Kurt Caesar (also known as Cesare Avai or Caesar Away, true name Kurt Kaiser; 30 March 1906 – 12 July 1974) was a German-Italian painter, journalist and comic book artist. He was born at Montigny-lè
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 0xf077d83d8b6cecc78937ebe53a393cac6fc80804a1140dd673fc3349869b4b9a. 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/ed94cc87-344a-4df9-98cc-d1fbb4d78c08.json and https://artists.proofprofile.net/proofs/artist/ed94cc87-344a-4df9-98cc-d1fbb4d78c08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).