This is a case to case basis IF bitcoin is legal in your local place and some banks are accepted on it then, there is no problem on telling them the truth. There are some banks adopt cryptocurrency and accept even the money you have deposited is come from cryptocurrency profit but there are some others are very strict because they are relying upon the local jurisdiction that it is possible your money come from laundering.
How will you tell (or reveal) to your Bank that the huge daily (or weekly) deposits into your Bank Account are from crypto-currency profits?
- Would you go to your local Bank Branch and tell them ahead of time, that you are a crypto-currency investor BEFORE you make huge deposits?
- Would you go to your local Bank Branch and tell them that you are a crypto-currency investor AFTER you make huge deposits?
Observe first an ask information before you deposit, there are instances that might your money being froze/hold by them and even you are going to cash out you can't.