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 0x3edd509ea14e0fb5f92060de1e18deaf973c86c7df77a6a16aaf51793cfbf716. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/354cd9ba-ee94-46aa-bd22-00d1f1e1ccfc.json and https://artists.proofprofile.net/proofs/artist/354cd9ba-ee94-46aa-bd22-00d1f1e1ccfc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).