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 0xd1087d855c28d7f7661eb4e18ad1a31c9e0ec8183c0b4efbaa3d4c688c8dce78. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e23797c-141d-47d7-8b88-8436caf8f3f9.json and https://artists.proofprofile.net/proofs/artist/0e23797c-141d-47d7-8b88-8436caf8f3f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).