As blockchains such as Ethereum continue to expand, Layer 2 (or L2) solutions provide opportunities for millions of new users. There are countless options currently available. The most promising L2 solutions are so-called Rollups, such as Arbitrum, Optimism, StarkNet, and zkSync, to name a few. These vertical "mini-blockchains" have very similar security properties extending from the Ethereum mainnet. What they have in common is: Cheaper transaction fees (low gas) faster throughput Trustless ...