Sławomir P. Dobrzański
type: MusicGroup
genre: classical piano
popularity: 11
followers: 76
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ac90c4ce75e6e085d066937eb0aafd6b548ee18e3998cf127f73be4eb1c4f34
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953627
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953627
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:43:04Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ac90c4ce75e6e085d066937eb0aafd6b548ee18e3998cf127f73be4eb1c4f34","name":"Sławomir P. Dobrzański","registered_at":"2026-06-14T09:26:23Z","symbol":"NIM0409582","token_address":"0x39301a2d7373930e26899f38c78fb032bcec4560","type":"artist","uuid":"2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb"}
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 0x8ac90c4ce75e6e085d066937eb0aafd6b548ee18e3998cf127f73be4eb1c4f34. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb.json and https://artists.proofprofile.net/proofs/artist/2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:43:04Z
  text: {"copyright_id":"0x8ac90c4ce75e6e085d066937eb0aafd6b548ee18e3998cf127f73be4eb1c4f34","name":"Sławomir P. Dobrzański","registered_at":"2026-06-14T09:26:23Z","symbol":"NIM0409582","token_address":"0x39301a2d7373930e26899f38c78fb032bcec4560","type":"artist","uuid":"2f4d7c76-4cbb-4e19-8bd5-f987b592f7cb"}