I am not asking for any investment, so I see no urgent need to prove anything to anyone.
I can understand your point of view, but again I doubt anyone would accept your words at face value since you're new on this forum. Giving proof that you do have a business that is running and doing what you've described in your post is one of the ways you can increase your credibility. You can choose not to and wait until someone ask for private communication or something else, it is not mandatory. If you plan to hire and post on the Services board though, I doubt you'll get far without at least doing something similar as I mentioned above.
Anyway, best of luck to you OP.