> For example, you hold 100 bitcoins. Randall Munroe's wrench hacker holds you up for bitcoin because he knows you have some. You give him 0.1 from an address.

> For example, you hold 100 bitcoins. Randall Munroe's wrench hacker holds you up for bitcoin because he knows you have some. You give him 0.1 from an address. Keeping your crypto holdings secret would appear to be basic OpSec, just as one would do if you had to carry significant cash, precious metals, gemstones... Hard to brag about your holdings on social media if you're not allowed to tell anyone, though.