John Arthur Lithgow ( ; born , 1945) is an American actor. He studied at Harvard University and the London Academy of Music and Dramatic Art before becoming known for his diverse work on stage and s
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 0x00411635a46a776cf5078ca3ffecb06c85a170993823d474ff863cd95af3d2df. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f5df0c5-c5bf-43e7-8ba1-1ed66af0bdda.json and https://artists.proofprofile.net/proofs/artist/6f5df0c5-c5bf-43e7-8ba1-1ed66af0bdda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).