Even a comprehensive understanding of the laws and a good lawyer isn't enough in some countries if you're deemed an enemy of the state. Best just to be as low-key as possible.
In other words, don't declare any of your holdings that haven't been purchased through centralized exchanges. I have always learned: what the government doesn't know can't harm you. I am a firm believer of that and will continue to have that be my main principle in life. I have seen how people out of nothing landed themselves in big financial problems just because they out of nothing declared wealth they never declared before. Instead of governments being happy that people are willing to pay tax, they punish them like they are the worst criminals in the world. It's insane that this happens, which just shows who the actual criminals are....
That's my main principle too. You don't have to admit anything, and I've seen lots of people get themselves into trouble by trying to play the nice guy. The government is a pack of wolves and will jump at any opportunity to punish a wrong-doing nice guy, no matter how nice he is.
I wouldn't even be declaring centralized exchanges at this point unless they are based in the US. I think that they still are not obligated to report (but will be soon), so it's probably all under the table at this stage. It might be a good idea to move it out of there soon though to cold wallets.