thumb|right|Horizontal flags featuring the GAZelle logo near a GAZelle car shop in Astana GAZ (Gorkovsky avtomobilny zavod, ) is a Russian automotive manufacturer located in Nizhny Novgorod, formerly
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 0x1a93fe5df9ac88bf2ab1071cb068c84a555f86b20b9321aaac0e33be70d89a52. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15e3e36a-0443-4c6f-9897-e3170bd9c64e.json and https://artists.proofprofile.net/proofs/artist/15e3e36a-0443-4c6f-9897-e3170bd9c64e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).