Yeah, I'll add a description to our FAQ.

Actually, the reason it was done server-side is that it actually calls the live roll-generation code with the parameters supplied by the verification page. I opted for this method in order to make 100% that there are no divergences between actual betting and verification code.

So given the above, I'd prefer to actually keep it server-side. Do you see a problem with this as long as I supply the exact method used to calculate the bet outcome so you can verify that it's correct and (optionally) implement this verification on your site?

Please don't get me wrong. I have no problem doing this client side, but I think there's a certain charm (code-wise) when the verifier calls the actual code which is used during live-betting.