To keep the block generation time equal to ten minutes on average, both Bitcoin and Bitcoin Cash use an algorithm adjusting the mining difficulty parameter. This algorithm is called the difficulty adjustment algorithm (DAA). Originally, both Bitcoin and Bitcoin Cash used the same difficulty adjustment algorithm, adjusting the mining difficulty parameter every 2016 blocks. Since 1 August 2017, Bitcoin Cash also used an addition to the DAA, called an Emergency Difficulty Adjustment (EDA) algorithm. EDA was used alongside the original DAA and it was designed to decrease the mining difficulty of Bitcoin Cash by 20%, if the time difference between 6 successive blocks was greater than 12 hours.[36]

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如果目的IP地址显示不是同一网段的,那么A要实现和B的通讯,在流缓存条目中没有对应MAC地址条目,就将第一个正常数据包发送向一个缺省网关,这个缺省网关一般在操作系统中已经设好,这个缺省网关的IP对应第三层路由模块,所以对于不是同一子网的数据,最先在MAC表中放的是缺省网关的MAC地址(由源主机A完成);然后就由三层模块接收到此数据包,查询路由表以确定到达B的路由,将构造一个新的帧头,其中以缺省网关的MAC地址为源MAC地址,以主机B的MAC地址为目的MAC地址。通过一定的识别触发机制,确立主机A与B的MAC地址及转发端口的对应关系,并记录进流缓存条目表,以后的A到B的数据(三层交换机要确认是由A到B而不是到C的数据,还要读取帧中的IP地址。),就直接交由二层交换模块完成。这就通常所说的一次路由多次转发。 [3] 

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“The arguments have devolved over three or four years of bitter debate, the principles are real and they are important to preserve, but a lot of the drama has nothing to do with principles anymore. A lot of this debate is now more about hurt feelings. It’s about bruised egos. It’s about things that were said that can’t be unsaid, insults that were exchanged, and personalities and ego.”

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Rising fees on the bitcoin network contributed to a push by some in the community to create a hard fork to increase the blocksize. This push came to a head in July 2017 some members of the Bitcoin community including Roger Ver felt that adopting BIP 91 without increasing the block-size limit favored people who wanted to treat Bitcoin as a digital investment rather than as a transactional currency.This push by some to increase the block size met a resistance. Since its inception, Bitcoin users had maintained a common set of rules for the cryptocurrency. Eventually, a group of bitcoin activists, investors, entrepreneurs, developers and largely China based miners were unhappy with bitcoin's proposed SegWit improvement plans meant to increase capacity and pushed forward alternative plans for a split which created Bitcoin Cash. The proposed split included a plan to increase the number of transactions its ledger can process by increasing the block size limit to eight megabytes. Bitcoin cash is not one of the fastest cryptocurrency per transaction. And it is good investment for economic crisis.

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