Alžběta Poláčková
type: MusicGroup
genre: opera
popularity: 4
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7f9de64cbc5bbeb04c7621be781473a349d9647cae6c33e6383ce3f3fa6bbd2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7f9de64cbc5bbeb04c7621be781473a349d9647cae6c33e6383ce3f3fa6bbd2","name":"Alžběta Poláčková","registered_at":"2026-06-15T17:54:31Z","symbol":"NIM0786185","token_address":"0xa2339dfd7918205c0bf1c6c0e8d6e99f2b3332a2","type":"artist","uuid":"0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5"}
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 0xb7f9de64cbc5bbeb04c7621be781473a349d9647cae6c33e6383ce3f3fa6bbd2. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5.json and https://artists.proofprofile.net/proofs/artist/0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:12:47Z
  text: {"copyright_id":"0xb7f9de64cbc5bbeb04c7621be781473a349d9647cae6c33e6383ce3f3fa6bbd2","name":"Alžběta Poláčková","registered_at":"2026-06-15T17:54:31Z","symbol":"NIM0786185","token_address":"0xa2339dfd7918205c0bf1c6c0e8d6e99f2b3332a2","type":"artist","uuid":"0bf7ce8d-f083-4c8d-840f-07b30d0e0bc5"}