What is cryptocurrency, how does it work and why do we use it?

Cryptocurrency is a form of digital money that is designed to be secure and, in many cases, anonymous. Allso cryptocurrency is a medium of exchange like normal currencies such as USD, but designed for the purpose of exchanging digital information through a process made possible by certain principles of cryptography. The first cryptocurrency was Bitcoin. Bitcoin was created in 2009 by a pseudonymous developer named Satoshi Nakamoto. Bitcoin uses SHA-256, which is a set of cryptographic hash functions designed by the U.S National Security Agency. Bitcoin is a cryptocurrency that is based on the proof-of-work system. The security of cryptocurrencies is two part. The first part comes from the difficulty in finding hash set intersections, a task done by miner a digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank