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 0x45fb86a20c47197dae3acaa2910386439c169e159808bdd28e97a6b5d9fb53df. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b830d12d-a0bf-4e76-bd77-5efc757543c3.json and https://artists.proofprofile.net/proofs/artist/b830d12d-a0bf-4e76-bd77-5efc757543c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あんさんぶるスターズ！！ バラエティソングシリーズ 究極の9曲 「風早先輩の懺悔室！〜迷えるESアイドル版〜」