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 0x1761176c2a631dde429bad30ef650ca0ba7a3f48f6537ddd6c2755441b729b7d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28ed19a2-d7a1-4ff6-9b74-26812f5f71ad.json and https://artists.proofprofile.net/proofs/artist/28ed19a2-d7a1-4ff6-9b74-26812f5f71ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Where There's Smoke, There's Fyah (Deluxe Edition)