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 0xfba3fc8b23e8f6f522bd4aabb573ba013688eb6d9810b18bab3b76b1cc627707. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf669357-485f-4e53-855e-2ef4b090aef1.json and https://artists.proofprofile.net/proofs/artist/cf669357-485f-4e53-855e-2ef4b090aef1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shrapnel Records Presents: The Best of Modern Blues
Blues Bureau's Slow Jams Vol. 1: Low Down & Dirty Blues Collection