A cryptocurrency is a digital or virtual currency that uses cryptography for security. Unlike traditional currencies issued by governments, cryptocurrencies are decentralized and run on blockchain technology.
A blockchain is a distributed ledger that stores all transactions in the form of cryptographically interconnected blocks. This ensures the transparency and immutability of the data bitcoinmke.org.
Bitcoin, the first and most famous cryptocurrency, was created in 2009. Since then, thousands of other cryptocurrencies have appeared, each with its own characteristics and goals.