diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 0e7e39b15..1b19ff65d 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -71,110 +71,23 @@ static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits
 static Checkpoints::MapCheckpoints mapCheckpoints =
     boost::assign::map_list_of
     (0, uint256S("00000551e93eb0749d40dfafd54b092e78d6612b47bd40de8d099818f65f53c1"))
-    (17431, uint256S("756fc5a48231f0a7422de24f5801e0c4ca8a14b428789b9e196c35fa7864eef5"))
-    (34863, uint256S("e41a7cd96e0a0bf01781243fc0ee7297d18891deacd0c4442ef39c7a3fe80332"))
-    (52295, uint256S("498140ca2fdce8a437e604019492469cf09e875ed11afbbfbe58b6d2dec5f3bc"))
-    (69727, uint256S("3b263bc8a912f5ee84eb0875aab5b982bf8c9c221d05e808a47ea2b25dc0b2b6"))
-    (87159, uint256S("bb0447caa8ef1f279b15a7bd8538095161563d073dfed79977de9bee0aa8947d"))
-    (104591, uint256S("2d25725c9be9e0dfdb003ceabda41b017e427a732260ed203fb7a83b2a798860"))
-    (122023, uint256S("5200c64ca58efdabfa15bc97b496347b0cbb1aa65924dd29c2823ac1668736ac"))
-    (139455, uint256S("5cd4a4025cae96dd4dd852a95b2ca132ff765204b762dacf01824ad7205b5c41"))
-    (156887, uint256S("ed0e2ec69bcf4b6387601e48a68ccf987a71bd745081013d1f2a257e11fcce0d"))
-    (174319, uint256S("1b61207ab3b14960cbe33b7148b65a8e88b62b44392fc7f2192a55322e3f43aa"))
-    (191751, uint256S("a0df3dd4450523bfb96133bb18d3dcf751cfcc315fe7eb3ec9ba6fddfffaae9d"))
-    (209183, uint256S("a646267e876ce897593af5353ac8e3fbb72435ae0a16a39199fc9487e18f30fc"))
-    (226615, uint256S("cc1056afa29a97510b4f695067a31a7af6f0cd5e2b33ac1cb38abf69575af79a"))
-    (244047, uint256S("6cbc0b06cac64a8e853c12286012437ac1a8aa5c126f3b23ca7a07943d76c3e0"))
-    (261479, uint256S("ed9ca144a4376812cf135fe4e258e78019bb5269f35fe1615d883e9861b02f68"))
-    (278911, uint256S("512b3e0ca8cee19b9b19c464895defb00d774e72827ef84c8bcf08a5b152a09d"))
-    (296343, uint256S("e22e78a53ad2821f9c5f1e5a96144a9eb34941b12cf1eaefb1ce3389a765036f"))
-    (313775, uint256S("fe356746a37acdb63ba46bb4848b8830f172b300a91bb7fa25786a00dafc22fd"))
-    (331207, uint256S("da8a0d76d5d1c7d1584964e2bde0273b52ba253803cf633a88e73268a5058c9e"))
-    (348639, uint256S("97781bbf4e323570269a170f7ae599a93f0fb6cab19cf62874df94f97145a5f5"))
-    (366071, uint256S("338114582c6af513f1d25618ff5ec4e9324b178cebe86f0cf250288855cc62e3"))
-    (383503, uint256S("169e9f134643c5cbe1df1a0a0e2c2981558c7ac39444927317eb37e999353a56"))
-    (400935, uint256S("5fe19a9634efbce37049804bb90dae8b1e95ccb084593419c5d67175873610f4"))
-    (418367, uint256S("daa8ac9ad02f47e4f2e2a5a278f67a528c10773ffb6c09fab0f3005305db9f15"))
-    (435799, uint256S("62f3cf203ab93313503ed8aae11176168df2d63e8716afb0f9f6b3e8af2f11d5"))
-    (453231, uint256S("5031139828d7aaec0fc0c27dd63b0d0e98d40e592e16546f4e9b77b1ca73ee71"))
