Identifying Impacts of Protocol and Internet Development on the Bitcoin Network
Identifying Impacts of Protocol and Internet Development on the Bitcoin Network
复制标题
识别协议和互联网发展对比特币网络的影响
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Kazuyuki Shudo
中科院分区：
文献类型：
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作者：
Ryunosuke Nagayama;Ryohei Banno;Kazuyuki Shudo
提高交易吞吐量是比特币面临的一个重要挑战。然而，缩短块生成间隔或增加块大小以提高吞吐量会使其在网络内共享块的速度变慢，并增加孤儿块的数量。因此，牺牲了区块链的安全性。为了减轻这种情况，有必要减少块传播延迟。由于新的比特币协议的贡献和互联网的改进，近年来比特币网络中的块传播延迟已经缩短。在这项研究中，我们确定了紧凑块中继（一种最新的比特币协议）和互联网改进对2015年至2019年比特币网络中块传播延迟和分叉率的影响。现有的测量研究不能识别它们，但我们的模拟可以做到这一点。实验结果表明，紧凑的块中继有助于缩短块传播延迟比互联网的改进。由于互联网的改进，第50百分位数的块传播延迟减少了64.5%，第90百分位数的块传播延迟减少了63.7%，由于紧凑的块中继，第50百分位数的块传播延迟减少了90.1%，第90百分位数的块传播延迟减少了87.6%。
Improving transaction throughput is an important challenge for Bitcoin. However, shortening the block generation interval or increasing the block size to improve throughput makes it sharing blocks within the network slower and increases the number of orphan blocks. Consequently, the security of the blockchain is sacrificed. To mitigate this, it is necessary to reduce the block propagation delay. Because of the contribution of new Bitcoin protocols and the improvements of the Internet, the block propagation delay in the Bitcoin network has been shortened in recent years. In this study, we identify impacts of compact block relay—an up-to-date Bitcoin protocol—and Internet improvement on the block propagation delay and fork rate in the Bitcoin network from 2015 to 2019. Existing measurement studies could not identify them but our simulation enables it. The experimental results reveal that compact block relay contributes to shortening the block propagation delay more than Internet improvements. The block propagation delay is reduced by 64.5% for the 50th percentile and 63.7% for the 90th percentile due to Internet improvements, and by 90.1% for the 50th percentile and by 87.6% for the 90th percentile due to compact block relay.