Petr Jirák
type: MusicGroup
popularity: 2
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0699fe55318f5f0115ba282eb65ea446bc55316da9d8f1710fb73a415fca2775
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953888
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953888
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d127add-ca6b-4d7a-a13f-d657f2f77565.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d127add-ca6b-4d7a-a13f-d657f2f77565.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0d127add-ca6b-4d7a-a13f-d657f2f77565
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:55:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0699fe55318f5f0115ba282eb65ea446bc55316da9d8f1710fb73a415fca2775","name":"Petr Jirák","registered_at":"2026-06-15T18:07:16Z","symbol":"NIM0789220","token_address":"0xbf38add933569180f2a7e57114bec2097c2de6a4","type":"artist","uuid":"0d127add-ca6b-4d7a-a13f-d657f2f77565"}
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 0x0699fe55318f5f0115ba282eb65ea446bc55316da9d8f1710fb73a415fca2775. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d127add-ca6b-4d7a-a13f-d657f2f77565.json and https://artists.proofprofile.net/proofs/artist/0d127add-ca6b-4d7a-a13f-d657f2f77565.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:55:23Z
  text: {"copyright_id":"0x0699fe55318f5f0115ba282eb65ea446bc55316da9d8f1710fb73a415fca2775","name":"Petr Jirák","registered_at":"2026-06-15T18:07:16Z","symbol":"NIM0789220","token_address":"0xbf38add933569180f2a7e57114bec2097c2de6a4","type":"artist","uuid":"0d127add-ca6b-4d7a-a13f-d657f2f77565"}