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 0xc0f26a31d6ab0ddc38cd4584f05ca47b1d97c2177a7285ebd353d750513f861b. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26ad85bf-ce39-47a1-b23b-3504eba89d5b.json and https://artists.proofprofile.net/proofs/artist/26ad85bf-ce39-47a1-b23b-3504eba89d5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER MILLION THE@TER GENERATION 02 フェアリースターズ
THE IDOLM@STER MILLION THE@TER GENERATION 02