Shevchenko ( ; alternative spellings Schevchenko, Ševčenko, Shevcenko, Szewczenko, Chevchenko) is a family name of Ukrainian origin. It is derived from the Ukrainian word shvets ( ; compare ), literal
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 0x7c0b8c96818be7b86aac26f6814a300f8f63726f58ca4cea449b2d2f37765dd7. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35007d6d-0b36-4a4a-9b22-ae740b0aeeed.json and https://artists.proofprofile.net/proofs/artist/35007d6d-0b36-4a4a-9b22-ae740b0aeeed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).