Франц Кафка
type: MusicGroup
popularity: 3
followers: 65
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf7da8f9d736fa0e357511fae8ed8e1da1a5b6a05d0aaf73813f3310fce537e8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1d85661-78e2-4cbc-83d5-fb7575e8c72e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1d85661-78e2-4cbc-83d5-fb7575e8c72e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f1d85661-78e2-4cbc-83d5-fb7575e8c72e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf7da8f9d736fa0e357511fae8ed8e1da1a5b6a05d0aaf73813f3310fce537e8","name":"Франц Кафка","registered_at":"2026-06-21T13:31:37Z","symbol":"NIM1935913","token_address":"0x2842b1eb290563a9a6450dca749c8760c2d4c7d4","type":"artist","uuid":"f1d85661-78e2-4cbc-83d5-fb7575e8c72e"}
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 0xaf7da8f9d736fa0e357511fae8ed8e1da1a5b6a05d0aaf73813f3310fce537e8. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1d85661-78e2-4cbc-83d5-fb7575e8c72e.json and https://artists.proofprofile.net/proofs/artist/f1d85661-78e2-4cbc-83d5-fb7575e8c72e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xaf7da8f9d736fa0e357511fae8ed8e1da1a5b6a05d0aaf73813f3310fce537e8","name":"Франц Кафка","registered_at":"2026-06-21T13:31:37Z","symbol":"NIM1935913","token_address":"0x2842b1eb290563a9a6450dca749c8760c2d4c7d4","type":"artist","uuid":"f1d85661-78e2-4cbc-83d5-fb7575e8c72e"}
album: Пропавший без вести
  type: MusicAlbum
  date published: 2022-05-04
album: Процесс
  type: MusicAlbum
  date published: 2023-10-05
album: Письма к Милене
  type: MusicAlbum
  date published: 2024-07-04