Introduction to Rollup L2, short for Layer 2, is a concept referring to second-layer protocols or solutions built on top of the main blockchain. Its aim is to enhance the scalability and efficiency of blockchain networks. Rollup is a specific implementation of L2, designed to alleviate the burden on the main blockchain by moving transaction processing and data storage to the second layer while maintaining security and decentralization. In a Rollup, multiple transactions are aggregated into a ...