ZK Rollup
A Layer 2 scaling solution that uses zero-knowledge proofs to verify transaction validity without re-execution.
In-Depth Explanation
ZK rollups (zkSync, StarkNet, Scroll) generate cryptographic proofs that batched transactions are valid. L1 verifies the proof rather than re-executing transactions. This enables faster finality than optimistic rollups (no challenge period) but proof generation is computationally intensive. ZK technology is advancing rapidly; provers are becoming faster and cheaper.
Related Terms
Rollup
An L2 scaling solution that executes transactions off-chain but posts transaction data or proofs to L1 for security.
Layer 2
L2Scaling solutions built on top of a base blockchain (L1) that process transactions off-chain while inheriting L1 security.
Zero-Knowledge Proof
ZKPA cryptographic method that proves a statement is true without revealing any information beyond the validity of the statement itself.
More in Infrastructure
View all →Gas Fees
Transaction fees paid to validators/miners for executing operations on a blockchain.
Gwei
A denomination of Ether equal to one billionth of an ETH, commonly used to express gas prices.
Layer 2
L2Scaling solutions built on top of a base blockchain (L1) that process transactions off-chain while inheriting L1 security.
Layer 1
L1The base blockchain that provides security and consensus, such as Ethereum, Bitcoin, or Solana.