With the upcoming launch of Polygon's zkEVM mainnet, L2s are undoubtedly a huge narrative that is unfolding in 2023. It is time to take a step back and recognise the incredible amount of effort that has gone into researching and building L2 scaling solutions in general and zk rollups in particular. Tech-wise, we barely scratched the surface of general purpose processors that can handle zk circuits, so there is still tremendous room to grow. As layer 2s become more efficient, so will the applications that are dependent on blockchain throughput.We were joined by Jordi Baylina (tech lead) & David Schwartz (CTO) from Polygon's zkEVM, to discuss the different milestones & challenges they had to overcome in designing a zk rollup, from circuits to mainnet.Topics covered in this episode:Jordi’s & David’s backgroundsThe idea behind Hermez NetworkzkEVM scaling & validity proofsHow different ZK rollup models functionWhat challenges zkEVM encountered during developmentEvolutionary pathways in the realm of ZKPsAuditing zkEVMTrusted setup requirement for zkEVMEpisode links: Jordi Baylina on TwitterDavid Schwartz on TwitterPolygon zkEVM on TwitterSponsors: Omni: Access all of Web3 in one easy-to-use wallet! Earn and manage assets at once with Omni's built-in staking, yield vaults, bridges, swaps and NFT support.https://omni.app/ -This episode is hosted by Friederike Ernst & Meher Roy. Show notes and listening options: epicenter.tv/486