How dynamic reward works
Base_Reward = Aprox 520 at the moment.
New calculation is (CurrentBlockTimeStamp-LastBlockTimeStamp)*Base_Reward/120
So for Example (240-120)*520/120 = 520 Coins
If it takes longer than 120 seconds it would be
(2000-120)*520/120 = 1480 Coins
If it takes less time than 120 seconds it would be
(140-120)*520/120 = 86.66 Coins