Robert Mason may refer to: Politics Robert Mason (died by 1581), MP for Ludlow Robert Mason (died 1591), MP for Ludlow Robert Mason (died 1635) (1579–1635), Member of Parliament for Winchester, 16
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 0x29eea55632226c0ff787f493b5cb5d52d921596c215f55261f8ddaafda3a27c7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/585fabb9-3d92-4d2c-a68b-5143858f9ad1.json and https://artists.proofprofile.net/proofs/artist/585fabb9-3d92-4d2c-a68b-5143858f9ad1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).