From the beginning of time, money has been an important part of both personal and professional lives. As technology has improved, digital currencies have become more popular than others. So let's learn more about it in Lars Winkelbauer - The Future of Crypto - Trends and Projections. Cryptocurrency Cryptocurrency is a digital currency. It works with blockchain technology. It uses cryptography to keep transactions safe and track how many new units are made. There is no central authority that maintains a record of all transactions. So, everyone can see them.