message: Fix: Start right with PoSv2 after PoW phase
diff: @@ -218,7 +218,7 @@ public:
  nBIP44ID = 0x80000001;
  nLastPOWBlock = 20;
  - nFirstPosv2Block = 21;
  + nFirstPosv2Block = 20;
  nFirstPosv3Block = 500;
  bnProofOfWorkLimit = CBigNum(~uint256(0) >> 1);
  