Cryptocurrencies are digital assets built on blockchain technology. Unlike fiat currencies issued by central banks and governments (such as the yen or dollar), they rely on cryptography to secure transactions. Thousands of cryptocurrencies exist worldwide, including Bitcoin (BTC), Ethereum (ETH), and XRP.
The crypto market has grown rapidly in recent years, driven by institutional adoption and the approval of ETFs. Bitcoin (BTC), for example, has shown a long-term upward trend and reached an all-time high in 2025.
Cryptocurrencies are increasingly viewed as an inflation hedge and a portfolio diversification tool. They trade 24/7 and can be started with small amounts, making them worth considering as part of an investment strategy.