Klavdiya Vadimovna Vysokova (; born 23 July 1995), known professionally as Klava Koka (), is a Russian singer, songwriter, and YouTuber. Vysokova began her professional career in 2015, being signed t
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 0x432d4c208c1d07e976b1ff4ad7df11907a45292c4c654d00b281a9a8f96e4bab. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7a25d92-c0f3-4ca9-879c-8c1ecf7d637d.json and https://artists.proofprofile.net/proofs/artist/d7a25d92-c0f3-4ca9-879c-8c1ecf7d637d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).