Since this week's F1 Prediction Contest is exclusively for participants of the Sportsbet.io-sponsored Formula 1 pool
(as stated in red letters in the OP), I can only assume that everyone plans to or has already sent in their payments.
https://bitcointalk.org/index.php?topic=5441078.msg61811378#msg61811378I deleted a few predictions already of people I spoke with; but I'll leave all other predictions up.