The path to the blockchain through the so-called Dark Forest is perilous. In this Wild West, the naive user's interactions with the blockchain can be seen and mined for information by sophisticated actors before they even happen. Existing mitigations such as out-of-protocol private order flow and hash-based commit-and-reveal introduce additional points of failure or suffer from overhead. To overcome these limitations, we describe "temporary encryption with delayed execution", a new architecture for smart contract blockchains that leverages threshold cryptography to solve the problem of front-running in an elegant way. We also show how the same solution can support sealed-bid auctions, randomness generation, and other use cases. Finally we discuss the drawbacks of our construction and the state of current and future research in the field.