A committee selection mechanism is a protocol that chooses a subset of network participants to perform a specific task, such as validating transactions or proposing blocks. This method is often used in sharded blockchains or delegated proof-of-stake systems to distribute workload and enhance scalability. The selection process typically incorporates randomness and stake-weighting to ensure fairness and resistance to collusion. It is a vital element for maintaining network integrity and efficiency.
Context
The effectiveness of committee selection mechanisms is a central concern for scalable blockchain architectures, particularly those employing sharding. Developers constantly refine these mechanisms to balance security, decentralization, and performance. Ensuring that committees are sufficiently random and resistant to adversarial control remains a primary research area, directly impacting the long-term viability of high-throughput decentralized networks.
Prioritized MVBA introduces a committee selection primitive to slash communication complexity from cubic to quadratic, enabling truly scalable asynchronous consensus.
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