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 0x7e89e67f4c160171ab10eb81d62611082f8a772655fe02c44fda24b80ab9cd28. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d97c80bf-d7a2-487c-ae36-fa9e7daf887b.json and https://artists.proofprofile.net/proofs/artist/d97c80bf-d7a2-487c-ae36-fa9e7daf887b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's Beginning to Look a Lot Like Christmas