Zkrollups

Architecture

Zkrollups represent a Layer-2 scaling solution for blockchains, primarily Ethereum, employing zero-knowledge proofs to validate transactions off-chain while maintaining on-chain security. Their architecture fundamentally separates transaction execution from settlement, enabling significantly higher throughput and reduced transaction costs compared to Layer-1 processing. This design involves a sequencer that bundles transactions, generates a succinct proof of their validity, and posts it to the main chain, thereby minimizing on-chain data footprint. Different Zkrollup implementations, such as zk-STARKs and zk-SNARKs, utilize varying cryptographic techniques to achieve this efficiency, each impacting proof generation time and computational requirements.