*6.1. Basic Experimental Settings*

Table 3 shows the configuration of the testing machines that we use to perform these experiments. We use six computers, each with identical configurations: three of them are used as blockchain nodes, one of them as the remote DB server. and the other two as Performance Traffic Engine (PTE) [45] machines for sending transactions to the blockchain networks. Table 4 lists the settings for blockchain networks.

**Table 3.** Testing machine configuration.


**Table 4.** Blockchain network settings.

