Hiroaki is a masculine Japanese given name. It can be written in many ways. In the following lists, the kanji in parentheses are the individual's way of writing the name Hiroaki. Written forms Form
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 0xcdd32f16b4be991398dcf48372e7af960405a195483de2ee88ec6f50082d2377. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0fb7b19-12f8-4681-9738-2bfefaaee913.json and https://artists.proofprofile.net/proofs/artist/f0fb7b19-12f8-4681-9738-2bfefaaee913.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).