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 0xd19d9c41c092825b9a36a654a2cdcb876cede2a77fcd8eda1ca3e2f511b12cda. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b8d40cd-268a-406f-93fe-a6bbf2db6a66.json and https://artists.proofprofile.net/proofs/artist/7b8d40cd-268a-406f-93fe-a6bbf2db6a66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).