thumb|The Art Deco gate in the entrance hall of Detroit's Guardian Building is made from Monel. Monel is a group of alloys of nickel (from 52 to 68%) and copper, with small amounts of iron, manganese
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 0x522136cf0bcc8a165fbfb319893c01e7c4e31066536ef13a8d14a3731834cf8c. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e35c97a4-04ac-4ffb-83b1-7dda1ff8b20c.json and https://artists.proofprofile.net/proofs/artist/e35c97a4-04ac-4ffb-83b1-7dda1ff8b20c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).