X-Blades is a hack and slash video game developed by Gaijin Entertainment and originally released in November 2007 by 1C Company in the Russian language for Microsoft Windows under the title Ониблэйд
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 0x65106c66c5d1a8ae0070570ea1b0383ee992fd4251878be6f6e7098d40d66191. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d40f0536-6fdb-4c88-8e36-a81f13e89f2c.json and https://artists.proofprofile.net/proofs/artist/d40f0536-6fdb-4c88-8e36-a81f13e89f2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).