message: [PoS] set nTargetTimespan_V2 to 15 minutes (60 time slots)
diff: @@ -183,7 +183,8 @@ public:
  nMinerThreads = 0;
  nTargetSpacing = 1 * 60; // 1 minute
  nTargetTimespan = 40 * 60; // 40 minutes
  - nTargetTimespan_V2 = 16 * 60; // 16 minutes
  + nTimeSlotLength = 15; // 15 seconds
  + nTargetTimespan_V2 = nTimeSlotLength * 60; // 15 minutes
  nMaturity = 100;
  nStakeMinDepth = 600;
  nFutureTimeDriftPoW = 7200;
  