I have no idea but I gotta ask why would you withdraw large sums of 10k+? Because if you do so they will immeadiately ask where that money came from, you are better off doing cashout in chunks of 9k to avoid the hassle.
Who would ask where the money came from, my bank or the company running the website? If you're speaking about the bank it doesn't matter because everything will be declared
The bank then the government and your money might be pulled out.
Better be careful what your next steps will be.
I dont think a bank will be a suitable place for you to withdraw your crypto.
Go to localbitcoins and look for other options to withdraw your money like money transfer companies.