As we introduced challenge bets, we want to give away 200 $MTC to the bettors. This challenge will be successfully achieved so bet on success to get the rewards. You can bet up to 30 $MTC to get double the amount. Once 200 $MTC bet on success is filled - challenge will be achieved and jury will validate challenge as achieved.
No need for proof as it's intended to be successful to give away 200 $MTC.