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 0x4927c7d291639e8f883d2d5e973e6ac5b60dc597eede1b03ece2fe81bdbe248a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c37eb37-b48b-48b8-9b46-57f91c4c13f3.json and https://artists.proofprofile.net/proofs/artist/8c37eb37-b48b-48b8-9b46-57f91c4c13f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).