, known professionally as , is a Japanese composer, musical director, conductor and pianist, known for over 100 film scores and solo albums dating back to 1981. Hisaishi's music has been known to expl
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 0x665cc3fa4d4f2a07c573fdd52cbf9ef59a6541222d1a8eb8d8ca58a4987aa69c. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de129078-e33e-4b07-8f76-b613c722d923.json and https://artists.proofprofile.net/proofs/artist/de129078-e33e-4b07-8f76-b613c722d923.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).