1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76ed7ecd0a3c443ada724778332927e66216a3a06f2769ce3b88c15015165a5. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d556775-2fc3-4090-a8d8-e50366fc96f0.json and https://artists.proofprofile.net/proofs/artist/9d556775-2fc3-4090-a8d8-e50366fc96f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Green Apocalypse Sunset (Original Song by Sunset & Olympus)