Kot is the surname of a Polish nobility (szlachta) family. The surname derives from the nickname with the literal meaning 'cat'.Kazimierz Rymut, Nazwiska Polaków. Słownik historyczno-etymologiczny, Wy
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 0x766c27834fe16c151b85e9fcfa601b8912920a008b978bc11b0670fda0783404. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d46f2bc-7e5b-4033-9992-db668f0bde0d.json and https://artists.proofprofile.net/proofs/artist/7d46f2bc-7e5b-4033-9992-db668f0bde0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).