Kovács Barbara
type: MusicGroup
popularity: 9
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d63b62ffdde35ca12347c159e10d1b37dd6609b81fc608c642916e1e778c91b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953886
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953886
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0aea2221-b33c-4d00-9eef-3caeb64a32fe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0aea2221-b33c-4d00-9eef-3caeb64a32fe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0aea2221-b33c-4d00-9eef-3caeb64a32fe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:37:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4d63b62ffdde35ca12347c159e10d1b37dd6609b81fc608c642916e1e778c91b","name":"Kovács Barbara","registered_at":"2026-06-15T17:22:14Z","symbol":"NIM0778483","token_address":"0xb8033a2874452effa94cec5caf54dc6707bc548c","type":"artist","uuid":"0aea2221-b33c-4d00-9eef-3caeb64a32fe"}
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 0x4d63b62ffdde35ca12347c159e10d1b37dd6609b81fc608c642916e1e778c91b. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0aea2221-b33c-4d00-9eef-3caeb64a32fe.json and https://artists.proofprofile.net/proofs/artist/0aea2221-b33c-4d00-9eef-3caeb64a32fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:37:45Z
  text: {"copyright_id":"0x4d63b62ffdde35ca12347c159e10d1b37dd6609b81fc608c642916e1e778c91b","name":"Kovács Barbara","registered_at":"2026-06-15T17:22:14Z","symbol":"NIM0778483","token_address":"0xb8033a2874452effa94cec5caf54dc6707bc548c","type":"artist","uuid":"0aea2221-b33c-4d00-9eef-3caeb64a32fe"}