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 0x1df059132788d19fb3b41939ef56e1a599c7280915c19a161c330d932b74c311. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc2be2ed-9f4f-4847-8b8d-b62e8b333639.json and https://artists.proofprofile.net/proofs/artist/dc2be2ed-9f4f-4847-8b8d-b62e8b333639.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Big Things Come From Small Places (Slowed & Reverbed)
Love Letter II (Slowed & Reverbed) [You]