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 0x1f07e18f459fbb9d174ee3956463b9d24d970ad171d83e36482f27bf36365d29. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b321108a-5e70-4855-9c8e-2e149b6f1fcf.json and https://artists.proofprofile.net/proofs/artist/b321108a-5e70-4855-9c8e-2e149b6f1fcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dirty Water: The Very Best Of The Inmates
Sgt Pepper's Lonely Hearts Club Band (Live)
Jealousy - Live at the Electric Ballroom, 27/10/1979
Sweet Rain (New Version) - Re-Recorded Version
(I Thought I Heard A) Heartbeat (7" Version)