bitcoin tax

Hello I have zero experience with (offshore) tax havens. I am, live and have tax domicile in an European country. My question is - is there a way to optimize (=pay less or ideally no tax) on ones (selling) of bitcoin/crypto...? The crypto would be legally obtained, one can prove its origin etc...

I was wondering the following. Because BitCoun and other CryptoCurrency is now recognized by any authority nor financial Service nor has it to be licensed to handle BitCoins then would it be right to say that we don't have to pay tax from BitCoun's. Say I sell a service on the internet for 3...