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 0xba1d41726230ffcffc6f779f0610f1f9d803366ff297915d8139d753fdfa5e04. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2ac5e3d-2d81-423b-b865-80ee5c4155cc.json and https://artists.proofprofile.net/proofs/artist/f2ac5e3d-2d81-423b-b865-80ee5c4155cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「伝説の勇者ダ・ガーン」オープニングテーマ 風の未来へ