Frenzy is a 1972 British neo-noir thriller film directed by Alfred Hitchcock in the penultimate feature film of his extensive career. The screenplay by Anthony Shaffer is based on the 1966 novel Goodb
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 0xf1b87f8fcd3fad3da2c28600dae2d0bbeded62c1c886b1278cf4420f7fc89e88. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1aa5b066-a404-4eda-ba2b-03beb6dd08a4.json and https://artists.proofprofile.net/proofs/artist/1aa5b066-a404-4eda-ba2b-03beb6dd08a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).