Explore the concept of Blockchain Extractable Value in this 16-minute IEEE conference talk. Delve into the world of decentralized finance (DeFi) and understand the potential risks associated with transaction replay attacks. Learn how to quantify and assess the impact of extractable value on blockchain ecosystems, gaining insights into the complexities of this emerging field. Discover the implications for blockchain security and the future of DeFi as experts from Imperial College London share their research findings and analysis.