diff --git a/ethcore/res/ethereum/foundation.json b/ethcore/res/ethereum/foundation.json
index 2f69339b663..2e1b2835d07 100644
--- a/ethcore/res/ethereum/foundation.json
+++ b/ethcore/res/ethereum/foundation.json
@@ -173,9 +173,9 @@
 		"gasLimit": "0x1388",
 		"stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
 	},
-	"hardcodedSync": {
-		"header": "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",
-		"totalDifficulty": "4838383800145139949936",
+	"hardcodedSync": 	{
+    "header": "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",
+		"totalDifficulty": "5282739680501645457616",
 		"CHTs": [
 			"0x0eb474b7721727204978e92e27d31cddff56471911e424a4c8271c35f9c982cc",
 			"0xe10e94515fb5ffb7ffa9bf50db4a959b3f50c2ff75e0b8bd5f5e038749e52a11",
@@ -3014,7 +3014,70 @@
 			"0x118b3ae7ad25ab96fe8a63973312c758d4ce9ecd39cc24913c26a65b4b5534de",
 			"0x19cd088af8dbe2d3e6ca7987d9ee1564ea2256f482840b1d2f0da85060de9a86",
 			"0x98bc07422cf8b0c4d1428afb759300d9a7637de2518528d34f7d237be7e863be",
-			"0x0c64526b393066911c7da3f17f9e652cfa38112ae324e3c84416e811d3fe7cad"
+			"0x0c64526b393066911c7da3f17f9e652cfa38112ae324e3c84416e811d3fe7cad",
+			"0xa30cbfaf518996ba776b426a7068faad4ee49775db45565ebd327f9c679a45b4",
+			"0xd3e1a807f5940ee1a321b20b7931bef90515132ea9959df94e55529e05802cab",
+			"0x338aef579d9ec8acc1a0411c1674bcf213d03aa7d4bbc56707e081829ce30004",
+			"0x68c7a603089a220273f019001a39bfa9194590a6fa6d8ba960ddf4888b105a6b",
+			"0xd6a9d2c354e1dd77322800d24774eb03b589dd94bcdb3cc2b70437ed70411e6a",
+			"0x39c017c42ad571564792bf5741b3ae786ff0c24ebcb5ee46882ce0545b8a2262",
+			"0xf5caea6b23f4085c9f94c880d89b1c23eb69c03dc098b426143ae4b28969a2d8",
+			"0x959eebc05ff0dfae8c7e6699f069b38b5f2e5bc8c155bc35fc7f578d2d112993",
+			"0x199e90557d4d9e13c3e7a4b5b4ef6fe52cd2c724c36eaa44b7fa151efebbbeee",
+			"0x0bfe35d253227696e76f92ff13e4c545c57fca51186a16f687e76d2e6707d34f",
+			"0xadf8b7678f98b0e5009130d9d5d77add6e460b67b0529abc5315c44dadea0cb4",
+			"0x86582f3a98b218939aefd7eea438ee278d1faaf41920e8c72922c46fd56f1c32",
+			"0x001b728a4737fdd53cde20341fa0adec9aa8ab7c7c1db244fbd509a6c4f3f364",
+			"0x9207900bfdd6c87e2ba8498c0372706799604a207930eeb331580459d17f89cb",
+			"0xd2192fcf74cad70e6f7986a0b088de8658a14638a4c03d7ae616a88ceea00ba2",
+			"0xbf6f6b91742eebe70204eb7a70196ef636fc2db4d4c4f89cd5826fbf990a945d",
+			"0x5c1210951949402fe3b012577f1af0d3e285a0b39c3fe19c84f7930e003c06de",
+			"0xa16d57f777f94f032f7f2f75b2e25ebd11559effee98b39a5a1e7cc804cfbf06",
