Welcome to the “Blockchain Basics” video course designed to educate on the background of blockchain technology and its foundation in cryptocurrencies. In this course, which comprises three video lessons, viewers will learn the basics of how blockchain works and its role as the foundation of cryptocurrencies such as Bitcoin and altcoin. In addition, it highlights their benefits and downsides in the developing practical applications of this new, emerging technology. Ultimately, learners should have a basic understanding of the mechanism behind blockchain technology, how a Bitcoin or altcoin transaction works, and know the reasons why cryptocurrency has an uncertain future.