Kafka.
type: MusicGroup
genre: emocore
genre: screamo
popularity: 3
followers: 299
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf48943d70bc823f7d1b4b8ac933ac0ecc2bc16278615c110e989d8298d9de6c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdcaf6b0-8edd-4208-b36e-be498d86c236.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdcaf6b0-8edd-4208-b36e-be498d86c236.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdcaf6b0-8edd-4208-b36e-be498d86c236
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
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 0xf48943d70bc823f7d1b4b8ac933ac0ecc2bc16278615c110e989d8298d9de6c9. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdcaf6b0-8edd-4208-b36e-be498d86c236.json and https://artists.proofprofile.net/proofs/artist/fdcaf6b0-8edd-4208-b36e-be498d86c236.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
album: Demo
  type: MusicAlbum
  date published: 2018-05-03
album: Partir et découvrir
  type: MusicAlbum
  date published: 2019-02-17
album: Split
  type: MusicAlbum
  date published: 2020-04-12
album: Nejsme sami
  type: MusicAlbum
  date published: 2021-01-31
album: Na rozhraní z​á​bavy a života
  type: MusicAlbum
  date published: 2023-07-31
album: Všude dobře, doma nejlíp
  type: MusicAlbum
  date published: 2025-07-08