But no one will play if the game isn't provably fair. What is your plan to show that?
I agree with Vod. You can also offer odds of 99.9% in your lottery, if you don't provide a mechanism to check the outcome of the lottery, you will hardly find any players. If you have never heard of "provably fair":
Quote
In online gambling provably fair describes an algorithm which can be analyzed and verified for fairness on the part of the service operator[...] Provably fair algorithms are often used in the operation of an online casino.
Source
(Yes I know, you shouldn't quote Wikipedia, but the paragraph sums up the meaning very well Source
)You can see for example here for Bustadice how "Provably Fair" works and how it was implemented.
We can prove that we are fair, but the game that we are introducing doesn't require that because the winner is decided by the users. If there no house edge what's the point of proving fair. casinos have house edge of 1%