernández","registered_at":"2026-06-20T09:08:22Z","symbol":"NIM1574266","token_address":"0xa8a50740bf55bcbcd6f90072fb3c24152e2ebc34","type":"artist","uuid":"a9c7279e-3693-44ea-855a-26ac65d0db8c"}