How do you even cash out that amount of money? I think it is misleading to just multiply the number of coins with the market price for a small amount of coins.

How do you even cash out that amount of money? I think it is misleading to just multiply the number of coins with the market price for a small amount of coins. The purcasing power is likely to be a lot less than $1 billion. Also, I imagine I got a ton of Dogecoins from speculation, mining, whatever. I just to go to my regular exchange and try to withdraw a million. Probably need to do a lot of extra KYC paperwork, but OK. But then, how do I convince the authorities that this is not some laundered crime money?