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 0xb54e9afd78c0182e783488b49c09ee50b1409c4c17e50397fa14e5fa345cb31f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cb8a556-4da8-45d1-8105-9c3a7a29cdff.json and https://artists.proofprofile.net/proofs/artist/4cb8a556-4da8-45d1-8105-9c3a7a29cdff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
REBIRTH [藤原あかね(CV.田口華有)、野田ここみ(CV.秋場悠里)、瀬戸マリン(CV.道井悠)、紫咲クリス(CV.あおきまお)、宮代りな(CV.五味茉莉伽)、平井かな(CV.池羽悠)、時音ひなた(CV.堀内まり菜)、白石まどか(CV.荒井瑠里)]