Nichlava (; medieval name - Sarnik) is a river in Ukraine, within the Chortkiv Raion of Ternopil Oblast. Left tributary of the Dniester (Black Sea basin). Description and location Length 83 km. The c
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 0x0bcfcf72bc8f64dd32a2631f14fbacbfe996468b9c061718b4413b2b066a8ca7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b145682-7a4e-4a47-93c2-a33059ec08c7.json and https://artists.proofprofile.net/proofs/artist/9b145682-7a4e-4a47-93c2-a33059ec08c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).