Стефка Кушлева
type: MusicGroup
popularity: 2
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x08b0710d4eb2c9eac0f0bfccfab48e9d954b1122d584edfcd6a46bfe2a2a3192
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953903
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953903
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1457e911-9390-452d-9424-7405b84af3f2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1457e911-9390-452d-9424-7405b84af3f2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1457e911-9390-452d-9424-7405b84af3f2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:05:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x08b0710d4eb2c9eac0f0bfccfab48e9d954b1122d584edfcd6a46bfe2a2a3192","name":"Стефка Кушлева","registered_at":"2026-06-15T20:30:50Z","symbol":"NIM0823461","token_address":"0x09e5ec478cb7a0964b439c40f6d5781928a5f661","type":"artist","uuid":"1457e911-9390-452d-9424-7405b84af3f2"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b0710d4eb2c9eac0f0bfccfab48e9d954b1122d584edfcd6a46bfe2a2a3192. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1457e911-9390-452d-9424-7405b84af3f2.json and https://artists.proofprofile.net/proofs/artist/1457e911-9390-452d-9424-7405b84af3f2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T07:05:05Z
  text: {"copyright_id":"0x08b0710d4eb2c9eac0f0bfccfab48e9d954b1122d584edfcd6a46bfe2a2a3192","name":"Стефка Кушлева","registered_at":"2026-06-15T20:30:50Z","symbol":"NIM0823461","token_address":"0x09e5ec478cb7a0964b439c40f6d5781928a5f661","type":"artist","uuid":"1457e911-9390-452d-9424-7405b84af3f2"}