Jackpot free rolls take place on a number of different sites. If you are referring to which methods of payments are available to you should you win, then there is this:
All Jackpot/Bonus prize payments will be transferred to your Skrill or alternative e-wallet. We recommend Skrill. Any transaction fees for money transfers will be met by the recipient. Neteller fees are 2% (minimum $1). Payments will be made once JF are happy that the wins are valid. Payments may take up to 21 days.
If you are talking about CardsChat. I have only recently enrolled. However, if you are asking about the Jackpot Freerolls site, I have been enrolled there probably over 2 years. I have won their tournaments on intertops a few times, and placed often.
JPF has always credited me correctly, and I have received payouts in both skrill and Bitcoin. The site does not list a Bitcoin option for payouts, but their support staff will work with you so long as you are withdrawing a certain amount. I cannot recall what the minimum is.
Jackpot freerolls are not paid, it is a site where you get freerolls on different platforms so that you can play when they happen, some are not so freeroll since you pay a small sum but sometimes it is up to only a penny. Greetings.