How can I enter tax-free coins? Let me give a few examples.

1. I let an exchange or some other kind of company keep coins on my behalf. The company goes bankrupt or at least stops operating. I book the coins as lost. I might not even have used CoinTracking then. Years later the company comes back to life and still has some of my coins. Since they have been held for more than a year, these coins should incur lower or no taxes. How can I book them into CoinTracking without falsely incurring fully taxable gains when I sell them soon thereafter?

2. I lose the key to a wallet and book the coins as lost. Years later I find the key again. Since I have held these coins for longer than a year, they should be taxed lower or not at all. How do I book these in CoinTracking?

3. I win bitcoins in a bet. Winnings from bets are tax-free in my country, so how do I book them in CoinTracking? Obviously they have to be included in FiFo calculations if at all applicable, i.e. when these coins are sold under a FiFo regimen, the sale should be tax-free.