is a common masculine Japanese given name. Written forms Tatsuya can be written using different kanji characters and can mean: 達也, "master/accomplished, to be" 達矢, "master/accomplished, arrow" 竜也,
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 0x666a37b6689b3a7664cda20eb5234a46bfac48365c0239e00b614142e5c28473. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7762830-1488-44d1-ab9b-98aa14c55077.json and https://artists.proofprofile.net/proofs/artist/c7762830-1488-44d1-ab9b-98aa14c55077.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).