Digital currency payment transfer in order to facilitate easy payment and give the payee more confidence in not letting go of their electronic wallet during the transaction. A cryptocurrency is a type of digital asset that relies on cryptography for chaining together digital signatures of asset transfers, peer-to-peer networking and decentralization. In some cases a proof-of-work or proof-of-stake scheme is used to create and manage the currency. Cryptocurrencies allow electronic money systems to be decentralized. The first and most popular system is bitcoin, a peer-to-peer electronic monetary system based on cryptography. A virtual currency has been defined in 2012 by the European
Currency War of 2009–11 dollar float freely. While the US has taken no direct action to devalue its currency, there is close to universal consensus among analysts that its quantitative easing programmes exert downwards pressure on the dollar. According to many analysts the currency war had largely fizzled out by mid-2011, though others including Mantega disagreed. As of March 2012, outbreaks of rhetoric were still occurring, with additional measures being adopted by countries like Brazil to control the appreciation of their currency. Yet by June, there were signs that currency misalignment had been levelling out in China and across the world, with even Mantega