Jan Cina
type: MusicGroup
description: Jan Cina (born 20 March 1988) is a Czech actor and singer of Romani descent. He has an acclaimed career as a dancer, actor and vocalist in the Czech Republic. Biography Cina, a Prague native, was b
popularity: 23
followers: 235
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x96bead430b4569e8831482a867fb49934a3082e80e50fbeda18b26e87d61c374
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/98484148-eb19-4948-84f9-a647ea1e7216.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98484148-eb19-4948-84f9-a647ea1e7216.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/98484148-eb19-4948-84f9-a647ea1e7216
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x96bead430b4569e8831482a867fb49934a3082e80e50fbeda18b26e87d61c374","name":"Jan Cina","registered_at":"2026-06-12T05:14:54Z","symbol":"NIM0197559","token_address":"0x3aa4fcc5c28152976f7377c05a7349d66d916fd2","type":"artist","uuid":"98484148-eb19-4948-84f9-a647ea1e7216"}
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 0x96bead430b4569e8831482a867fb49934a3082e80e50fbeda18b26e87d61c374. 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/98484148-eb19-4948-84f9-a647ea1e7216.json and https://artists.proofprofile.net/proofs/artist/98484148-eb19-4948-84f9-a647ea1e7216.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x96bead430b4569e8831482a867fb49934a3082e80e50fbeda18b26e87d61c374","name":"Jan Cina","registered_at":"2026-06-12T05:14:54Z","symbol":"NIM0197559","token_address":"0x3aa4fcc5c28152976f7377c05a7349d66d916fd2","type":"artist","uuid":"98484148-eb19-4948-84f9-a647ea1e7216"}