#BTCRebound

Here's a 100-word overview of cryptocurrency:

Cryptocurrency is a digital or virtual currency secured by cryptography. Transactions are recorded on a decentralized, public ledger called a blockchain. Key features:

- Decentralized: No government or institution controls it

- Digital: Exists only online

- Limited supply: Most cryptocurrencies have a capped supply

- Secure: Transactions are encrypted and verified

Examples of popular cryptocurrencies include Bitcoin, Ethereum, and Litecoin. Cryptocurrencies offer an alternative to traditional fiat currencies and have sparked innovation in the financial technology (fintech) industry.