Hiroyuki Takami (貴水博之 Takami Hiroyuki, born 3 June 1969 Saitama, Japan, birthname Fukuda Hiroyuki 福田博幸) is a Japanese singer and actor. He is a member of the Japanese pop group access or AXS. Hiroyu
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 0x6f7c1d47ebc5a2d100c73f0b6b4036f1828239a47977be80b8e85b39929025e4. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcc2bd22-d336-4716-ad88-89e2961e355b.json and https://artists.proofprofile.net/proofs/artist/fcc2bd22-d336-4716-ad88-89e2961e355b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).