+			"0x1b9561fb8035ec6955454d6710f053d7ad3d8e0753aaac568ac3bc98f874465e",
+			"0x1a622da786425e0b65b9083a451a419c75e16908fa04d89ddc2c11d94ffe65a0",
+			"0xbfcb9b1d847eb40b6808e45bf3d2fb8f6588d6f103167be65f246d0733afd1f7",
+			"0x2317640589ab9d52e7f5e8dda95ff3b1beceacc5832341e9053b71209bfad07f",
+			"0xa10611b829dbb533e565ad01632b26b1fd642a4393e7fdd9b8f235f11bb606c8",
+			"0xe4ea4173982f342e396356b0bb0eb47e6748461ecce0f34dbe8fc084cf6a9fbc",
+			"0xd58399c0d0ae878338d2915eaf2d65f2d1e29eb8d551d254e68bce7a8235adcb",
+			"0xc0c8b73ffc675a207f73903c49d81131e6831e4c8e071b988ed9f2a5d2277024",
+			"0xe1ca77bafa66bb055c671978b3d1bd5df32f8e269330507f071afd627012b6af",
+			"0x67a1093cbddf41264009d1dbbc33fbc25a337339be0727e70c512b585897749c",
+			"0x0fd615782db5cf4c0a3686721cbc6245696c1bc9b403a9eaffae00968d2c8ece",
+			"0xc3c2dcaee8954ca86d9b3e4e98c4bb4f6b6bc183f9eb062016c5a25b2280717b",
+			"0x70265915f5ed94d589afafa3d0d0eab6310195cc690aa82bd65e4a488b398c58",
+			"0xde3fead8ce29c04a86dcb081da2cabda5366d28de5ebfe2f8064780413f71edf",
+			"0x0ae43394fcf6ebdabdcc1ede314fe779eb61a12eab807a9d3437d9167e2247e3",
+			"0x3241127e2c7fbb3db9fe0c602b0c94e22c684b7910ffcf09c1c443e567f95e4d",
+			"0xcb94ba286eeaa1129b490bb5891e603fd35e85c97c2132c1216d1774f9017f35",
+			"0xbf396cd23c29ef21fb535880ef621457fb71981f856f2a09c494cd005d38f981",
+			"0x3df0c90ed7aba260e820ca1d28ce1778149e163524e306309aa346bbadedcf2b",
+			"0x66a2724f7481aa3ab83a8f1bae2caef8a7bc607c7ffd5bbb1cf3766741db804f",
+			"0x7a0c3492f4022322e10d81bc10a5db9aceec81d1ab70cdffd31418b79d750fd2",
+			"0x96a826cb667924ed75ec708bf07cf4c7c05f84a0132e154b71eaf6e193590e87",
+			"0xcc7030fe617c318a31984d04e3d7f2ff2196894bc429f3f64bfd69b969dc9b56",
+			"0x3fa94aae223f5aeb593246f1a93d6d694b48946c09d879e791f1188a9dedc4c0",
+			"0xd49e51fc324fe58159575c0c24171f4eb1aaf58ed8e1311c3849538c8cec3ce1",
+			"0xc474123906eae5cd48a10e0d93fcbbd653f0c6d25275f827d4fac51e696c3d91",
+			"0xacd7b790a19026fa3f3b0a354878d4fcd79dc600f7ba5cedd2eefffe1ceda76c",
+			"0x41b311a188cd7ce1444d258dc379994b81a895226276c7bfe5e6cb29a5f92142",
+			"0xda0ae01db7f73f07fce46b94c24d6e400598378a6baf01123dd710c5425fb8c9",
+			"0xe62e08175a02b575e28b9e029a838c365e3ce4278f60c2d3b5d529768a4b47c4",
+			"0x99b804c8d0feda7f9df961527d634fb8b2d477a362e1d8158856885a13425fa9",
+			"0xe73597be8ef7d78f862c7a94a8ccff17f559816eba2f830821c6f6436898f9fb",
+			"0x36de9ee4c80853c865b16904cd8f6c0e9a99ff9e7bf05100bfbc76789cedd4d1",
