➔ What if MEV > block reward? ◆ 上層應用危及底層 protocol ◆ 礦工會嘗試 fork • Undercutting attacks • Time-bandit attacks 30 參考論文 Flash Boys 2.0: Frontrunning, Transaction Reordering, and Consensus Instability in Decentralized Exchanges https://arxiv.org/abs/1904.05234