松野家六兄弟(高崎翔太・柏木佑介・植田圭輔・北村 諒・小澤 廉・赤澤遼太郎)
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 0xdf41c50a810ec2dfaf7a5c3bbd9af9dc4c2e7b7be23aa2c71cc1f0b91a09828f. 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/f2c5871d-84c0-434a-a820-99d90552120b.json and https://artists.proofprofile.net/proofs/artist/f2c5871d-84c0-434a-a820-99d90552120b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).