a.k.a. Bait (1966) is a Japanese pink film directed by Hiroshi Mukai, credited as "Kan Mukai" in the international English-dubbed version, and starring Senjo Ichiriki and Michiko Shiroyami. Synopsis
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 0x13825e9f21c516f0fe40bf66eda9d606b0f86c0b81927c823523e5786adc13ef. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afbf7e79-30d2-49a5-89a8-270bd0c6fcd6.json and https://artists.proofprofile.net/proofs/artist/afbf7e79-30d2-49a5-89a8-270bd0c6fcd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).