Add checkpoints for improved security and faster sync

src/chainparams.cpp

@@ -54,13 +54,16 @@ static void convertSeed6(std::vector<CAddress>& vSeedsOut, const SeedSpec6* data
 // + Contains no strange transactions
 static Checkpoints::MapCheckpoints mapCheckpoints =
     boost::assign::map_list_of
-    (0, uint256("0x000007d87c5c9a214365124b0109599ca2640d6b1b3a86ebe855b310f49cebc0"));
+    (     0, uint256("000007d87c5c9a214365124b0109599ca2640d6b1b3a86ebe855b310f49cebc0"))
+    ( 20000, uint256("649f7d85aa7670cc4978f8b712f25d4063a984d0dd5ed165fc46f75d542cec4e"))
+    ( 40000, uint256("8ea815b75a8303fdd2a61202a4782313803de5c999fe74140aae45fe8e5143ea"));
+
 static const Checkpoints::CCheckpointData data = {
     &mapCheckpoints,
-    1514540176, // * UNIX timestamp of last checkpoint block
-    0,    // * total number of transactions between genesis and last checkpoint
+    1529839927, // * UNIX timestamp of last checkpoint block
+    95164,      // * total number of transactions between genesis and last checkpoint
                 //   (the tx=... number in the SetBestChain debug.log lines)
-    2000        // * estimated number of transactions per day after checkpoint
+    3425        // * estimated number of transactions per day after checkpoint
 };
 
 static Checkpoints::MapCheckpoints mapCheckpointsTestnet =