BPVis:面向DPoS区块链网络安全态势感知的可视化系统

基于委托权益证明(delegated proof of stake, DPoS)的区块链网络因其出色的性能表现而备受开发人员关注，进而对其区块链网络的安全与稳定性提出了更高的要求。为满足对于区块链网络监控与分析的的需求，根据DPoS共识机制实际应用过程中的分析，提出了面向DPoS区块链网络安全态势的可视分析方法。建立了节点稳定性与网络稳定性量化方法、网络价值预测模型，针对节点地理位置分布、网络价值走势、节点与网络整体稳定性演化以及细节查看等方面设计了多个可视化视图，面向区块链网络安全态势分析实现了交互式可视化系统，支持从多个角度对区块链网络进行探索。最后通过案列分析与用户评估验证所提方法与系统的有效性与实用性，结果表明所提方法能更好地协助使用者分析区块链网络安全态势。

BPVis: visualization system for security situation awareness of blockchain network based on DPoS

The blockchain network based on DPoS(delegated proof of stake) has drawn the attention of developers due to its outstanding performance, which places more demands on the network''s operational safety and reliability. To meet the demand for blockchain network monitoring and analysis, this paper proposed a visual analysis method for DPoS blockchain network security situation based on analyzing the application of DPoS consensus mechanism. It established the peer stability and network stability quantification method and network value prediction model. It also designed several visualization views for peer geographic location distribution, network value trend, peer and network overall stability evolution, detail view, etc. It implemented an interactive visualization system for blockchain network security posture analysis, which supported exploring blockchain network from multiple perspectives. Finally, it verified the effectiveness and practicality of the proposed method and system through case study analysis and user evaluation, and the results show that the proposed method can better assist users in analyzing the blockchain network security situation.