Theシャッフル(CV.小林竜之・高橋 渉・橋本晃太朗・長谷徳人・江田拓寛)
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 0x71277d4cbf79a397d7e922e9c2eb98e47150d8e62faadcae4f5e7d86df543581. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd2dc34a-1a80-4174-a131-13c4453edd58.json and https://artists.proofprofile.net/proofs/artist/bd2dc34a-1a80-4174-a131-13c4453edd58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).