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Implementing a blockchain from scratch: why, how, and what we learned

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Figure

Table 1 Comparison of available implementations and their properties at the time of selecting basis implementations (September 2017)and our work for comparison
Figure 1 shows our system and its main components. Eachparticipant has a node installed in their home which runsthe blockchain node software as well as a portable appwhich allows sending commands to the node, in particu-lar to send and receive portions of
Fig. 2 Program overview: The mining thread as well as up to n server threads and up to n client threads operate on the core tree data structurerepresenting the blockchain and the state table representing the assignments of portions
Fig. 3 Connection times in milliseconds (ms) for regular sockets and TLS-based sockets

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