how if happen if nobody make bet during this 12 hours and there will be only 1 entry and prediction than how many percentage that person will get back as winning amount?
It is already asked and answered before and the answer is that you wont win anything, the bet will be sent back to you means that you will just lose miner fee to send your bet
If there is only one prediction, I will not charge anything. The bet will just be sent back.