比特币现金（BCC/BCH）是2017年8月1日由于比特币扩容争端而硬分叉出来的一个比特币变种。2017年7月20日，全球比特币矿工投票，有近97%的矿工选择支持比特币改进动议BIP91，计划激活隔离见证（Segregated Witness，SegWit）功能。
Bitcoin Cash (BCC/BCH) is a Bitcoin variant from August 1, 2017, due to a dispute over Bitcoin expansion. On July 20, 2017, almost 97% of miners worldwide voted in favour of Bitcoin Improvement Motion BIP91, with plans to activate the Segregated Witness, SegWit.
比特币区块链第478558号区块成为最后一个共同认可的区块，而新的478559号区块成为新的比特币现金第一号区块。比特币现金钱包利用一个定时机制选择在分叉之日拒绝接受主流比特币BTC的区块。
The Bitcoin block number 478558 becomes the last commonly recognized block, while the new block 478559 becomes the new bitcoin cash block number one. Bitcoin cash wallets use a time-bound mechanism to select blocks that reject the mainstream Bitcoin BTC on the day of the split.
比特币现金最大的特点是完全继承原比特币设计和技术构架，只是简单地将区块链区块大小从原来的1MB扩容到8MB。2017年7月23日，比特币现金BCC期货价格是0.5BTC，分叉当日价值下降到0.1BTC。
The biggest feature of Bitcoin's cash is its complete succession to the original bitcoin design and technology architecture, simply increasing the size of the block chain from the original 1MB to 8MB. On July 23, 2017, Bitcoin's cash BCC futures price was 0.5 BTC, the value of which fell to 0.1 BTC on the day of the split.
硬分叉出来后的比特币现金和原来比特币区块链的主要差别如下（截至2017年8月8日）：
The main differences between the cash bitcoin and the original bitcoin block chain after the hard split came out were as follows (as at 8 August 2017):
·硬分叉后有243个区块被挖出（开挖区块数量比原链少904块）；
· 243 blocks were excavated after the hard fork (904 blocks less than the original chain);
·新比特币现金区块链的运营难度只是原链的13%；
:: The difficulty of operating the cash block chain in New Bitcoin is only 13 per cent of the original chain;
·原链的区块链大小增长比比特币现金链多了920.19MB；
· The size of the chain of blocks in the original chain is 920.19 MB more than the bitcoin cash chain;
·挖比特币现金的收益比挖原链的收益高30%。
:: The proceeds from the digging of bitcoin are 30 per cent higher than the proceeds from the digging of the chain.
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