Analysis of Committee Selection Mechanism in Blockchain

TL;DR

This paper analyzes the committee selection mechanism in blockchain, focusing on its mathematical limitations and the trade-offs between efficiency, security, and practicality in open networks.

Contribution

It provides a detailed examination of the mechanism's mathematical form and discusses the implications of using it in open blockchain networks.

Findings

Limited mathematical form of the mechanism affects security and practicality.

Using the mechanism in open networks increases efficiency but reduces security.

Trade-offs between efficiency and security are critical in mechanism design.

Abstract

The Committee Selection Mechanism can select multiple users of blockchain network to execute a consensus algorithm, such as PBFT. In order to guarantee two properties, the mathematical form of the mechanism is relatively limited. Further, if the mechanism is used in open network, it will bring about an increase in efficiency, but it will reduce the security and practicability of the blockchain network.