A recent spam wave of IP addresses in the Bitcoin P2P network allowed us to estimate the degree distribution of reachable peers in the network. The resulting distribution shows that about every second reachable peer runs with Bitcoin Core's default setting of a maximum of 125 concurrent connections and nearly all connection slots are taken. We validate this result and, in addition, use our observations of the spam wave to group addresses that belong to the same peer. By doing this grouping, we improve on previous measurements and show that simply counting addresses overestimates the number of reachable peers by 13 %.

翻译：Bitcoin P2P 网络中最近一波IP地址的垃圾邮件波让我们可以估计网络中可达同行的分布程度。 结果的分布显示, 大约每第二波可达同行在Bitcoin Core的默认设置下运行最多125个同时连接和几乎所有连接槽。 我们验证了这个结果, 此外, 我们用对垃圾邮件波的观测结果来组属于同一同行的地址。 通过进行这一分组, 我们改进了先前的测量, 并显示仅仅计算地址就高估了13 % 。