Bitcoin and criptocurrency, instructions for Use

"We have been used to the virtuality of a currency for a long time. Therefore, the big news of this new financial phenomenon is another: no issuance by a state, nor by a central bank. The only law that determines their listing is the market. [...] "

This article offers a brief history of cryptocurrencies, what they are today and what risks and opportunities involve the use and, above all, the buying and selling of these totally virtual currencies. What is interesting for the future is the new Blockchain technology which is the basis of their creation and which will have more and more applications outside of them.