Wojciech Gumiński
type: MusicGroup
description: Wojciech Gumiński (born 10 February 1989) is a Polish handball player for KS Azoty-Puławy and the Polish national team.EHF profile References Category:1989 births Category:Living people Category:Spo
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c8f1b96e1c13df3098334bfd2884c42eb74ba871ed6376765d2285510a561de
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/605e36b9-309e-4e51-a0cf-9888295517a6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/605e36b9-309e-4e51-a0cf-9888295517a6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/605e36b9-309e-4e51-a0cf-9888295517a6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2c8f1b96e1c13df3098334bfd2884c42eb74ba871ed6376765d2285510a561de","name":"Wojciech Gumiński","registered_at":"2026-06-16T23:06:33Z","symbol":"NIM1204310","token_address":"0x532cb5005e3ae7310c3afd8bfd9b845eb2187334","type":"artist","uuid":"605e36b9-309e-4e51-a0cf-9888295517a6"}
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 0x2c8f1b96e1c13df3098334bfd2884c42eb74ba871ed6376765d2285510a561de. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/605e36b9-309e-4e51-a0cf-9888295517a6.json and https://artists.proofprofile.net/proofs/artist/605e36b9-309e-4e51-a0cf-9888295517a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2c8f1b96e1c13df3098334bfd2884c42eb74ba871ed6376765d2285510a561de","name":"Wojciech Gumiński","registered_at":"2026-06-16T23:06:33Z","symbol":"NIM1204310","token_address":"0x532cb5005e3ae7310c3afd8bfd9b845eb2187334","type":"artist","uuid":"605e36b9-309e-4e51-a0cf-9888295517a6"}