Hong Kim, from the Core Network, aims to enhance Bitcoin's capital efficiency, while Eli Ben-Sasson of StarkWare seeks to unite the Bitcoin and Ethereum communities. Jeff Garzik, a longstanding Bitcoin developer and founder of Hemi, shares insights on building in Bitcoin's ecosystem. They discuss the rising use cases for Bitcoin L2s, the importance of interoperability, and innovative lending solutions. Delving into the path to mass adoption, they consider Bitcoin's dual nature as a reserve asset and a powerful DeFi player, exploring user-friendly applications and the future of crypto.