Oldřich Kovář
type: MusicGroup
popularity: 2
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d89ba54cddf5f5fbf4e2b017c7d868525f8e69f6e6470008cec993b8ab74f92
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc4a5a56-c1a2-4aba-9752-1ebf19128239.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc4a5a56-c1a2-4aba-9752-1ebf19128239.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bc4a5a56-c1a2-4aba-9752-1ebf19128239
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8d89ba54cddf5f5fbf4e2b017c7d868525f8e69f6e6470008cec993b8ab74f92","name":"Oldřich Kovář","registered_at":"2026-06-20T17:22:15Z","symbol":"NIM1665553","token_address":"0x394c7b4aa0540954c6efded9a5f363dcd37a6c25","type":"artist","uuid":"bc4a5a56-c1a2-4aba-9752-1ebf19128239"}
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 0x8d89ba54cddf5f5fbf4e2b017c7d868525f8e69f6e6470008cec993b8ab74f92. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc4a5a56-c1a2-4aba-9752-1ebf19128239.json and https://artists.proofprofile.net/proofs/artist/bc4a5a56-c1a2-4aba-9752-1ebf19128239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
  text: {"copyright_id":"0x8d89ba54cddf5f5fbf4e2b017c7d868525f8e69f6e6470008cec993b8ab74f92","name":"Oldřich Kovář","registered_at":"2026-06-20T17:22:15Z","symbol":"NIM1665553","token_address":"0x394c7b4aa0540954c6efded9a5f363dcd37a6c25","type":"artist","uuid":"bc4a5a56-c1a2-4aba-9752-1ebf19128239"}
album: Láska brány otevírá
  type: MusicAlbum
  date published: 1993-01-01
album: Czech/Slovak Retro Music / Oldřich Kovář, Volume 2
  type: MusicAlbum
  date published: 2012-10-05
album: Czech/Slovak Retro Music / Oldřich Kovář, Volume 1
  type: MusicAlbum
  date published: 2012-10-05
album: Czech/Slovak Retro Music / Oldřich Kovář, Volume 3
  type: MusicAlbum
  date published: 2012-10-05
album: Czech/Slovak Retro Music / Oldřich Kovář, Volume 4
  type: MusicAlbum
  date published: 2012-10-06
album: Czech/Slovak Retro Music / Oldřich Kovář, Volume 5
  type: MusicAlbum
  date published: 2012-10-07