thumb|upright|alt=A stone face carved with coloured hieroglyphics. Two cartouches - ovoid shapes with hieroglyphics inside - are visible at the bottom.|Birth and throne cartouches of Pharaoh Seti I, f
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 0x897bd49751d2a34d0901ffa45ae9a665a0586f76cfa2819c535b2734a73af919. Chain 2 (Bitcoin): anchored in block 953975 (2026-06-16T16:53:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b9f4b3b-0d9a-45af-83dc-55be25c3cc2d.json and https://artists.proofprofile.net/proofs/artist/2b9f4b3b-0d9a-45af-83dc-55be25c3cc2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).