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 0x399c3c572340ac65d815592ee47a8086acfce1e44b7cae80777624cf09a698d8. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc3557ed-2854-46fb-8ebf-9bc78bf20f0c.json and https://artists.proofprofile.net/proofs/artist/cc3557ed-2854-46fb-8ebf-9bc78bf20f0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Devil's Diary (Intro) [feat. Sam Watson]