-    (470663, uint256S("d5bc2a291b6c6564dbe80e67e2e150ffd2fe94657b99358f29d311d940001ac1"))
-    (488095, uint256S("eb9af35f8a4247cf2afd5dd30aeb941e245ad686543b7cc5a2a5422619653e50"))
-    (505527, uint256S("5fe30ace97370b5bf896d9f8dde9aee86c53db6420d2cc7229fded87c77875a0"))
-    (522959, uint256S("4e55ebd7b189f116d5431d6e554049d9d43a0d7ffc78cef72ff8fbf546965db2"))
-    (540391, uint256S("2a94be0b1b6c4f208fd05e001cb30cbfb5cf07213c1a90fce664b08c5e3b8f89"))
-    (557823, uint256S("daa3a0a887b8d54e51836398a5cf4d37ecbe0eea2a9d24468e1477ca7afa8348"))
-    (575255, uint256S("0d95e0183469bd2e9a6297975a2e5bcb91f568d165b02abdda9f4654cbffdce8"))
-    (592687, uint256S("9a5ef0a5efd31b4c02dabef51696d55815bfafa604d435b80880e8e814a6358e"))
-    (610119, uint256S("0394ec5a00450fd003f8c4f88ed1088e97ee5dff6ddbfbc16f01e510f582cdec"))
-    (627551, uint256S("ae1850fae1587085f11e0fef7957255daf22456e9df57a0edcb34d407cb7d9ab"))
-    (644983, uint256S("a4d989c067b929ac56b065a16a37cbb9d78d6447626696544c278b8602da435c"))
-    (662415, uint256S("3338f0e7bc6f7326d2360be21ccf5944bead898162f63ed6a2fd281be06dc5fa"))
-    (679847, uint256S("594a62eb358d0061b1b29174ec456f87eb7fe17001b2cdd2f725c565d7356c16"))
-    (697279, uint256S("c11c23a1fae5582ba0e8fc780b773d7c4924d93ffff110ac6262d1b6ca243f92"))
-    (714711, uint256S("07fde01496985fd13ebd9c809d576ba179c8828222b1d373acc06b72613b9957"))
-    (732143, uint256S("195e8fdc5a8b7f7c8ca66c75d2db32ffec6f575701c22d663b687a123f24e755"))
-    (749575, uint256S("e8217fac9a8df59f7748a891c5ec99261ddc6c48ae21c4f0965cc99dac826cd3"))
-    (767007, uint256S("f3312329aab732b1d29fcb5885bb7bc07d5bf557b7ed6a16b723a44c665e9696"))
-    (784439, uint256S("45d1be68043f13a59e8e65a5d8754402da2f9429466f211ae604a802268f7f42"))
-    (801871, uint256S("ae1df919fae83fe5ea0c905af02d07c902e1c7daf565f944b54087b9f963d1a5"))
-    (819303, uint256S("f4f16af660313ae3fc9d3a92a950a05b87d597c19d5d646804391bd7429730ba"))
-    (836735, uint256S("dd8e1163e606183b8face59b7c699b263b1b357a54ac28e569b86e9a60ac954d"))
-    (854167, uint256S("2f15f5d3ce263d88b770578bccd328eb6e7218451892b17eae0256c027317058"))
-    (871599, uint256S("b68a15d84f758cb06dff5ad29e2e0827a101da68d51608a0137dd4aa6027b31d"))
-    (889031, uint256S("5c0fa7e456238bbfe3ff47a48386baca9e3e1db19e52a440681ba1a38acfa546"))
-    (906463, uint256S("3f138e3659ee678bc4c14609d5a72ebdf55621bca140448e7a73aff8b83d4d5b"))
-    (923895, uint256S("172c5d90359a8ec818536b10efda507585485fe9399c9f88166ae2f803b1f037"))
-    (941327, uint256S("21df23010e639ad1b43183632d381bf684fa5c131ec640093734ba4cd1aa9df5"))
-    (958759, uint256S("08e584a345fe725f706066cd37a5ac494b0c5625521bdd596ef8466ce9e139f7"))
-    (976191, uint256S("4553f387efda60fc49ddc47e50f9adae81b81c5e0030d7a62509eab9392403e2"))
