Add checkpoint at block height 15000

src/chainparams.cpp

@@ -127,11 +127,13 @@ public:
         checkpointData = (Checkpoints::CCheckpointData) {
             boost::assign::map_list_of
             (0, consensus.hashGenesisBlock)
-            (2500, uint256S("0x00000006dc968f600be11a86cbfbf7feb61c7577f45caced2e82b6d261d19744")),
-            1477973071, // * UNIX timestamp of last checkpoint block
-            22063, // * total number of transactions between genesis and last checkpoint
-                   //   (the tx=... number in the SetBestChain debug.log lines)
-            5083   // * estimated number of transactions per day after checkpoint
+            (2500, uint256S("0x00000006dc968f600be11a86cbfbf7feb61c7577f45caced2e82b6d261d19744"))
+            (15000, uint256S("0x00000000b6bc56656812a5b8dcad69d6ad4446dec23b5ec456c18641fb5381ba")),
+            1479851027,     // * UNIX timestamp of last checkpoint block
+            110415,         // * total number of transactions between genesis and last checkpoint
+                            //   (the tx=... number in the SetBestChain debug.log lines)
+            4240            // * estimated number of transactions per day after checkpoint
+                            //   total number of tx / (checkpoint block height / (24 * 24))
         };
 
         // Founders reward script expects a vector of 2-of-3 multisig addresses