Sequencer selection refers to the process by which a specific entity or set of entities is chosen to order and batch transactions in a Layer 2 rollup or similar scaling solution. This mechanism is critical for determining transaction finality and preventing malicious ordering. It ensures a consistent and verifiable sequence of operations.
Context
The design of sequencer selection mechanisms is a central topic in the development of Layer 2 solutions, particularly concerning decentralization and censorship resistance. Debates often address whether sequencers should be centralized for efficiency or distributed for security and fairness. Innovations in sequencer selection aim to optimize both performance and the integrity of off-chain transaction processing.
Staked Randomness Sequencer (SRS) uses VRF-weighted stake to select L2 sequencers, eliminating the single point of failure and unlocking true censorship resistance.
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