thumb|right|Sgt Ezra Lee thumb|right|A diagram of the American Turtle It incorrectly depicts the propeller as a screw blade; reported by Sergeant Lee, it was a paddle propeller blade. Ezra Lee (Augus
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 0x4399e66526140aa1446f65880d3cea44d20e2704893d07e88a23f5069cf1e2e5. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe1f985a-ba0f-40aa-bd6e-45de4c394514.json and https://artists.proofprofile.net/proofs/artist/fe1f985a-ba0f-40aa-bd6e-45de4c394514.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).