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 0xea6efdd45e85ec65106e656a2a8a8c8f470c56eeb05dda9bb7e8e4beae4edb0d. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9fb85fd-d8e7-487a-a4ed-59522e40b8ae.json and https://artists.proofprofile.net/proofs/artist/e9fb85fd-d8e7-487a-a4ed-59522e40b8ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).