Execution Layer Integrity

Definition ∞ Execution layer integrity refers to the assurance that all transactions and smart contract operations on a blockchain’s execution layer are processed correctly, deterministically, and without unauthorized alteration. This property ensures that the computational state of the blockchain remains consistent and trustworthy according to its protocol rules. Maintaining integrity is fundamental for the reliability and security of decentralized applications. It guarantees that the network behaves as expected.
Context ∞ In multi-layered blockchain architectures, particularly with rollups, execution layer integrity is a primary concern for ensuring the security of off-chain computations. Debates often focus on the mechanisms used to verify this integrity, such as fraud proofs or validity proofs, which confirm that transactions were executed accurately. Sustaining high execution layer integrity is paramount for user confidence and the overall stability of the blockchain ecosystem.