For the American author, see Mary Ormsbee Whitton. Mary C. Whitton is an American computer scientist specializing in computer graphics and human–computer interaction, especially concerning redirected
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 0xa1eea5f1708c5dfbbc76c75e7451a4eeeccfb55417f600c3a14e28ee789df4a4. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec5c1d07-6869-4f66-9ef2-c46bd31f8d8d.json and https://artists.proofprofile.net/proofs/artist/ec5c1d07-6869-4f66-9ef2-c46bd31f8d8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).