1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31e97e8ca13224120fbb492f342fba0878f7835cc5149537ffbad5db470f046. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b384e670-eb2a-4040-a9f4-7e0058df9d6b.json and https://artists.proofprofile.net/proofs/artist/b384e670-eb2a-4040-a9f4-7e0058df9d6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
永遠のうた+アドレナリンドライブ
永遠のうた - シングル・ヴァージョン