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 0x1ff41a8b2cd03b83c650d0792839ff89fe1e6f2fb7954e0ba02d851f2311e181. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fd9bc54-abbf-462f-b4a1-94c8a48fdc59.json and https://artists.proofprofile.net/proofs/artist/1fd9bc54-abbf-462f-b4a1-94c8a48fdc59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).