Mateusz Damięcki (born 19 May 1981) is a Polish actor. He has appeared in more than 30 films and television shows since 1993. Selected filmography Karol: A Man Who Became Pope (2005) Jutro idziemy do
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54c6fdccdf59b729d984e3c34334ab96136439b647f681c4604c00d6be91ef4. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d518fefc-dc1e-4502-9a7d-53eeb8008465.json and https://artists.proofprofile.net/proofs/artist/d518fefc-dc1e-4502-9a7d-53eeb8008465.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).