The world of cryptocurrency is fascinating, and the potential implications of its technology are far-reaching. But what is cryptocurrency, exactly? Cryptocurrency is a digital or virtual currency that uses cryptography for security. A key feature of cryptocurrency is that it is decentralized, meaning it is not subject to government or financial institution control. Cryptocurrencies first came to prominence in 2009 with the launch of Bitcoin, the first and still most well-known cryptocurrency. Since then, hundreds of different cryptocurrencies have been created, each with its own unique features and functionality. Cryptocurrencies are often traded on decentralized exchanges and can also be used to purchase goods and services.