University of Twente Student Theses


Hide and seek : different scan methods to analyse peer-to-peer based blockchain networks

Stouten, Thomas (2020) Hide and seek : different scan methods to analyse peer-to-peer based blockchain networks.

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Abstract:Blockchain-based peer-to-peer networks have demonstrated that such mechanisms are able to provide a secure and trustworthy way to perform transactions without the need for an old-fashioned 3rd party. However, not many studies have focussed on tools for analyzing such systems on reliability. In this research, we have focussed on two such tools, a passive and active node scanner. Such scanners can be used to discover the discoverability and reachability of nodes in a blockchain-based network, with which the entire network can be mapped. We have placed these scanners in both the Bitcoin and Litecoin network, after which we have analysed and compared the different logs produced by these scanners. Both these scanners have shown their worth. The active scanner takes 20 minutes and is able to give an overview of the network while being unable to establish many connections with the discovered nodes. The passive scanner, which was placed in the network for 6 days, discovered more nodes within the Bitcoin network and was able to establish a connection with roughly 72% of these nodes. The passive scanner was unable to discover more nodes than the active scanner in the Litecoin network. However, it was still able to connect with roughly 76% of the discovered nodes. Both of these scanners produce capable and usable datasets. therefore it is task of researchers to make a choice based on the available time for research and on the need for reachability of these nodes.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science
Programme:Computer Science BSc (56964)
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