-    double nCorTried = sqrt(nTried) * (100.0 - nUnkBias);
-    double nCorNew = sqrt(nNew) * nUnkBias;
+    double nCorTried = sqrt(static_cast(nTried)) * (100.0 - nUnkBias);
+    double nCorNew = sqrt(static_cast(nNew)) * nUnkBias;

-    loop
+    INFINITE_LOOP


this is unusual
+unsigned int nStakeMinAge = 0;
+unsigned int nStakeMaxAge = 60 * 60 * 24 * 90; //90d

...wat. Why are the names commented out like that. Sure, it's legal C++ and all.. but why!?
int64 CTransaction::GetMinFee(unsigned int /*nBlockSize*/, bool /*fAllowFree*/,
                              enum GetMinFee_mode mode, unsigned int /*nBytes*/) const


looks safe but weird that things are moved around. This is probably from being cloned from CLOAK which modified this stuff
@@ -2006,10 +1958,6 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
     if (fCheckPOW && IsProofOfWork() && !CheckProofOfWork(GetHash(), nBits))
         return DoS(50, error("CheckBlock() : proof of work failed"));
 
-    // Check timestamp
-    if (GetBlockTime() > GetAdjustedTime() + nMaxClockDrift)
-        return error("CheckBlock() : block timestamp too far in the future");
-
     // First transaction must be coinbase, the rest must not be
     if (vtx.empty() || !vtx[0].IsCoinBase())
         return DoS(100, error("CheckBlock() : first tx is not coinbase"));
@@ -2026,14 +1974,6 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
     if (IsProofOfStake() && (vtx[0].vout.size() != 1 || !vtx[0].vout[0].IsEmpty()))
         return error("CheckBlock() : coinbase output not empty for proof-of-stake block");
 
-    // Check coinbase timestamp
-    if (GetBlockTime() > (int64)vtx[0].nTime + nMaxClockDrift)
-        return DoS(50, error("CheckBlock() : coinbase timestamp is too early"));
-
-    // Check coinstake timestamp
-    if (IsProofOfStake() && !CheckCoinStakeTimestamp(GetBlockTime(), (int64)vtx[1].nTime))
-        return DoS(50, error("CheckBlock() : coinstake timestamp violation nTimeBlock=%"PRI64d" nTimeTx=%u", GetBlockTime(), vtx[1].nTime));
-

...
-    // Check timestamp against prev
-    if (GetBlockTime() <= pindexPrev->GetMedianTimePast() || GetBlockTime() + nMaxClockDrift < pindexPrev->GetBlockTime())
-        return error("AcceptBlock() : block's timestamp is too early");
+    // Check timestamp
+    if (GetBlockTime() > GetAdjustedTime() + GetMaxClockDrift(nHeight))
+        return error("AcceptBlock() : block timestamp too far in the future");
+
+    // Check coinbase timestamp
+    if (GetBlockTime() > (int64)vtx[0].nTime + GetMaxClockDrift(nHeight))
+        return DoS(50, error("AcceptBlock() : coinbase timestamp is too early"));