Digital currency destabilizing effect on the Chinese Yuan currency due to speculation. Recent interest in cryptocurrencies has prompted renewed interest in digital currencies, with bitcoin, introduced in 2008, becoming the most widely used and accepted digital currency. According to the European Central Bank's 2015 "Virtual currency schemes – a further analysis" report, virtual currency is a digital representation of value, not issued by a central bank, credit institution or e-money institution, which, in some circumstances, can be used as an alternative to money. In the previous report of October 2012, the virtual currency was defined as a type of unregulated, digital money,
Currency War of 2009–11 fast that it would lead to social unrest in China, bankruptcy for export dependent companies and "disaster for the world". In October, China posted a record surge in its foreign exchange reserves, which was seen as a "target around the neck of China’s exchange rate regime" in the effort to get the country to allow its currency to appreciate. In reaction, Geithner suggested China’s attempts at limiting gains were the reason for capital controls and currency-market interventions in other emerging economies. "What’s happening is, as China holds its currency down, their currencies are moving up and they’re having to work