Magnus, meaning "great" in Latin, was used as cognomen in ancient Rome and a given name in the Middle Ages. People Ancient Romans Pompey Magnus, Roman consul and general who was given the honorific
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 0x782f34d95a9a71f1ccf7e421a2549a92ec23ca12989cb5befa106b6c178a998b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87cbc004-1a21-436f-96d9-40370c57ff1e.json and https://artists.proofprofile.net/proofs/artist/87cbc004-1a21-436f-96d9-40370c57ff1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).