Title
Node Criticality Assessment in a Blockchain Network
Abstract
Blockchain systems are being rapidly integrated in various technologies, with limited work on the effect of the underlying network topology on the blockchain performance. In this work, we investigate the significance of each network node on the overall blockchain performance. This is assessed by selecting critical nodes according to different criticality metrics, and investigating, using simulations, the degradation in performance incurred upon removing these nodes. The most critical nodes are the ones that incur the greatest degradation in performance. The considered performance metrics are the blockchain size and the packet drop rate. Criticality metrics such as Betweennes Centrality, Closeness Centrality and Degree Centrality are compared. It is found that the Sign Change Spectral Partitioning approach, enhanced with Blockchain Specific traffic flow information, is able to identify critical nodes better in the sense that higher degradation in performance is reported upon their removal.
Year
DOI
Venue
2019
10.1145/3362744.3363343
Proceedings of the 2nd Workshop on Blockchain-enabled Networked Sensor
Keywords
DocType
ISBN
blockchain, blockchain attacks, blockchain security, network analysis, node criticality
Conference
978-1-4503-7012-7
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Aditya Shyam Bazari100.34
Akash Aggarwal200.68
Waqar Asif3299.12
Marios Lestas412017.84
Muttukrishnan Rajarajan559361.50