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 0x91869cfa600999f66b6df9cfda4ab5b4c6c13fac26e9640f7b8ad0028c60b8f9. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/359e3028-4a37-4570-90fa-726b042ad6c3.json and https://artists.proofprofile.net/proofs/artist/359e3028-4a37-4570-90fa-726b042ad6c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
関係者以外立入禁止 feat. BEMA from カイワレハンマー