thumb|Stele at the entrance to the village thumb|Coat of arms of Kez Kez () is a rural locality (a settlement) and the administrative center of Kezsky District of the Udmurt Republic, Russia, located
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 0x316fd286ae61512040eef9de10a3fdbf4b7c6ef515461594fb5dcd03ea358c66. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/224a0c92-01b4-4586-be73-cc31a8748219.json and https://artists.proofprofile.net/proofs/artist/224a0c92-01b4-4586-be73-cc31a8748219.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).