+			"0xf480b762872373102393461ff3a21323a1df799c315fd167780a45d7bfaae84e",
+			"0x303b66babd21e72449cad413e04bdb0bc3ebcbb84a79dd30ed7c972c5341b82b",
+			"0xbf111684fbe44a973594f31cdee2c94e807bff9cf7584c22dcd609d8234f6e62",
+			"0x79b26cc3bbf49b6f25afbff7e97e4e45f2dcb359095fdbeb7fb7addee692afc3",
+			"0x2839d620cc140ba838ecba6e7e52db8cf7b5cd4cf4857f72f3bfbc9b1cf0fbd9",
+			"0x93074136f4eec367adcf27955d38efc0dc6da514693bfc97935c7871793e35ea",
+			"0x21f5af18a4cf0096b6e6a3d4c98f4043cfee5c4ee085ce106f86b713160144b8",
+			"0x90d16b403e2deca6cd5c80e52eba0b84b2875e1dfd75fffb1a2f82bc91eb6942",
+			"0x8a5cb6854c19a865f51e3ee9eaf8e843a97b272f6467634ba40e547a435ef624",
+			"0x9afe42a0dffca8ec063c83908fd6237d6130c9dfeab57078bdd02b6ac6d0ea07",
+			"0xa05cc6108b475d3e68e280e98f514cfb6df4f004e1b7708fcfd4528d346bea6b",
+			"0x71f10879b875caefab46669e8525b9c0487bbe3247e43a6cdb1dedbfb4d4ba33"
 		]
 	},
 	"nodes": [
diff --git a/ethcore/res/ethereum/kovan.json b/ethcore/res/ethereum/kovan.json
index 929badf02a5..0d2317aac73 100644
--- a/ethcore/res/ethereum/kovan.json
+++ b/ethcore/res/ethereum/kovan.json
@@ -57,7 +57,7 @@
 	},
 	"hardcodedSync": {
 		"header": "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",
-		"totalDifficulty": "2566410291882451733317698215999610733750372193",
+		"totalDifficulty": "2654916374389120143910668097894183918476475680",
 		"CHTs": [
 			"0xdb9557458495268ddd69409fc1f66631ed5ff9bf6c479be6eabe5d83a460acac",
 			"0xd413800c22172be6e0b7a36348c90098955991f119ddad32c5b928e8db4deb02",
@@ -3813,7 +3813,134 @@
 			"0x5d71aff2a12d4f1d05c7f760d07b417a39eb0eaa72a01333befc6a2eb6b7d72a",
 			"0x8dd7de9195d2852aeb6812638ba22e73ff5ca0a8ad921c6e924cae1dd5952255",
 			"0x8f1828b4cdc6c38c112b1ffee7790953112dd2225ec82581a5095e5ae4d71cae",
-			"0xfeac88ae6c8529e87a55a259f475b7d162d01e8fa5f36c90d4665dd6105b1743"
+			"0xfeac88ae6c8529e87a55a259f475b7d162d01e8fa5f36c90d4665dd6105b1743",
+			"0x2e37011bd97c6e8a24e130fdc2c60c39b14ab3eb426a4f654bf3158a19aca88b",
+			"0xdb59b565de21902c50e2e204374ae1ce487656eb74145c103a86707b45a63eaf",
+			"0xf75c26a7214acf2d050ff5c7cc8b76e1a90540410b5c8b2bc9edbfe8fb2268e6",
+			"0x6ca7554f2abfd22951bec80f9d280abb6f060dde4a9a829ff7a0457d67a99edd",
+			"0x0324bceb8b61fa7092396764d7e1933697806c6d785446e3bbab3fc3be0ab259",
+			"0xeb4880f177e3e673f8ee04be1451a38bd8a2c0bac681d82a19327ae2d9769d32",
+			"0xec6a868cd9fba9e4f5b0d4276f44aee71056fbb7f425f717d0ce9d1fa5442ded",
