As far as I can see, you have a tipping feature and I think it can be used to distribute the rewards for the winners on your outside contest like the one in this forum.
I mean, once you decide to have a contest here in this forum, it is better that the the prizepool is sent to the manager's account in betbolt first so once the contest ended then the manager can distibrute the reward as soon as possible without waiting too long time.
It is like escrowing the prizepool so players will be more comfortable while participating in the contest as they have nothing to worry. Just my 2 cents.
I see tipping feature at other casinos too and some gambling companies hired and gave their signature campaign managers access to tipping feature for distributing signature campaign payments to participants. It can be a special tipping cap appointed to the manager as the payment value can exceed cap of tipping value on that casino.
It's just my guess, I am unsure but it's quite sure that tipping feature can be used for distribution of either payments or contest rewards.