Did anyone mention that you do not have to file taxes as long as you do not make over a certain amount? even if you solved 1 block youself, you still would not have made enough to pay any taxes in any state. this also assumes you do not make any money elsewhere.
But the easy solution is to simply "forget" that you made money via bitcoin when the 1st rolls around

$600 is the taxable minimum. A block = $13.6 x 50 = $680. And technically, since you received the "value" of those "credits" during the tax year, even though you didn't sell them, you should report it as income with the basis equal to the value of the coins at the time of acquisition.