Robert Evans (born Robert J. Shapera; June 29, 1930 – October 26, 2019) was an American film producer, studio executive, and actor who worked on Rosemary's Baby (1968), Love Story (1970), The Godfathe
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 0xf172dbca9ede34bf19104403af2500a45a6dcca2288ea269e72f845b83549ba7. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42e27df5-ccb7-4611-90a6-5b260dd41de0.json and https://artists.proofprofile.net/proofs/artist/42e27df5-ccb7-4611-90a6-5b260dd41de0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).