We have a bit different verification system to what you're talking about.
We do not generate hashes before each game. If you've done at least 5 bets, you could do the
randomization to see the previous client seed. This client seed could be used to verify previous bets you've played. Actual client seed is always hidden.
Seems a bit akward here if you dont display on the hashes before the game play. Displaying the seed
after bet would be pointless because there is a chance for the house to cheat
Lets put on the simple example here
Bet #1 player choose 1 result 1 player win, house could cheat by displaying 2 because the hashes is not shown before the game
bet #2 player choose 1 result 2 player lose
bet #3 player choose 1 result 3 player lose
bet #4 player choose 1 result 4 player lose
bet #5 player choose 1 result 5 player lose
After bet #5 the seed shown could be anything to match the result from bet #1 so that player could not really verify the result of it as the house could show whatever the seed is to match the cheated result
P.S : I may be wrong though
. Saying "client seed" I meant "server seed". Sorry for the misprint that drove you out of the actual implementation. Basically
on the randomisation page. After next randomisation procedure you have everything necessary to ensure that previous results were fair.