“Crypto” is short for cryptocurrency, a type of digital or virtual money that uses cryptography for security. Unlike traditional currencies (like dollars or euros), most cryptocurrencies are decentralized and operate on blockchain technology — a public, distributed ledger that records all transactions.

Here are some key points about crypto:

1. Bitcoin was the first cryptocurrency, created in 2009. It’s still the most well-known and valuable.

2. Other major cryptocurrencies include Ethereum, Solana, Ripple (XRP), and Cardano.

3. Cryptocurrencies can be used to buy goods and services, but many people also invest in them.

4. Transactions are typically pseudonymous, meaning they don’t require real-world identities.

5. Crypto prices can be very volatile — they can rise or fall quickly.

6. Some cryptocurrencies support smart contracts, which are self-executing contracts with code-based rules.