Mathematical and Computing Science News
Kazuyuki Shudo, his colleagues(1) and the Cybersecurity Research Center at Tokyo Tech developed a public blockchain simulator called "SimBlock" 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.