2
ZK-rollups use validity proofs to authenticate off-chain transactions. This helps prevent operators from making incorrect changes to the Ethereum state. With these proofs, ZK-rollups can update the state of their host Layer-1 blockchains by storing compressed transaction data on-chain. This helps ensure security, decentralization, and resistance to censorship.
4
ZK-rollups are also more cost-effective than other systems. They use excellent data compression techniques, which reduces the cost of publishing data on-chain. This results in lower fees for users.
3
Another advantage of ZK-rollups is that they are faster than other systems. With ZK-rollups, transaction finality periods are shorter because they only need the blockchain to verify validity proofs submitted by the sequencers. This means that withdrawal delays are minimal and there is greater capital efficiency for users.
5
Finally, ZK-rollups do not require users to validate the blockchain to protect their assets. This is because they do not depend on liveness assumptions. Unlike some sidechains and scaling solutions, ZK-rollups do not require extra work from users to ensure the safety of their information.