Bitcoin (BTC)
First and largest cryptocurrency, digital gold capped at 21M coins.
Bitcoin: launched Jan 3, 2009 by Satoshi Nakamoto. PoW consensus, 10-min blocks, 21M cap, halving every 4 years. ~19.8M mined. Crypto value standard. Most secure and decentralized network.
In plain words
The first crypto, created in 2009 by anonymous Satoshi. Max supply ever = 21 million coins, hard-coded and unchangeable. This is its biggest strength. More demand = higher price, since no new BTC can exist beyond the cap.
Example
2010 start: $0.003. ATH 2021: $69k. ATH 2024: $73.7k. Avg yearly ROI: 200%. Worst 2022 (-65%). Best 2017 (+1300%).
Also known as: BTC, bitcoin, Satoshi, cyfrowe złoto