This platform is been developed 100% from zero.
Are you sure if it is developed from zero? If you develop it yourself, how can there was early site use exactly the same script/software?
No offenses, but I do believe being honest is better. Most people do not care whether you bought a casino's software/script or developed yourself as long as you can give great experience to your players.
One more important thing, you are still in beta but you accepts investment already?
How if someone invest on your site then he lose the invested money due to a bug that may steal your bankroll?