diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index e3f75b3..4ab61ca 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -25,6 +25,8 @@ namespace Checkpoints
     static MapCheckpoints mapCheckpoints =
         boost::assign::map_list_of
         ( 0, hashGenesisBlock )
+        ( 1, uint256("0x00000179bb84389b12f54ab6af07cb4aa3dc66f716930b2b041e99f6f89d9f43") )
+        ( 500, uint256("0x0000000065527f5a4cd868c1f70a28da97d50765ca23007540c85c38b96e5100") )
     ;
 
     // TestNet has no checkpoints
diff --git a/src/kernel.cpp b/src/kernel.cpp
index 062673e..0848156 100644
--- a/src/kernel.cpp
+++ b/src/kernel.cpp
@@ -15,6 +15,8 @@ typedef std::map<int, unsigned int> MapModifierCheckpoints;
 static std::map<int, unsigned int> mapStakeModifierCheckpoints =
     boost::assign::map_list_of
 	( 0, 0x0e00670b )
+	( 1, 0xbc4b99b6 )
+	( 500, 0xcd5271c0 )
     ;
 
 // Hard checkpoints of stake modifiers to ensure they are deterministic (testNet)
diff --git a/src/main.h b/src/main.h
index 63ae575..b848d60 100644
--- a/src/main.h
+++ b/src/main.h
@@ -29,7 +29,7 @@ class CInv;
 class CRequestTracker;
 class CNode;
 
-static const int LAST_POW_BLOCK = 20000;
+static const int LAST_POW_BLOCK = 2000;
 static const int MAX_TIME_SINCE_BEST_BLOCK = 10; // how many seconds to wait before sending next PushGetBlocks()
 
 static const unsigned int MAX_BLOCK_SIZE = 20000000;