Janusz Iwanski "yanina"
type: MusicGroup
popularity: 28
followers: 160
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf42c28aa081f3118fae71d90d47b30a99c9a45246671433ec445cfbb9896b2eb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21561122-7895-4db4-8f75-6098329c73b6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21561122-7895-4db4-8f75-6098329c73b6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21561122-7895-4db4-8f75-6098329c73b6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf42c28aa081f3118fae71d90d47b30a99c9a45246671433ec445cfbb9896b2eb","name":"Janusz Iwanski \"yanina\"","registered_at":"2026-06-11T14:05:59Z","symbol":"NIM0043781","token_address":"0xa9c60506499894c37d2156533406595e243c45a0","type":"artist","uuid":"21561122-7895-4db4-8f75-6098329c73b6"}
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 0xf42c28aa081f3118fae71d90d47b30a99c9a45246671433ec445cfbb9896b2eb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21561122-7895-4db4-8f75-6098329c73b6.json and https://artists.proofprofile.net/proofs/artist/21561122-7895-4db4-8f75-6098329c73b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xf42c28aa081f3118fae71d90d47b30a99c9a45246671433ec445cfbb9896b2eb","name":"Janusz Iwanski \"yanina\"","registered_at":"2026-06-11T14:05:59Z","symbol":"NIM0043781","token_address":"0xa9c60506499894c37d2156533406595e243c45a0","type":"artist","uuid":"21561122-7895-4db4-8f75-6098329c73b6"}