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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb29ed43bcd31f9540f0a6f6aec3db787052efa9732bed391438bf1ea3acff44. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/393ac16f-9fed-4fde-a539-04f7e3a8bded.json and https://artists.proofprofile.net/proofs/artist/393ac16f-9fed-4fde-a539-04f7e3a8bded.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Big Frog Little Frog - Traditional Story Retold by Susan Reed