+			"0xdc12b36d165eae197487ec930e35489545d2867b6fb9f8604d279337b6a8f949",
+			"0xcf1241b1c9b054df34638e99447bb0359aa01ad13c38650b872f2d727e6f68f6",
+			"0x713765e9b76c73c2de58c480600a7125972246fdcce2324993cd6bbe49cce67f",
+			"0x81e096e97dd8bf1d206d0ed41c9feaad24d344323ff74707112ee8fac218994e",
+			"0x8943c2246d5ae3e8db5fc012e9613642c6b713e5f2a89d00f09fa73246f88d5f",
+			"0x5b2d0bcbd893fab4e58d4ef698d1e8d3001799b61e758b7711f319e2b8eaa645",
+			"0xf3e4da2cf4579f52b7e4d632d93b79714487ef179a8f5d5c46af9154efad20fd",
+			"0xa2348ea2cd7a5a32779e9d292a9428fa475fae790f08e42f7699ef5eb2489188",
+			"0x62dd923966e02db7d0d27cfdd4aeac081f9827288c8b54d9f19035331a109f53",
+			"0xaa1aafa8f9d9d3e0668eff761fbfc2657d1e1906c077d93200ec000643c6c272",
+			"0xbf40cb21561989004434d6d908451d5b63045c89c2ac9b1eb617ec0054dc18be",
+			"0xdae53edbb07fe84623451da0e25da631ad3465e5bc12ef8fd8323c8a72f57130",
+			"0x685115b38f307f984c7c90e85d167d62b0ec2c924a0bca5f23b1cac12a8f72fa",
+			"0x2ad7e8f86c872504d7c2c48b0db141955d770acc84222fd725ffbd2dc4095b1d",
+			"0x9268b3b175aa6025b959b8fcdb416c39dd339e6f1fde3c427bd1bada36e4384c",
+			"0x502ee814cecc8454abb95591b0d07ed5170db94af7fda8878b9b4287fd68c9f8",
+			"0x6b19baf6b7eae36c0b1d2754645ff282fc2905802ca6394ac00bc22eb1582eb9",
+			"0xecad17ae39f897ab38850cac40480b4fafcafd6624f8fdfcaa69849f3fa101ec",
+			"0xb0804719b391b4b5f554a49f99df3a9d1c3a9884cefc268dcb27e3821aebe385",
+			"0x3018401c9a31f97881852c1bd65a964bfd3011659725c849a8de4b5ad8f26490",
+			"0x48a6b687e62a42dc44ecb56f4187e293d6f87d328b1edf409c8f2fa6568dfddc",
+			"0x8e3bc1ec926a68e22ed525485186a4d9160a54bd3e80107bb77c09911564effa",
+			"0xd7a7cce632e1746120476a3271ea09689380eb833d5538310fa0029f9174e0de",
+			"0x7bae074c51f3b547568d18e85b73fcb9b5f8040ed5f96f3523f53197150517a4",
+			"0x9ba39f376b9444dab04e0a52e4728ec842a0aa4880d9aa9819de3f0694f46e60",
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+			"0x2b9f57c8c43284ba929df8f896a966afbdd341f145b6b2b2fa98382950ad915d",
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+			"0xd3b68cf2337ca26a9c4bf6b6b286dc65bf66641d5e9c241f4c1b147994253ac5",
+			"0xefc11a5944a8061c87f274515e810fee13f4c350c625a988c27ed276b6c55b6d",
+			"0x7a93732151f7145059424aa823b24e26341cfa57f612e6de3bddbe23562ae918",
+			"0x2594b625d0f5ed52425ccda4e7898a8a554300791027af6f3a19239a15868ea8",
+			"0x1db00091145b1b0830983b5eaa5cd3d0e4ad71c09d1b2dc20c47815bc2de5917",
+			"0x60563bce11f028691cf78da7326f22a4ab01d980020e61bcf2e4bdb5912b7b1d",
