AussieMat
Your offer of that additional 2500 USD shows that you are seriously trying to gain attention. I was ignoring this thread and now I came because it looks interesting, I read every post.
Why can't you patent it? Is your country the problem? Maybe it's better to travel to other countries to patent it? Patenting is your best bet to my mind.

Besides this forum, have you tried LinkedIn? Some crypto casinos are on LinkedIn and you can contact their HR, developers, marketers and even CEOs. If I were you, I would try LinkedIn. Connect with many crypto casino employees, HRs and CEOs and then make a similar post on LinkedIn.

I also think that it will be easier for you to contact small casino owners, for example, try to contact Bustabit and Bustadice owner - leomedina