thumb|right|300px| Mauretanian cavalry under Lusius Quietus fighting in the Dacian Wars, from the Column of Trajan Mauri (from which derives the English term "Moors") was the Latin designation for the
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 0xa4d6365cdc1523d5fffdd6770169271e0bc034fc61645ed3888015eda9880900. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba239431-685f-41fa-a642-366d3462eec6.json and https://artists.proofprofile.net/proofs/artist/ba239431-685f-41fa-a642-366d3462eec6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).