+			"0xe6515bdf1f22469a4218f54791d12698d1bc555b3e54b04cf46b10effa8ce74c",
+			"0x990831a56958a6bf131697e2f35ab2a45fa228eb7435c7e65814ba28778d513f",
+			"0x1b6e4085f0e291a8ee4d7e90158dcf15702b4e6e634d1d3bb5c4bab11bf70068",
+			"0xd0d4a6061bcab0f8e645ea16b285eee7f2ff84c7765d7543aa318edbced2408d",
+			"0x2da1a609eb1b572a47f187dd5a1e9f4cb1e1885c841f91ca82137e01a9eb4288",
+			"0x1293686df427f9ee1c2116000735642b3d09511cf2889dde21e1bee427d8c273",
+			"0x8a990d66370eaab3a46d9e4fa9b7d0c621020cd3b897d9e5b3e5fea6a6979f3c",
+			"0x10030534d5a06bce47d72998ad4c042f5e445a505920723d14b1d93a3a23af82",
+			"0xf29a399e8879386e4c2bd8e873dc8aed612cfa8dfa9e5b56f9c51d4c4d1774ad",
+			"0xb252062ccbb11c3181338d9912ed0d4dabcfa4d61860c211f2f702a641fe936e",
+			"0x822c7abd11b80c862bd67d39e16a208c8462936ca86b5cd5dd20c51d35cbfbb1",
+			"0x6b62aea651f1407f94906db704a364f70d827e0efba981a8515d1f515a46b266",
+			"0xa57b7661c0471cbd7eb35becdf468622df8338a48a075b722ebc5550bbf6b9ae",
+			"0xefc593d38afead5ee1fea5d8b41a52bd2a5b5a059774d0b951bb7eadaa41a46a",
+			"0xa556e684c26e7fd6f902b82ecdf721fc292c35e0d2240c1f362c4861c366c4c6",
+			"0xc9f274efc308d1e97ba9b59c92735d1ab2a72d033ed02a543dab301610e96e33",
+			"0xd7b43559126f88c59392fc54e2b416d2a67014abce12ddf61764df989a897bd3",
+			"0xc860842132de3d8c1d0ba2cdc0a7c2853ee568789f1190738862667e3539a958",
+			"0x2f330354084635eb507cd54549ab89fecc41886d295b1d8c91efd8ca27fe4f7d",
+			"0xda6edc97997b9cea1bc90662c6a8180fa03cef6189e09c86f36adb91400abe74",
+			"0x0d2853b5a3f02ae9e4a1c5a0534a5329d2e877d4d77f60dddb36b84b4fdf7e2f",
+			"0xf048b5acc9e9191ce0ab8c390bfe03d89cbed91db5b9e7c7452b01bf56bcf5ac",
+			"0x30fb6f6093bf59794d37ddf850c315dd9491a4cf5df378b4468dca96acf78e77",
+			"0xa04eeaa9d1d767c0f93553af3a259390a9576e8b6015ffa8f0e4fdf37f41f28e",
+			"0x02411cd53ac55407e0d31520a8c3274a2f4d1fbb2541bb140f30f25843c76860",
+			"0x65bc790d632d5fe2446c65325df875ba59af3c3aa7357bbbbf47c7e5f7663a7d",
+			"0x5f364562fed351d932eff956c3ac489ea51ad2cb12a81bd8db4fe0b76e3cbb92",
+			"0x104f7070d5da1aca5c8b20a96d36638e4b5f8be4e86be83f0aed7234fcece445",
+			"0xb2fc7a73d8d859d531e51532928671ea59ae6538d4572fd5c2d76c70920aff7f",
+			"0x7ebecf446825dd0010fbf47afce8b9c3b3901c839ec46269eb8744bd799699ca",
+			"0xc64002b5a70f18b7c51ea3d3f5246fe8db16781e146d777aaa12f3b765d108e9",
+			"0x9d136068c7002d2780abfefcaedc79424d3e89b17718ec369d9e64ab7b63a81f",
+			"0x7b9819e62e92dcead89329bcb3f1a1d6bd10794d1a22d30c3d0369a264029543",
