I'd not try to evade tax, after all, crypto is like other things such as stocks, if I gained I'd pay tax, just as other things.
Exactly when you earn then you have to pay tax be it any country unless the country has a tax free system. I am really clueless why would OP like to evade a tax from the earning which is provided by their government. If that is the case why would govt allow such things to happen they can discontinue it.