UPDATE 1-Bitcoin plummets to a six-month low on China crackdown <!-- no image --> <div>Bitcoin slumped to a six-month low on Friday after China's central bank launched a fresh crackdown on cryptocurrencies, warning of the risks entailed in issuing or trading them.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=jEA8iu0KBhY:r-2wdkpb3aI:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=jEA8iu0KBhY:r-2wdkpb3aI:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=jEA8iu0KBhY:r-2wdkpb3aI:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=jEA8iu0KBhY:r-2wdkpb3aI:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=jEA8iu0KBhY:r-2wdkpb3aI:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/jEA8iu0KBhY" height="1" width="1" alt=""></div> Posted by Reuters