Digital currency of its creators. "Forbes" writer Tim Worstall has written that the value of bitcoin is largely derived from speculative trading. Bitcoin has also been criticised for its energy inefficient SHA-256-based proof of work. Digital currency Digital currency (digital money, electronic money or electronic currency) is a type of currency available in digital form (in contrast to physical, such as banknotes and coins). It exhibits properties similar to physical currencies, but can allow for instantaneous transactions and borderless transfer-of-ownership. Examples include virtual currencies and cryptocurrencies and central bank issued money accounted for in a computer database (including digital base money). Like
Currency War of 2009–11 relaxing some of Brazils anti-appreciation controls. Alarms were raised concerning a possible second 21st currency war in January 2013, this time with the most apparent tension being between Japan and the Euro-zone. Following the financial crisis of 2008 widespread concern arose among advanced economies concerning the size of their deficits; they increasingly joined emerging economies in viewing export-led growth as their ideal strategy. In March 2009, even before international cooperation reached its peak with the 2009 G-20 London Summit Economist Ted Truman became one of the first to warn of the dangers of competitive devaluation breaking out. He also coined