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 0x043ae07472d2525a3cac01510c3990419a2c33aa527cde8fbb9ea5dbec528753. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bea6323-3201-49d3-bc9d-d6c34ab45d0b.json and https://artists.proofprofile.net/proofs/artist/5bea6323-3201-49d3-bc9d-d6c34ab45d0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cumberland Gap / Johnny, Don't Get Drunk
Cousin Sally Brown / Glory in the Meetinghouse
Old Beech Leaves / Sheep and Hogs Walking Through the Pasture
John Riley the Shepherd / Brushy Fork of John's Creek