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 0xfad087afeb87172efa69831e6fded4ae5da500170a633fcc4423b1149ba432ff. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b846b9cf-e97d-4dae-8c0a-5f0d8711a413.json and https://artists.proofprofile.net/proofs/artist/b846b9cf-e97d-4dae-8c0a-5f0d8711a413.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
恶作剧（因为我拥有爱情的勇气） (DJ甜美版)