1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd4c0d3b48e6df2f409d6fb45a6e8868041057a210b2ae7b0a80a122399d34929. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/652c6dbe-bf13-41fc-a4e2-ad878b176eeb.json and https://artists.proofprofile.net/proofs/artist/652c6dbe-bf13-41fc-a4e2-ad878b176eeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).