If you want to have a real business, you will need a way to accept incoming payments. I have a questions for you: How many serious banks in a world will accept Marshall Islands company with a bearer shares as a client? I have also anwer for you: None
Darks is something what is not safe way. If you does not know absolutely what you are doing, using a darks is a direct one way ticket to the prison. Darks are used just for remote bank account openning. There is absolutely none financial institution, which will open bank account for Marshall Islands company with bearer︀ shares remotely.
Doing business in the USA? Which kind of business? Services or physical goods?︁ Who are your customers? Other companies or physical persons?
Non US Bank will wire money︂ to recipient in Marshall Islands. Does not matter where will be the bank located. Wiring︃ bank needs to see a details of payment recipient. If you will ask any client︄ to wire money to account of Marshall Islands company, customers bank will deny to make︅ a wire and will inform federal authorities..
If you want anonymous structure for business in︆ the USA, it is possible, but it takes much more planning, some travelling and it︇ cost some money..
Why do you need anonymous company? Is it about taxes, or your︈ business is just not legal?
If it is about taxes, there are ways how to︉ does not be anonymous, but optimize taxes legaly.