+			"0x8a8c9e66f343d09d5b7897c491c851143ca4f337ddcb5c2b1462b150e22c6f47",
+			"0x9d86faa1a5d355d6071e09c8cca50e2dd7e7dc117c2e4f6c0136a2789e84aa8b",
+			"0x234e156c10a80422ca1aafd49d614e02b698a0d89a7080f87db5dd5169b419bf",
+			"0xafbb572b8d9119ba8126fdd5a593663db3a3e6165a60f1f439902a6321a8d243",
+			"0xcbfeb8af8c93b11eaddb05df2f2a8772da694f9cc16878d3154d0857f17274ae",
+			"0x7253cf6bd2b4d158c2bd60acf5fda9dff6cbc6468ca9b549efcd824410d2e719",
+			"0x67fa14af20fe738ec5c9414401149a1f198207969768a5b982454146ef720b85",
+			"0x6c0ddef53c7d58839c3013f2accb72190b7dcc52fbe5d71f4a20f849dd72725f",
+			"0x89e77c0dd9fcb4b4d4d10c25903ff5b905f5d64b6bed9a0736e9dc2035ade3eb",
+			"0x42466344821fc29dcdb5fe7dcbda00b3779736ca90f87ca1802207f61633877b",
+			"0x6e2303e8ed41e6d39488c57dff8d50c548a7079a26c3fb86d925c0aca5b8f67b",
+			"0xb8a14969606442bd94048f2b2dc7b87662d801097537f51c8eb8f026c52f1fe9",
+			"0xd7ee25e0bfd080d89c475942575fa055ce5ae268a6f01b916b399f6ff7e94a39",
+			"0xaf5e7da13dc0ab08ba5185074657acaa2ce753a20a364f3a97d230c247bc8d1c",
+			"0x92f9106bc9ccbb4e0b4c0d1b96c5bf347d856884eca91a0bcf29e896789fd9c2",
+			"0x4bc12bfadacd6af0737646b813b1a4a9c005e97ef4b090bb74b7475b50c85dfe",
+			"0x91e4ef72d0bdef33e2e2c8acbdd7926182568f559397bfc086b96979e7c4f53b",
+			"0xb2f57e050021b238e0b47b0b46a641644645db5bbd987e8d957038655d1fa83a",
+			"0xaf221401f4cfa3db7879237b40c68300060df9f65dbf68bb02694837eaa8af7a",
+			"0x2dd280e98a0d6bc950b7f3f0bd11a9e74105d4d15463184a3f8c03d40f3193ef",
+			"0x2538560e5b802a89a021685f994acbdb3181f25d0cae17160aedfc619ca2954b",
+			"0x133cfa3f5d6a00f7392a6b0c6a97a9ba10ec50b24cfbbe6028995258cbaa065e",
+			"0xc120807872f07adeb144905ff323ea79880389a2815f8441befbfa82835555b2",
+			"0xa2c5c5a3cbf6db506dfc13285b07c24ca7e70d9e75d80fe711c3082ba119d77a",
+			"0x837622b7bbb8bb18b3d42058426ef97e3fbc2842d2b64b339733b52313557562",
+			"0x29eda2468556699747beef75f015e6772980056cf367b819d05a4822b7d54712",
+			"0xc6ec29323368dc29a1d4c3c11e945ef7fdb56db78808c4c9688ab5f9eb7f27cd",
+			"0x44b368ab63e1fe0e0da031a4e6628ed1a4fc69fa4083cc056dd9443400be3326",
+			"0xf153dbc5fc03a89e80d2808ecd45e9fe6453d112508d32ffc6305d5a577d14d8",
+			"0x32452c0d51df7a85eac3edec46bbfe376c971ac4df4512d7e050e6fa711373ca",
+			"0x70cb25f3d60126cf0104a40b2a49b44ef8a42f60b93f929594938ac00647b639",
+			"0xed63fb33d707b93e45e958d5d5f9d3f0898c3676e43eeca55c788cbb2df3170d",
+			"0x93ff103a026350b0e9c2b30c36e079145892e8e3756678e8ae4b0065fb6a04ec",
