thumb|A kame near Kirriemuir, Scotland thumb|A kame in Yellowstone National Park, Wyoming thumb|A kame among the glacial drift on the terminal moraine of the Okanagan Lobe of the Cordilleran Ice Sheet
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 0xa66b75ba13562bebc084bdb0c30439edd42931caf25af87c6c45c8b93a8a87f4. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e7bf210-2c07-4e48-84a1-f5f9f1de80d9.json and https://artists.proofprofile.net/proofs/artist/4e7bf210-2c07-4e48-84a1-f5f9f1de80d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).