Ladislav Pazdera
type: MusicGroup
description: Ladislav Pazdera (6 December 1936 – 19 December 2022) was a Czech gymnast. He competed at the 1960 Summer Olympics and the 1964 Summer Olympics. Pazdera died on 19 December 2022, at the age of 86. R
popularity: 5
followers: 127
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x507757994a16866efb5e15cd20c1597ec19a4afc6ec59af7a107d724b8431542
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/79f736c8-87eb-4df0-a48c-ffdbf2daf97c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/79f736c8-87eb-4df0-a48c-ffdbf2daf97c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/79f736c8-87eb-4df0-a48c-ffdbf2daf97c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x507757994a16866efb5e15cd20c1597ec19a4afc6ec59af7a107d724b8431542","name":"Ladislav Pazdera","registered_at":"2026-06-17T08:06:24Z","symbol":"NIM1333100","token_address":"0x99a49d4befac14f975a8c5af7a04124ab81a4926","type":"artist","uuid":"79f736c8-87eb-4df0-a48c-ffdbf2daf97c"}
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 0x507757994a16866efb5e15cd20c1597ec19a4afc6ec59af7a107d724b8431542. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79f736c8-87eb-4df0-a48c-ffdbf2daf97c.json and https://artists.proofprofile.net/proofs/artist/79f736c8-87eb-4df0-a48c-ffdbf2daf97c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x507757994a16866efb5e15cd20c1597ec19a4afc6ec59af7a107d724b8431542","name":"Ladislav Pazdera","registered_at":"2026-06-17T08:06:24Z","symbol":"NIM1333100","token_address":"0x99a49d4befac14f975a8c5af7a04124ab81a4926","type":"artist","uuid":"79f736c8-87eb-4df0-a48c-ffdbf2daf97c"}
album: Just the Two of Us
  type: MusicAlbum
  date published: 2023-05-18
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  type: MusicAlbum
  date published: 2023-06-01
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  type: MusicAlbum
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