Josef Plíva
type: MusicGroup
genre: baroque pop
genre: big beat
popularity: 3
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x561fd26f344e18d7039c6a5f233fb1a0b4b3bc1824cd1608d894c6a601e2ac6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fbacf297-7bad-4f51-b779-8d1030745ab2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fbacf297-7bad-4f51-b779-8d1030745ab2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fbacf297-7bad-4f51-b779-8d1030745ab2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x561fd26f344e18d7039c6a5f233fb1a0b4b3bc1824cd1608d894c6a601e2ac6e","name":"Josef Plíva","registered_at":"2026-06-21T17:13:09Z","symbol":"NIM1983000","token_address":"0x58075b576d42dc1b561c44c1f3a357be579f82d4","type":"artist","uuid":"fbacf297-7bad-4f51-b779-8d1030745ab2"}
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 0x561fd26f344e18d7039c6a5f233fb1a0b4b3bc1824cd1608d894c6a601e2ac6e. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbacf297-7bad-4f51-b779-8d1030745ab2.json and https://artists.proofprofile.net/proofs/artist/fbacf297-7bad-4f51-b779-8d1030745ab2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0x561fd26f344e18d7039c6a5f233fb1a0b4b3bc1824cd1608d894c6a601e2ac6e","name":"Josef Plíva","registered_at":"2026-06-21T17:13:09Z","symbol":"NIM1983000","token_address":"0x58075b576d42dc1b561c44c1f3a357be579f82d4","type":"artist","uuid":"fbacf297-7bad-4f51-b779-8d1030745ab2"}
album: Fairy Tales in Beat
  type: MusicAlbum
  date published: 1969