I have some US dollars. Let's say $100,000.
If I wanted to hold that much in Bitcoins, what is the recommended way? Not in a central bank, because I need to control my wallet.
But on my computer? How do I prove that a virus in a flash add on a website doesn't break in and start reading local data looking for a bitcoin wallet?
Offline, burnt on a CD/DVD? Do I need to worry about bitrot? How do I prevent that?