It took computer scientists decades to develop cryptocurrency, a popular form of digital money. Today, there are hundreds of types of crypto, which use blockchain technology. One of the most popular types of crypto is Bitcoin. Many people who bought Bitcoin shortly after it was created in 2009 made fortunes. Other people lost money when Bitcoin's value dropped. Like many other types of crypto, Bitcoin's value is constantly changing. Some people buy crypto to purchase items such as movie tickets, video games, or groceries. Other people buy crypto hoping its value will go up over time. Part of The Digital Economy series, Cryptocurrencies, From Blockchain to Bitcoin is a guide for young people interested in learning more about these digital currencies.