Bitcoin: what have experts said about the cryptocurrency? Share 刊登時間： 2018-02-09 11:20:01 | 瀏灠次數：13 Bitcoin’s gyrations have attracted a lot of attention over the past year. Here are some of the most memorable comments from senior figures in world finance. Yves Mersch Yves Mersch, a member of the European Central Bank’s executive board, called for a global clampdown on virtual currencies because of their threat to financial stability on 8 February. Bitcoin transactions can easily take several hours to process, he noted in a speech in London. At these speeds, if you bought a bunch of tulips with bitcoin they may well have wilted by the time the transaction was confirmed.” Agustín Carstens The new head of the Bank for International Settlements has described bitcoin as “a bubble, a Ponzi scheme and an environmental disaster”. “If authorities do not act pre-emptively, cryptocurrencies could become more interconnected with the main financial system and become a threat to financial stability,” he said in a speech on 6 February. Jamie Dimon JP Morgan boss Jamie Dimon said in mid-September that Bitcoin was a fraud that would ultimately blow up. He said the digital currency was only fit for use by drug dealers, murderers and people living in places such as North Korea. The boss of America’s biggest bank said he would fire “in a second” anyone at the investment bank found to be trading in bitcoin. He later softened his stance, and revealed on 9 January that his daughter had bought two bitcoins. Robert Shiller The Nobel prizewinning economist predicted on 26 January that bitcoin would not be a “permanent feature” of the financial world. Speaking at the World Economic Forum in Davos, Shiller hailed bitcoin as a “really clever idea”. I tend to think of bitcoin as an experiment. It is an interesting experiment, but it’s not a permanent feature of our lives.” Shiller has previously warned that the bitcoin price could collapse. “We are over-emphasising bitcoin, we should expand it out to blockchain, which will have other applications.” Warren Buffett The billionaire investor said on 11 January he would never invest in bitcoin or other cryptocurrencies, and predicted the wildly popular assets were in for a fall. “I can say almost with certainty that cryptocurrencies will come to a bad end,” Buffett told CNBC in an interview. Joseph Stiglitz The Nobel-prize-winning economist has argued that the currency should be outlawed. “It doesn’t serve any socially useful function.” Sir Howard Davies The chairman of Royal Bank of Scotland has painted an apocalyptic picture for bitcoin. He told Bloomberg TV on 8 December, after bitcoin hit $15,000 for the first time: Put up the sign from Dante’s Inferno – ‘Abandon hope all ye who enter here’ – I think that’s probably what’s needed.” Janet Yellen On 15 December, the former US Federal Reserve chair described bitcoin as a “highly speculative asset” and “not a stable source of value”, but noted it remained a very small part of the global payment system. She also reiterated her 2014 position that the Fed does not have the authority to regulate the cryptocurrency. Theresa May Theresa May said at the World Economic Forum in Davos that she was concerned criminals were exploiting digital currencies, which can be used to anonymously transfer funds. “In areas like cryptocurrencies, like bitcoin, we should be looking at these very seriously,” May told Bloomberg. Steven Mnuchin The US treasury secretary also flagged up concerns about misuse of digital currencies. “My number one focus on cryptocurrencies, whether that be digital currencies or bitcoin or other things, is that we want to make sure that they’re not used for illicit activities,” Mnuchin told CNBC.