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 0x2af64bb0ad1446f60fc86bbd5747a3c21fd22713fa68fe7ff2988c52463abab0. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a330f69b-b9dc-4349-a1ce-d1e8ef5c4610.json and https://artists.proofprofile.net/proofs/artist/a330f69b-b9dc-4349-a1ce-d1e8ef5c4610.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
月は年々３cmずつ地球から遠ざかっている
ウミガメは一生母親に出会えない
かき氷のシロップはぜんぶ同じ味