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 0x86b1e376838db79fcccdfc53603b29572375577b4a42bdc524b5a9c97e80fb2e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1d3115e-9d0c-453b-8c9b-000fbedec2b7.json and https://artists.proofprofile.net/proofs/artist/c1d3115e-9d0c-453b-8c9b-000fbedec2b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
S.O.a.P.S (Sketches of a Panoramic Skyline)
Stoop Kid (feat. J Murph, Loso & Tony Tillman)