ZK-rollups are a secure method of storing and sharing information online. They are different from other systems because they use trustless cryptographic setups to ensure security. This means that instead of relying on honest validators and sequencers like optimistic rollups, ZK-rollups use special codes to keep information safe.

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.

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.

ZK-rollups are a secure method of storing and sharing information online. They are different from other systems because they use trustless cryptographic setups to ensure security. This means that instead of relying on honest validators and sequencers like optimistic rollups, ZK-rollups use special codes to keep information safe.

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.