Yulia Dmitrievna Zivert (, born as Yulia Dmitrievna Sytnik (); 28 November 1990), known professionally as Zivert, is a Russian singer, songwriter and model. Her career started in 2017 after she relea
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 0xe1394ae029aa71ef8c5b886ed0a8ec523bc5efde73367e5631a942f8a3fa3f53. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c982c70-f826-49a9-813f-4e864e5a4eb8.json and https://artists.proofprofile.net/proofs/artist/1c982c70-f826-49a9-813f-4e864e5a4eb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).