-    (993623, uint256S("80a2a1488ba2a874c078b351b106af3d343df9ec892dce56f145693d33851c1c"))
-    (1011055, uint256S("71ab49555acab62274a650134666fbe26915c220a5213f50bd8c5a3a9ee2880a"))
-    (1028487, uint256S("0e16dfcbc765112791ba1e3f580db284c2c627b66b1af06323ccda7ce0c1aeca"))
-    (1045919, uint256S("9575b2a1be653b87a8c2fa26a675adb4c7123cf4b0e63ca760db6dcb964f5792"))
-    (1063351, uint256S("4e3bd4d210997f145c6273e75a284633791f2c66352a78c26d4afab1b5057197"))
-    (1080783, uint256S("37127bbe788576243a629a4135f0bb46cfea90101a0b7f4debdae5fc44f8de9f"))
-    (1098215, uint256S("6dbbe155eb2a8bc5df5f961befaa98930a916023f038d5f672f07bd56ff48490"))
-    (1115647, uint256S("266b1470d2d966e7e24bbfefb7698d4106839b41635c3c7aa979ad337065f38b"))
-    (1133079, uint256S("b3533ebeb2176cb90ac20bc835b99b1830c0a5b003eeeeaf0f402c95229372a9"))
-    (1150511, uint256S("9d638915dfbf0a29a828e85bb041494ede9a918c1193cc8f8348cf4811c833ac"))
-    (1167943, uint256S("95161cc020a15fc1b70eb631ae733c4d225ddcdfad85ceb505dac3ace3b6ebdc"))
-    (1185375, uint256S("d1f4603f8ce29f14800b12fa96f86c5849ba0138f87c0d56a1a912cdb2161725"))
-    (1202807, uint256S("ae8136602f082fab203873b9f3a03a1dd3accc335ec51e033b8b8d08f7e19183"))
-    (1220329, uint256S("6496d3bf8732be53932b18e9d9ec0d4ab6d32b340b6f2b9a45f871a2b2c2ffbf"))
-    (1238010, uint256S("ac8062dcb632d697e098adcae4c389692b1ff9485daff1d0440812ab5a196fb2"))
-    (1255596, uint256S("5902e3b09a831112d3de2fb63a2f098309caca0fb4b3770d3dcdf5ae0b0a5d05"))
-    (1273262, uint256S("35ae6df0451fda29a77905d68fdbc81601ee5bc144bce0c79740d75861ca9347"))
-    (1290999, uint256S("5f05eea97876e36bd561b95124502a159dc301040735dd7a658ecf1431d96db3"))
-    (1308767, uint256S("5bfce49294053d4c1b8c5c1352cc7a25e925a880bd9c0ab259fa955b1b8f46ca"))
-    (1326430, uint256S("66a1bb8752c31822bcb24fe6d14277ad58c4eb7eac514cf544bec27dfabe5e8c"))
-    (1344290, uint256S("ae5b48605b3e3d85887c0de3e224c624d53e590b0942eb58f13d405d83222e34"))
-    (1362088, uint256S("7b1fc39808be08824230ec044b0c1a45c0c09c03c48fe2273898207b4c9b05d7"))
-    (1379749, uint256S("1da1779af8e2dfbfa2c2238b301cd9410d5b3ca1a9daf0dbe61b35c1cde0c815"))
-    (1397474, uint256S("4c35578cbb7992e47886ea8b70cf279614fc5c278faccec623f55eb8fc7d4fe5"))
-    (1415134, uint256S("3dfea97bace449be7b8428b02be382441c5f5c8099679ef390afe4090426bfca"))
-    (1432804, uint256S("ab07a549799c17d0ca7af2ee72ba90b2f5b29ecd4ca4fd9de6f47bc5f85067be"))
-    (1450531, uint256S("05674e36c4b5b8c550d12c96903350e5438b30bd809f57be1cce25405befced3"))
-    (1468213, uint256S("89720c153a7340307fb3d89e65440a7c0c0a5dea019df9a17ab81a8f64aa4761"))
-    (1485875, uint256S("45509c96f4bd58050bbc6f3a085ba4387fe5339c7cc63f1eee0069691b9ffc4a"))
-    (1503603, uint256S("812d659d80a959d13c627942dc2100fa36db216c611abdfadd2379952981d31c"))
