プリティーリズム☆オールスターズ(CV.阿澄佳奈・原紗友里・片岡あづさ・米澤円・明坂聡美)
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 0xfe23ebaf9679ca7567ace07bf0f654c1f32c4c20ec48172d20d4c706e175e4b5. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afd12d08-8dce-4b63-beb3-579593317045.json and https://artists.proofprofile.net/proofs/artist/afd12d08-8dce-4b63-beb3-579593317045.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).