Zk-rollup
Intermediate
Zk-rollup is a layer-2 scaling solution designed to increase the transaction throughput of blockchain networks without compromising on security. They operate by bundling or "rolling up" many off-chain transactions into a single transaction that is then verified and recorded on the main chain. This aggregation drastically reduces the amount of data that needs to be stored on-chain, allowing for faster and cheaper transactions.
The term "zero-knowledge" in zk-rollups refers to using zero-knowledge proofs or ZKPs. ZKPs are a cryptographic tool that allows one party to prove to another that a statement is true without revealing any information about the statement itself. In the context of zk-rollups, these proofs ensure that all transactions in the bundled batch are valid without disclosing the specifics of each transaction.
Key advantages of zk-rollups include: