It is very simple to pay taxes on cryptocurrency in the United States. It is treated as property in the IRS's mind. So you would handle it the same way you would handle gold or silver profit/loss. No further discussion necessary unless they change the law.
I think in the USA it's exactly as I described. Depending on the amount of time you hold it, you will pay more or less tax, so just hold your BTC from the time you receive it +1 year.
Just in case (because you never know when they will change laws...) try to keep every transaction logged and every trade. Im trying to do this and it's a mess trying to keep up with every tx but I try.