Leader-based consensus protocols designate a specific network participant to propose the next block or transaction order. In these systems, a leader is selected through various mechanisms, such as staking weight or a round-robin schedule, to create and disseminate a new block. Other network nodes then verify the proposed block’s validity and collectively attest to its inclusion in the ledger. This approach often prioritizes transaction throughput and finality by streamlining the block production process.
Context
News frequently covers leader-based consensus in the context of high-performance blockchains aiming for increased transaction speeds and lower latency. While these protocols can offer efficiency advantages, debates sometimes arise regarding potential centralization risks if leader selection becomes concentrated among a few entities. Developments in rotating leader election schemes and robust fault tolerance mechanisms are key areas of ongoing research and implementation. The design choices for leader selection significantly impact a network’s decentralization profile and security.
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