The Bitcoin system is said to be reaching its capacity limits - spelling a possible disaster for thousands of those who decided to invest in the world's top cryptocurrency. One of the leading programists from the company quits it, selling all of his Bitcoins and calling it a "failed experiment". On the other hand, with the growing number of Bitcoin users, even politicians and bankers can't anymore deny its importance in the financial and digital world. Can the Bitcoin solve its problems, or it is the end of the road for the virtual money giant? We ask executive director of the Bitcoin Foundation - Bruce Fenton is on Sophie&Co.