+			"0xa466cdf6063bfe155ed75c115484ce113227385eff2cdc07dd90405239842f3f",
+			"0x2883c296d9ce6b1e6e7b4f471e841437603ecbb867570cbc46d86f0f26871600",
+			"0xea5e5b84183a3a709a51c1c6f3e7b039c4663d7495b9bdcfbd4ecb0a95ea994c",
+			"0xc0e97318bd3ee2957c09d6acedac77ce6b219608e5dd63ef512aa08d63c3a114",
+			"0xd3ccc7fcd24076afdf6249f671de402b515a131913df2da17118be47b3720b33",
+			"0x4f5be5a6edd66ec496207b33cefd00722f3167b9e6f2a44d9613c4c7d6541aba",
+			"0xfecdd1844517d0523a7b45d7b51769728902b881b7fc308f486e850c870eef5b",
+			"0x01a22dea1d0e25885e0a03e56489bcaf6747e712ceb5a42c74430fa6ffcc1c21",
+			"0x06cc521a05ce856dc55041b90dc4bbafffee578c1c315b5cfa4cc2d1ccba891f",
+			"0xac21d4b08fbf2891e0b3645b870695434fe703101f74e7fcf0d0e1304ce65b54",
+			"0xd62584c47aa1d8554cc08cf675bed128e541df54900fbfae958877595ad168ff",
+			"0xd8f1806ddaee8e729218fea1911efc5e663666ffb3acad4a2fda3757700d6d88",
+			"0x9dab2acfe01506a185276145deeecdb5c8fe0937feacffd40fb25a83e8eecc72",
+			"0xf0b74c6b1a441fc2ee8b2f25d2f03307164014d42a0784683a9d6cb7d2179064",
+			"0x7d590f0bcc891e30996adf8583803a9dd1271442c3f0e69502addbd371437767",
+			"0x3a66601fff95b0aa0d0660c12788ad56d2383cae290ceb2fb9ff41794abbc55a",
+			"0x36e94b03402f18c689f5234973ce1e626a82aac085dbdd682b51cce21f8c1872",
+			"0x00abd1d34c7e55f58681866558cb844c11faa55e8cac70ede75811f55341cfde",
+			"0x9983fc20e63e77ec0680522035b03167403681674ec62293cd6b7fe360c69157",
+			"0xe98b658fb8b6b7fba7463562f86348bf1e3534bc9148e8559423b3ee5ab68472"
 		]
 	},
 	"accounts": {
diff --git a/ethcore/res/ethereum/ropsten.json b/ethcore/res/ethereum/ropsten.json
index 0434ef9c339..87c82621ce8 100644
--- a/ethcore/res/ethereum/ropsten.json
+++ b/ethcore/res/ethereum/ropsten.json
@@ -52,9 +52,9 @@
 		"extraData": "0x3535353535353535353535353535353535353535353535353535353535353535",
 		"gasLimit": "0x1000000"
 	},
-	"hardcodedSync": {
-		"header": "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",
-		"totalDifficulty": "8635599198809021",
+	"hardcodedSync":{
+		"header": "f90213a0f6a1b2e8155af1d1d77879826e2535cb6023ba35705934380ab05f65bcbfb107a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d4934794f3af96f89b3d7cdcbe0c083690a28185feb0b3cea015ca95dffe4c5de6d9c02d9282df0db94855b0d602738f4b6fcb2268694cd92aa07ecb0900077c45bd4d3ca910218099f726fea18461f90be18897710767a51559a0251f2cb798e965c5d9b11c882f37c69fd2c42b314fabe64d2b4998c76eb93ae8b90100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008439b475f9833720018389769d82f618845b45928b96d583010b038650617269747986312e32362e31826c69a0fbd0db05012df54423a6b25395ec4f6e66d9f11af8b9c492c4fb7197fcd6a5ba8877d4a227c2bdf4de",
