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 0xe857d3cb4ca55688bc665b4fb6b48d39b8ab7ac4d0df6484794744a88b73c364. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8edd3d1f-dcc2-4311-b29c-b1cc4c3ce724.json and https://artists.proofprofile.net/proofs/artist/8edd3d1f-dcc2-4311-b29c-b1cc4c3ce724.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bite Off The Hand That Feeds You - Mixed