A call to crypto millionaires

Hi. I bought cryptos in 2012 and I've been hodling all this time in deep cold storage. I'm what you would call a crypto millionaire. I'd like to know what other people in my situation are doing regarding the tax man. Do you disclose your holdings? All? Some fraction? Nothing? What are your future plans? What if your net worth goes 10x or 100x or 1000x in the upcoming years? How are you preparing? Do you have or plan to have some kind of corporate structure to handle your wealth? If so, in which country/ies?