Tereza Kramerová a Karel Chodora
type: MusicGroup
popularity: 5
followers: 545
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04a837c9658913746ef246819f767cf4b65c94c7aba92600f8c77570aa03f920
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04a837c9658913746ef246819f767cf4b65c94c7aba92600f8c77570aa03f920","name":"Tereza Kramerová a Karel Chodora","registered_at":"2026-06-20T15:03:33Z","symbol":"NIM1639668","token_address":"0x3dfa4e0bf69c6198e8969a5a26e9b055b006004d","type":"artist","uuid":"b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac"}
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 0x04a837c9658913746ef246819f767cf4b65c94c7aba92600f8c77570aa03f920. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac.json and https://artists.proofprofile.net/proofs/artist/b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0x04a837c9658913746ef246819f767cf4b65c94c7aba92600f8c77570aa03f920","name":"Tereza Kramerová a Karel Chodora","registered_at":"2026-06-20T15:03:33Z","symbol":"NIM1639668","token_address":"0x3dfa4e0bf69c6198e8969a5a26e9b055b006004d","type":"artist","uuid":"b7183ba2-e5c8-4ba6-8d3d-de6d89f9feac"}
album: Oceánem hvězd
  type: MusicAlbum
  date published: 2022-03-02