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 0xab1b30818ae5c90eb2fdc64c3d0caa33f93e65ee7a1af6b2dfffb6e9b1cc6ed0. 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/7ce31d18-c5c0-4bd4-8734-ec8db0ed1402.json and https://artists.proofprofile.net/proofs/artist/7ce31d18-c5c0-4bd4-8734-ec8db0ed1402.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Modern Blues Essentials: The Essential Damon Fowler
Blind Pig Records: 40th Anniversary Collection