Although, it is in every nation's law that all forms of income should be taxed, I do not think income earned from bitcoin can be taxed.
Bitcoin is a new technology and there has been no rules set yet for it to be taxed. It will be very hard to know how and when it should be taxed.
Besides, the fact that bitcoins transactions are done anonymously makes it very difficult to trace and taxed.
However, I still think if certain conditions are met, there could be a way bitcoin can be taxed
It does not matter what it is, or how new it is, or if their is rules in place. ALL income must be reported (at least here in the US) to the IRS
All income must be reported period! It's called "Income Tax" NOT "if you can prove it tax"
Bitcoin is not anonymous! It can be tracked and traced. I'll agree that no one can tell who owns each and every wallet, but that's not how you get caught. You get caught by selling coins to an exchange to be deposited into your bank. <----- This is when you get caught.
Banks must report deposits over 10k to the IRS, either keep the deposits low or actually claim the income and pay taxes on your investment.
If you want anonymous cryptocurrency look into Bitcorecoin, Clearcoin, Deeponion Coin, Shieldcoin, Monero, Verge, or Zen