I was thinking about this topic and I think op should implement his provably fair system on some demo casino. That way would be easier to explain to casinos how does the New provably fair system works.
I could help on this, I have a casino software with 4 games, if you want send me a PM and we ca find the way to works together.
This is not a bad idea. OP has shown a willingness to put their money where their mouth is (although without funds being escrowed it is just words). I doubt many large casino executives care about $2500 though. That may be a big amount of money for you or I, but to someone with millions coming in, it honestly probably isn’t an incentive. Going at it along and building a player base might be the best way forward.
It is more the fact that the user is willing to put some money forward just as you say, so he show confidence in the product he is delivering or selling, but it is unclear to me how useful that may really be in practice. How much are larger sites willing to pay for such a system? Is it really worth the hassle in terms of users that can really care about verifying the proof in depth?