Ruskov ()Varsík, Branislav. 1984. Z osídlenia západného a stredného Slovenska v stredoveku. Bratislava: VEDA, vydavateľstvo Slovenskej akadémie vied, p. 153. is a village and municipality in Košice-ok
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 0x770e6aed966ce6e3c01c8fd489594c42935f705b574180c34774449a5fe733e4. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f43264f-890f-42a3-9bbd-b9eaa47fd513.json and https://artists.proofprofile.net/proofs/artist/0f43264f-890f-42a3-9bbd-b9eaa47fd513.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).