Lutek is a village in the administrative district of Gmina Olsztynek, within Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland. References Category:Villages in Olsztyn County
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55e6cb9bd2f86c1152e65453d750883cc50aab2fd861b4b11a1f9dc6dfa0cf. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f65eee1-6a8d-4dfd-a203-327a5c509c59.json and https://artists.proofprofile.net/proofs/artist/1f65eee1-6a8d-4dfd-a203-327a5c509c59.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.