Digital currency, also known as cryptocurrency, operates using blockchain technology. It is a decentralized form of currency that is not controlled by any government or central authority. Transactions are recorded on a public ledger, ensuring transparency and security. Users can store their digital currency in digital wallets and transfer it to others electronically. Transactions are verified by a network of computers through a process called mining. Digital currencies can be used for online purchases, investments, and remittances, among other uses.