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 0xe3f3e347cd44ffa1ebb24fbe6c2f1113f7f539865dca83e2a8b563a3536d5aa5. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb6ef464-63bd-4603-8e67-9f6b87cf4342.json and https://artists.proofprofile.net/proofs/artist/fb6ef464-63bd-4603-8e67-9f6b87cf4342.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).