Barbora Cihak
type: MusicGroup
popularity: 4
followers: 299
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc0d1ede41a492b5b5684539d6d37256b4ad0d2eb3cd169e3e5238e81ec1f896b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c198f10f-6b82-4818-a81d-7cfe04f7b43d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c198f10f-6b82-4818-a81d-7cfe04f7b43d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c198f10f-6b82-4818-a81d-7cfe04f7b43d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc0d1ede41a492b5b5684539d6d37256b4ad0d2eb3cd169e3e5238e81ec1f896b","name":"Barbora Cihak","registered_at":"2026-06-20T19:17:56Z","symbol":"NIM1692207","token_address":"0x023e76a6531c7b3f7ff31cb303b8f9c5baf89c15","type":"artist","uuid":"c198f10f-6b82-4818-a81d-7cfe04f7b43d"}
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 0xc0d1ede41a492b5b5684539d6d37256b4ad0d2eb3cd169e3e5238e81ec1f896b. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c198f10f-6b82-4818-a81d-7cfe04f7b43d.json and https://artists.proofprofile.net/proofs/artist/c198f10f-6b82-4818-a81d-7cfe04f7b43d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xc0d1ede41a492b5b5684539d6d37256b4ad0d2eb3cd169e3e5238e81ec1f896b","name":"Barbora Cihak","registered_at":"2026-06-20T19:17:56Z","symbol":"NIM1692207","token_address":"0x023e76a6531c7b3f7ff31cb303b8f9c5baf89c15","type":"artist","uuid":"c198f10f-6b82-4818-a81d-7cfe04f7b43d"}
album: Every Night
  type: MusicAlbum
  date published: 2021-08-13
album: Time And Fate
  type: MusicAlbum
  date published: 2022-01-02
album: I. P. Pavlova - cover
  type: MusicAlbum
  date published: 2022-07-15
album: Down
  type: MusicAlbum
  date published: 2022-07-29
album: Krvavý Pěsti
  type: MusicAlbum
  date published: 2022-12-02
album: Se Zimou To Končí
  type: MusicAlbum
  date published: 2023-03-10
album: Gutter Song
  type: MusicAlbum
  date published: 2023-04-28
album: Dig It Up
  type: MusicAlbum
  date published: 2023-09-22