IZO is a 2004 Japanese surrealist period horror film directed by Takashi Miike. The main character of the film is Izo Okada (1832–1865), the historical samurai and assassin in 19th-century Japan who w
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 0xda2d9d8804e628cc8177e7625de90e423b8e0064c03a8cc3fe286cc2dcda3165. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fbcb257-7ab4-46c6-bedb-3dfa38840bdf.json and https://artists.proofprofile.net/proofs/artist/6fbcb257-7ab4-46c6-bedb-3dfa38840bdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).