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Fast finality

Linea supports enterprises with options to deploy networks that provide instant finality.

Standalone Linea Enterprise​

As a Standalone or Layer 2 blockchain, instant finality is guaranteed by Linea’s block production protocol both when running a single validator (sequencer) or when running multiple validators with Quorum-Based Byzantine Fault Tolerance (QBFT) consensus.

Layer 2 Linea Enterprise​

As a Layer 2 (L2) blockchain, zero knowledge validity proofs supplied by the prover provide instant L1 finality for the entire L2 state being committed, as soon as the block on which they are posted is finalized, without the need for challenge windows.

Finality time as a operator decision​

Enterprise Linea L2 network soft finality is reached instantaneously at the block boundary. The Public network operators set this block boundary to once every 2 seconds, however, operators may choose 1 second, or lower.

When running a single validator, block production is not impacted by network conditions. When running a set of validators, congestion on the validator network may lead to accrued block validation time, however consensus always guarantees that a validated block is final.

Next steps​