Cageman () is a 1992 Hong Kong satirical comedy-drama film directed by Jacob Cheung. It won four awards at the 12th Hong Kong Film Awards held in 1993, including Best Film. Plot The movie explores th
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 0x2934afaa191f6a6b456a3aab7a97505e02f3ccd146f5b83ad2d404482d4d95d6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aa570f7-ad01-47bf-8c72-8d5f7804a122.json and https://artists.proofprofile.net/proofs/artist/8aa570f7-ad01-47bf-8c72-8d5f7804a122.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).