thumb|360px|Emergency medical technicians from the 96th Medical Group move an airman pretending to be wounded toward safety during an active shooter exercise at Eglin Air Force Base in Florida in 2014
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 0x029e7b6c209c1c04cf8d97239a36d7c104a7217069014292cec9d423e69c0bb7. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0e2962f-3a01-40ed-8e99-111df2e870d4.json and https://artists.proofprofile.net/proofs/artist/f0e2962f-3a01-40ed-8e99-111df2e870d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).