Cryptocurrency: How Math Replaced the Bank - Simple Things

Cryptocurrency is a digital technology that fundamentally changes how we think about trust, value, and the internet. In this video, we explore how a mysterious nine-page document solved a decades-old puzzle and sparked a massive global financial ecosystem.

This documentary-style episode from Simple Things Surprising Histories tells the fascinating story of the "double-spending problem," the invention of the blockchain, and how digital money operates without a central authority or middleman.