Zk-rollups are a layer 2 scaling solution that improve transaction throughput while maintaining security. They bundle multiple transactions into a single one, reducing the load on the main blockchain.The “zk” stands for zero-knowledge, a cryptographic method that ensures the validity of transactions without revealing any underlying data. This allows for greater privacy and efficiency. When transactions are processed in a zk-rollup, only a cryptographic proof is submitted to the main blockchain, greatly minimizing the amount of data stored on it.By aggregating transactions, zk-rollups reduce fees and increase the speed of transactions. Users can transact more quickly and at a lower cost while still benefiting from the security of the main blockchain.This approach addresses scalability challenges, enabling more users to engage with the network without compromising on speed or security. Overall, zk-rollups represent a significant advancement in blockchain technology, making it more efficient and user-friendly.