What is Bitcoin?
The first and most well-known cryptocurrency, explained simply.
Beginner 3 min readUpdated 5/27/2026
Bitcoin (BTC) is the first cryptocurrency, launched in 2009. It's a global, decentralized network for sending and storing value without a central authority.
- Limited supply. Only 21 million bitcoin will ever exist, which is why many people compare it to "digital gold".
- Decentralized. No company or government controls Bitcoin; it's maintained by thousands of computers worldwide.
- Volatile. Bitcoin's price can rise or fall sharply. It is not a savings account and is not guaranteed.
Bitcoin is divisible — you can buy a small fraction, not a whole coin.
This article is educational and is not financial advice. Crypto is volatile and trading involves risk.