I'll pass & let one of the many more tech savvy ppl here explain or bitlotto himself maybe, btw bitlotto we're at 1 week from results having been announced tomorrow & 10 days from the draw (*hint, hint - winner's payments - cough, cough*)

Edit: kbf also check the 'How the hashes are done for pools' link in my post above or on the BitLotto site which explains how it all works I believe.