The Vuva () is a river in the north-west of the Kola Peninsula in Murmansk Oblast, Russia. It is 61 km in length. The Vuva originates in the Salnie Tundry and flows into the Verkhnetulomskoye Reserv
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 0xb0f79952388914f8faa45eceb78814d5e2db1455c957e8e3077632227dbfc5b2. Chain 2 (Bitcoin): anchored in block 953851 (2026-06-15T23:06:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/018b0e4f-1763-469f-a196-f20c71fee89b.json and https://artists.proofprofile.net/proofs/artist/018b0e4f-1763-469f-a196-f20c71fee89b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).