Hide your bought coins from taxauthorities

[wiser]

There's a lot of bad advice on this thread. It is an illusion that cryptocurrencies can't be tracked. Digital transactions leave way more of a trail than cash does. If you have enough crypto-wealth that you're concerned about how much your tax bill is going to be, then consult with a competent professional tax adviser or accountant who understands cryptocurrencies and trading in general. A good tax accountant can help you find legitimate discounts and loopholes, but you shouldn't deliberately break the law.