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 0x5ad8a09a3a41cdad461a26d864ebd68b0366ead72d6d5cc99a378d53481c2362. 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/ad5df8ed-52e3-4187-bd2c-8ca7add385b0.json and https://artists.proofprofile.net/proofs/artist/ad5df8ed-52e3-4187-bd2c-8ca7add385b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Deeper Side of London, Pt. 1 (The Remixes)