Mathematical and Computing Science News

SimBlock: A simulator for testing improvements to real-world blockchain networks

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July 4, 2019

Visualization of a blockchain network, © OpenStreetMap contributors

Visualization of a blockchain network, © OpenStreetMap contributors

Kazuyuki Shudo, his colleagues(1) and the Cybersecurity Research Center at Tokyo Tech developed a public blockchain simulator called "SimBlock別窓" for use in testing blockchain performance and security. The software can run on a single PC. It is now publicly available as open source.

SimBlock allows a user to simulate a blockchain network consisting of a large number of nodes (servers), and modify behavior of the nodes to test effects on performance and security. Users can simulate the impact of changes to an existing blockchain, such as Bitcoin, or to a blockchain of their own design.

(1) Team members : Yusuke Aoki (2nd year master's student in FY 2018), Ryohei Banno (researcher), Takeshi Kaneko (1st year master's student), Ryunosuke Nagayama (1st year master's student), Kai Otsuki (1st year master's student), Kazuyuki Shudo
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