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 0x1ab7898ffdcfe6e1a05a59d5025176adac4d77912ab757af3f41fa9180ad1e69. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23f965e0-7dc6-4643-b1ec-93de87ae0c13.json and https://artists.proofprofile.net/proofs/artist/23f965e0-7dc6-4643-b1ec-93de87ae0c13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).