Katarina OST
type: MusicGroup
popularity: 9
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcdc3c13cabd613c3459c502a42b04b646e88e51051935d11948cef6c8323cc59
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f13cd1af-e012-4719-9788-f190a3d31f09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f13cd1af-e012-4719-9788-f190a3d31f09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f13cd1af-e012-4719-9788-f190a3d31f09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcdc3c13cabd613c3459c502a42b04b646e88e51051935d11948cef6c8323cc59","name":"Katarina OST","registered_at":"2026-06-21T13:18:45Z","symbol":"NIM1932860","token_address":"0x3112fde3c6d3ed3d1cd9c5a1344c56a1938fa6d1","type":"artist","uuid":"f13cd1af-e012-4719-9788-f190a3d31f09"}
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 0xcdc3c13cabd613c3459c502a42b04b646e88e51051935d11948cef6c8323cc59. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13cd1af-e012-4719-9788-f190a3d31f09.json and https://artists.proofprofile.net/proofs/artist/f13cd1af-e012-4719-9788-f190a3d31f09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xcdc3c13cabd613c3459c502a42b04b646e88e51051935d11948cef6c8323cc59","name":"Katarina OST","registered_at":"2026-06-21T13:18:45Z","symbol":"NIM1932860","token_address":"0x3112fde3c6d3ed3d1cd9c5a1344c56a1938fa6d1","type":"artist","uuid":"f13cd1af-e012-4719-9788-f190a3d31f09"}
album: Лучший сюжет
  type: MusicAlbum
  date published: 2025-07-25
album: Катастрофа
  type: MusicAlbum
  date published: 2025-08-07
album: Взлетай
  type: MusicAlbum
  date published: 2025-09-12