Karol Machata (13 January 1928 – 3 May 2016) was a Slovak actor. He appeared in more than 40 films and television shows between 1951 and 1992. He was inducted into the Hall of Fame at the 8th OTO Awar
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 0x5afc3306918193f0035fe3b953f83c2e3102e25192441f2f14e75c4abd3390f6. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b370fb9e-eff1-42d2-98cb-8a1c14ea0d75.json and https://artists.proofprofile.net/proofs/artist/b370fb9e-eff1-42d2-98cb-8a1c14ea0d75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).