Zarina is a feminine name derived from the Slavic word “tsar / tzar” (царь), a title used by Slavic monarchs or supreme rulers, plus sometimes the suffix (itsa), the title of a female autocratic ruler
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 0xcc6ccc5bd69da1ba5509df8d72b18eaf5fe91f4c58001751621236c2b0de684f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3ebfc27-1bba-4ba3-af23-500cb26c591c.json and https://artists.proofprofile.net/proofs/artist/e3ebfc27-1bba-4ba3-af23-500cb26c591c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).