thumb|A beef steak dinner, served with mushrooms thumb|A steak topped with sautéed mushrooms A steak is a cut of meat sliced across muscle fibers, sometimes including a bone. It is normally grilled or
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 0x360435f034e7bc240948a5b25c68927830155586411a9cd3005d07712aed8cc5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8884fb27-ecda-444e-a640-12ec1a1459da.json and https://artists.proofprofile.net/proofs/artist/8884fb27-ecda-444e-a640-12ec1a1459da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).