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 intervening on a wider scale back in 2009. George Soros expressed concern saying "I share the growing concern about the misalignment of currencies. Brazil’s finance minister speaks of a latent currency war, and he is not far off the mark. It is in the currency markets where different economic policies and different economic and political systems interact and clash." Considerable attention had been focused on China. For much of 2009 and 2010, China has been under pressure from the US to allow the yuan to appreciate. Between June and October 2010, China allowed a 2% appreciation of the yuan, but