Matej Starkov
type: MusicGroup
popularity: 14
followers: 99
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x19c64c1a58c87804d322f58fb0b1965eb5aa79a1894bf033ec42abfa774f71ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953772
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953772
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c66f55eb-d1b2-4479-b274-3f4dd1b89f44.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c66f55eb-d1b2-4479-b274-3f4dd1b89f44.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c66f55eb-d1b2-4479-b274-3f4dd1b89f44
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T10:33:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x19c64c1a58c87804d322f58fb0b1965eb5aa79a1894bf033ec42abfa774f71ee","name":"Matej Starkov","registered_at":"2026-06-15T01:26:51Z","symbol":"NIM0638750","token_address":"0xf29485c52ada5d19e7048dfa3d123575a31b2892","type":"artist","uuid":"c66f55eb-d1b2-4479-b274-3f4dd1b89f44"}
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 0x19c64c1a58c87804d322f58fb0b1965eb5aa79a1894bf033ec42abfa774f71ee. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c66f55eb-d1b2-4479-b274-3f4dd1b89f44.json and https://artists.proofprofile.net/proofs/artist/c66f55eb-d1b2-4479-b274-3f4dd1b89f44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T10:33:29Z
  text: {"copyright_id":"0x19c64c1a58c87804d322f58fb0b1965eb5aa79a1894bf033ec42abfa774f71ee","name":"Matej Starkov","registered_at":"2026-06-15T01:26:51Z","symbol":"NIM0638750","token_address":"0xf29485c52ada5d19e7048dfa3d123575a31b2892","type":"artist","uuid":"c66f55eb-d1b2-4479-b274-3f4dd1b89f44"}
album: Zrkadlenie
  type: MusicAlbum
  date published: 2015-06-01
album: Domovom
  type: MusicAlbum
  date published: 2020-10-01