The first digital money appeared in2008. The collapse ofbitcoin has been inconclusively predicted since 2011, but it is growing from year toyear. One ofthe active researchers ofthe phenomenon ofthis virtual currency, Joel Lopez Barata, mathematically calculated the possible cost ofbitcoin at the end of2018. The discrepancies inthe assessment ofhis predictions are embarrassing¿ the price ofacrypto currency may be from $ 13,200to$ 271,277.
