Loopz is a puzzle video game designed and programmed by Ian Upton for the Atari ST in 1989. He previously worked as head game designer for Audiogenic, who acquired exclusive rights to the game, then i
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 0x4dc5126fdadd733f7dbe513f068199b7b5a51f3ea71c68b69a65d2d4f63fb8c2. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02f29470-4018-44bb-97e2-6244060f0430.json and https://artists.proofprofile.net/proofs/artist/02f29470-4018-44bb-97e2-6244060f0430.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).