Designing Public vs. Private State in Compact: What Goes Where and Why

Designing Public vs. Private State in Compact: What Goes Where and Why One of the first decisions you make when writing a Midnight contract is which state goes on-chain and which stays off-chain. This isn't just a privacy concern — it affects proof size, gas costs, user experience, and whether your protocol is even secure. Get it wrong in one direction and you leak data you promised to keep private. Get it wrong in the other direction and your contract becomes unusable because clients can't reco