Unichain innovatively integrates TEE technology in its L2 blockchain to enhance transaction transparency, fairness, and combat MEV risks. Through TEE-based block building, Unichain prioritizes transactions based on fees, minimizing reliance on centralization and ensuring fair pricing reflective of network demand. Public attestation tools increase trust, while encrypted mempools and pre-simulation tools mitigate MEV risks. Future developments, such as Flashblocks, promise reduced latency and improved transparency. These advancements position Unichain as a pioneer in decentralized infrastructure, addressing the challenges faced by Ethereum in MEV practices.