thumb|upright=1.3|Stand easy in the stoker's mess of the corvette , 1943 The mess (also called a mess deck aboard ships and commonly mess hall) is a designated area where military personnel socialize,
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba73ca1c280e1880e1750922911dfb2f7f8ea80a7fc0c45358968033d7bdd17. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51cd4483-1d05-4ab7-b754-0ccbf53c80f4.json and https://artists.proofprofile.net/proofs/artist/51cd4483-1d05-4ab7-b754-0ccbf53c80f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).