As of my last knowledge update in January 2022, I don't have information on specific Layer 2 projects that emerged or gained prominence in 2023 and 2024. However, I can provide you with some Layer 2 solutions and projects that were notable up to 2022. Please note that the cryptocurrency and blockchain space is dynamic, and new projects may have emerged since then. Here are some Layer 2 projects that were relevant in the blockchain space up to 2022, and you may want to check if they have ...