论文标题
阻止预扣弹性
Block withholding resilience
论文作者
论文摘要
一段时间以来，在比特币协议中实施的中性共识并不完全与参与者的个人利益保持一致。更确切地说，已经表明，预扣挖掘策略可以利用协议的难度调整算法并获得不公平的优势。但是，我们表明，考虑到孤儿块的难度调整公式的修改使诚实的挖掘成为唯一的最佳策略。令人惊讶的是，当孤儿块获得较小的官方奖励奖励时，这仍然是正确的。这给了信号孤儿块的激励措施。结果与攻击者的连通性无关。
It has been known for some time that the Nakamoto consensus as implemented in the Bitcoin protocol is not totally aligned with the individual interests of the participants. More precisely, it has been shown that block withholding mining strategies can exploit the difficulty adjustment algorithm of the protocol and obtain an unfair advantage. However, we show that a modification of the difficulty adjustment formula taking into account orphan blocks makes honest mining the only optimal strategy. Surprinsingly, this is still true when orphan blocks are rewarded with an amount smaller to the official block reward. This gives an incentive to signal orphan blocks. The results are independent of the connectivity of the attacker.
