is a Japanese video game writer. He is best known for writing several installments of Square Enix's Final Fantasy franchise—namely Final Fantasy VII and its spin-offs Advent Children and Crisis Core,
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 0x4098039203e84eba341e4c16775f6b477afcf2b602d447877194a334a08cafd9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/956f3acb-6801-49f6-aa4d-9e002147d8b3.json and https://artists.proofprofile.net/proofs/artist/956f3acb-6801-49f6-aa4d-9e002147d8b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).