Digital currency reduce risk, Zug immediately converts any bitcoin received into the Swiss currency.Swiss Federal Railways, government-owned railway company of Switzerland, sells bitcoins at its ticket machines. UK The Chief Scientific Adviser to the UK government advised his Prime Minister and Parliament to consider using a blockchain-based digital currency. The chief economist of Bank of England, the central bank of the United Kingdom, proposed abolition of paper currency. The Bank has also taken an interest in bitcoin. In 2016 it has embarked on a multi-year research programme to explore the implications of a central bank issued digital currency. The Bank of England
World currency desire for a new supranational reserve currency by showing off a coin minted with the words "unity in diversity". The coin, an example of a future world currency, emphasized his call for creating a mix of regional currencies as a way to address the global financial crisis. On 30 March 2009, at the Second South America-Arab League Summit in Qatar, Venezuelan President Hugo Chavez proposed the creation of a petro-currency. It would be backed by the huge oil reserves of the oil producing countries. An alternative definition of a world or global currency refers to a hypothetical single global currency