The house edge for all vs bot games is 1%. I've explained the provably fair system before. Unlike other sites, where you win if the game is "green" and you lose if the game is "red", on flashflip, players can decide which outcome they want to bet on (heads or tails, etc.), and thus there is no advantage for us in changing the occurrence of certain results, since players will just switch to those instead. The house edge manifests itself in the amount returned to the player on a win, which is 98% of their bet on a 50/50 odds game. For every 200 bits wagered, players have an expected return of 198 bits, thus a 1% house edge.
Thank you for the time to explain the response,,, yes it was a good explanation for provably fair and in fact is a slight twist on the usual format. As you said, there is no reason for the house to change the occurence of results if players can realize and switch, but I think the issue here is how to prove that the server seed does not change in the day (which very few players will take the time to prove). So I guess what I say is that, your word is good, but players need to always test the calculations themselves.
1% is a good standard also. Maybe if it is possible in Slack some day you will implement loyalty bonuses to make this house edge even lower!