James Bryan may refer to: James Bryan (mining executive) (1789–1822), Missouri mining entrepreneur James W. Bryan (Louisiana politician) (1834–1897), American politician from Louisiana James W. Bryan
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 0xb3ece2da89afee9a00ab862a7191543e68ecccf5ad7ac942a1907dead41b2126. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/457b7620-0105-4ee6-ad2e-72c208eb94ab.json and https://artists.proofprofile.net/proofs/artist/457b7620-0105-4ee6-ad2e-72c208eb94ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).