Rollup Validators

Architecture

Rollup validators represent a critical component within Layer-2 scaling solutions, functioning as network participants responsible for verifying state transitions proposed by sequencers. These validators operate on a consensus mechanism, typically employing fraud proofs or validity proofs to ensure the integrity of rollup chains, and contribute to the security model by challenging invalid state updates. Their role is paramount in maintaining data availability and preventing malicious actors from compromising the rollup’s state, directly impacting the throughput and cost-efficiency of transactions. The design of validator architecture influences the level of decentralization and the responsiveness of the rollup to potential attacks or disputes.