-    (1523160, uint256S("880432f6423dff57e6d2601cfc0fd8dbf755933912991b1577b621330f1a597e"))
-    (1543801, uint256S("54dd193918b2054e3d4898e9cee1678cff406096a02c67fa5089faa21bf7664c"))
-    (1562794, uint256S("442489e61f88789e035daf652382937ddf7256a1ebb4c2fe6ebaecbdfa062df6"))
-    (1581648, uint256S("4f743f3685d416d01762006383929f700b511bde331bcdec86cef1d616780eca"))
-    (1600190, uint256S("94b5fc227c5a826967cc9fb2f14f8cda8c2ade60488e95b5fa96ea6277cde1e3"))
-    (1618979, uint256S("e2c97d0a21599d46e167165dcd3c619a74c5c48479e0e5b2991c12bcefb96e1c"))
-    (1637876, uint256S("6141d62052d23a1668f77c2386b7483244e25e9493e7d60983db44527016b5d8"))
-    (1657688, uint256S("1c318090bbf5d777ec1525bcc03de940fc594cb066ba5954cd4daa2b745f80bb"))
-    (1677186, uint256S("b5e2a4d63eecd596dd8efa74c56f8c7f4f2e5c1a89f1ae2ed58cc4b9944108d5"))
-    (1696465, uint256S("0a5d75cd9193e0d4e61e9acf23b4649926b5b33e1c7275c234be53e0b60e810f"))
+    (169669, uint256S("ece5ec203160de0b91842e319cc4dd5660e5adbbe4d0541fabb96bdc8289fb6b"))
+    (339339, uint256S("e5d68479a10a9d1ede4638fac6523dcd58dec879fc2a2d73ecb86c344c65cc2a"))
+    (509009, uint256S("c2c6a3b0ed9fd4091f4e8fb67ccdcfba7fdf92a1f8c1c691f810154462806927"))
+    (678679, uint256S("de3eecfc95d12b4fc231ae483a603c6e28ee42f6dc9bf807a9f515fe09dcd325"))
+    (848349, uint256S("f2d3f40231fcd46b86f1acf1b79e3b9d47563ef36ad504be7d50b52b10ca241b"))
+    (1018019, uint256S("6faa8c962109566ec2bd4cd3bf322a61e6460849b340f59f16038dcecdb5ca1a"))
+    (1187689, uint256S("ea6301128708ef77e2779a772bbcef9db8c7c14a7bac12b2c19e600e7c081281"))
+    (1357359, uint256S("43595fed114bb51abe801fcb31989f10839677cbcfc6b100719f3e1bd85d49fb"))
+    (1527029, uint256S("250ab167903b750aa338fd03576feda90e2974fd35e5ef3851db7f02e914fb75"))
  ;
 
 static const Checkpoints::CCheckpointData data = {
     &mapCheckpoints,
-    1731999990, // * UNIX timestamp of last checkpoint block
-    3583075,    // * total number of transactions between genesis and last checkpoint
+    1721598600, // * UNIX timestamp of last checkpoint block
+    3240675,    // * total number of transactions between genesis and last checkpoint
                 //   (the tx=... number in the UpdateTip debug.log lines)
-    2814        // * estimated number of transactions per day after checkpoint. 2000 for 10 minutes of bitcoin blockchain (1M block size). With 2M of block size and 1 minute of block time, this field should be around 4000 * 10 * 6 * 24 = 5760000
+    2826        // * estimated number of transactions per day after checkpoint. 2000 for 10 minutes of bitcoin blockchain (1M block size). With 2M of block size and 1 minute of block time, this field should be around 4000 * 10 * 6 * 24 = 5760000
 };
 
 static Checkpoints::MapCheckpoints mapCheckpointsTestnet =