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 0x4291c6f186db22148a5b5ceeee01db3f2cb4558105dfc48774873b9bcb599b23. 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/b96f6159-bf2a-4c2e-922f-11fe9bb7c5a1.json and https://artists.proofprofile.net/proofs/artist/b96f6159-bf2a-4c2e-922f-11fe9bb7c5a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
(this is what it feels like living on the other side)