Ekaterina Vladimirovna Varnava (born 9 December 1984, Moscow, USSR) is a Russian theatre, film, television and voice actress, television presenter, comedian and choreographer. She is best known as a p
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 0xbb4a2d5ace8198f9a49d83f623a2f2b50c114a4f0d43a6be66659f5b870a8323. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea858f92-9608-4c5c-9dd2-d6d21922f34f.json and https://artists.proofprofile.net/proofs/artist/ea858f92-9608-4c5c-9dd2-d6d21922f34f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).