You need to plan this very careful. Next question is, what exactly is it you need to convience the tax office about? That this company is real even though it is setup with darks or that this is real but not your company?
It would be of great help to know what exactly it is you want to do?
DARKS are a great way of anonymizing a company and it works well for most parts of business but when it comes to the tax office or to banking things get a little more complicated and at least you need to pay attention to how to setup things the right way.