is a Japanese video game designer. Nakamura gained fame as a programming prodigy while still in high school; in 1982, he entered Enix's first national programming contest and claimed runner-up prize
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 0x475e63679bc75da1db5496749a58ed5a880464c7cbb07ca490ed1d2fe040ed0d. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a66db85-3edb-403f-8fa2-3c297dc2ca62.json and https://artists.proofprofile.net/proofs/artist/9a66db85-3edb-403f-8fa2-3c297dc2ca62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
『はじまりの日』オリジナルサウンドトラック