Cryptocurrencies are not physical coins.

Cryptocurrencies, like Bitcoin and Ethereum, exist purely in digital form and do not have a physical presence like traditional paper money or metal coins. Instead, they are stored in digital wallets and transacted over the internet using blockchain technology. This digital nature gives cryptocurrencies unique properties such as decentralization, security, and borderless transactions. The value of cryptocurrencies is determined by market demand and supply dynamics, and they have gained popularity as an alternative form of currency and investment in the modern digital age.