Bitcoin
The largest cryptocurrency by market value.
Bitcoin is a digital currency launched in 2009 that runs on a public network with no central bank. Its supply is capped at 21 million coins.
Bitcoin and DCA
Bitcoin is far more volatile than stocks, with several drops of over 70% from a peak. That makes it one of the most popular assets to buy in small, regular amounts, sometimes called "stacking sats".
Treat it as a high-risk part of a plan, and check the fees your exchange charges on recurring buys, which can be much higher than stock brokers charge.