and a growing number of coins are in circulation in that market capitalization is currently about one hundred seventy billion euros. and that number is growing and so are those security concerns for crypto currency holders. news of hacks every few weeks and whole countries are now creating their own digital currencies take venezuela and the patriot it was designed by the country's president nicolas maduro to get around the latest u.s. sanctions put in place by this guy at the moment a crypto currencies success depends a lot on how easily it can be converted into standard currencies whatever the case traditional lenders and central bankers are increasingly worried about their relevance in the digital future. the bank for international settlements in basel is the bank for central banks it