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 0xf16ad8a8bb8c8b4dde7b471127618416c5c5a1dae97253928072bb7f7ce3b825. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/100a1ac7-2e3f-4d10-ac0e-05e5e5777307.json and https://artists.proofprofile.net/proofs/artist/100a1ac7-2e3f-4d10-ac0e-05e5e5777307.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).