Katja Rostowski
type: MusicGroup
popularity: 15
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xda9e25a6054899edeba792a75d1d8d6b2e7a52a93ac279de60e333827259f740
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8a79b92-79d3-41cd-9eb8-c67838e88165.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8a79b92-79d3-41cd-9eb8-c67838e88165.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e8a79b92-79d3-41cd-9eb8-c67838e88165
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xda9e25a6054899edeba792a75d1d8d6b2e7a52a93ac279de60e333827259f740","name":"Katja Rostowski","registered_at":"2026-06-15T04:58:34Z","symbol":"NIM0689293","token_address":"0x741ec04b67437da931fdfc9444465696f55684c0","type":"artist","uuid":"e8a79b92-79d3-41cd-9eb8-c67838e88165"}
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 0xda9e25a6054899edeba792a75d1d8d6b2e7a52a93ac279de60e333827259f740. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8a79b92-79d3-41cd-9eb8-c67838e88165.json and https://artists.proofprofile.net/proofs/artist/e8a79b92-79d3-41cd-9eb8-c67838e88165.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0xda9e25a6054899edeba792a75d1d8d6b2e7a52a93ac279de60e333827259f740","name":"Katja Rostowski","registered_at":"2026-06-15T04:58:34Z","symbol":"NIM0689293","token_address":"0x741ec04b67437da931fdfc9444465696f55684c0","type":"artist","uuid":"e8a79b92-79d3-41cd-9eb8-c67838e88165"}
album: Trapped in Blood and Claws
  type: MusicAlbum
  date published: 2024-12-02
album: Trapped in Blood and Bones
  type: MusicAlbum
  date published: 2024-12-02
album: Rule The Darkness
  type: MusicAlbum
  date published: 2025-01-15