+		"totalDifficulty": "8809217991079619",
 		"CHTs": [
 			"0x614648fc0a459451850bdfe353a932b5ff824e1b568478394f78b3ed5427e37a",
 			"0x1eae561c582dbb7f4e041998e084e165d0332c915d3a6da367638a8d24f3fafc",
@@ -1747,7 +1747,79 @@
 			"0x8baa0703e1a050c40f85dc850fe477881f432c951b1cc1b2b71ffb68ab7fe0d7",
 			"0x14ca94dfd343548e32ef5659c043d6e28f0e577fd38da1ee12f11c08e281d775",
 			"0xef25357970c76a8b72a6e52f49bc30651f711c7df70444d4667e80febc0e3b2a",
-			"0x41b8b4ebd5919dad3bc609ded524b97403d88f019367f0f4f622561131644ffb"
+			"0x41b8b4ebd5919dad3bc609ded524b97403d88f019367f0f4f622561131644ffb",
+			"0xb29a8ad1157621d0120aedbd8dfeb4b318979bd43a5b018bf7b9ce33d85da312",
+			"0x9ddf78b5d67ef40454867ed33de83a01cbd8c18fe09da3d9f991a196811dfccd",
+			"0x3604121f9cfbb5cf552cf8bfc9a7958332eb97131158e4f40f4eda481e553991",
+			"0xf1778830f694720a6f990f9d476b0f365e8a74880253b55ee16f5cbd6c8082a4",
+			"0x89831626d154fbe84a4c62c3e2638cd00e42b3844c7c7b98cfad113abdbc5347",
+			"0x650573f5ef274b2aeb40642e25fbd661cb0eff66245d7cc8f6fb9e9daa80fc12",
+			"0x479f6c652173efe94abaa850bffe1557847b26f286467013a4d72973e05e8e54",
+			"0x7096619d5716c34592ac2d9907ac28a74c6f6b1ebb1962a0217df82bf3e714d4",
+			"0xb7c7edbd8ae7eed58e973dc0750adfd04042ed56baabf372b111fce3e4b4469a",
+			"0x25529b597bd15317e55767b3fbfecad0657aaeda99f098186b41b70811f7af2a",
+			"0xd790747b09f925fd155b7bbdb5ccd89d873277163e4fe7054bbf71c0b26b8072",
+			"0x3aa0b221d1c4743a06692f645f38a8128d55f1c07cfa6e9711b0d2e0f2e0e738",
+			"0x26fb5017218cbe4250d2ceae751e99b9a34d7befa162dc248ac008c5d1221e71",
+			"0x0e4ada59854027601f8f81fbdceb95228db667eb65fed97cefbb35dba21d3b52",
+			"0xd3be75ae2da3e271dd85cd8226d789aa12d108a4b0d2681462f6539637572e50",
+			"0x6f041891c8219b508138f67c95a1765d08c5ec06b9ce585f52f837806fce0609",
+			"0x9e106515d0e80b41397b2e8e98adbb7333e76265917339a62063a07d9a7ed311",
+			"0x25f47483ecc5ec32f94b3dbcb4d42a4cdbf5c279e93567e14afc742a4619d3e0",
+			"0x5d81afc54f6b68bd820dcc629ff7e9d8397da56ffedef9addab0eec620de0757",
+			"0x36e192130485f248925d4b0d2fd98745a76099eb13f53093621d216d0aff0d6c",
+			"0xb906e5e33b63f6cc355c13b8461a260ee25376ee96909fad2c6ac121ad831496",
+			"0xd68e7e0d136e30f67ccb7c21e4dc43b0ad5536584e4b77c9da8d903a04e9d212",
+			"0x5aa7847a4bddda7fbffa62325da920a21a11524ac1b691bc3b55e4d1790f24bc",
+			"0x331f95f062ed1d38dd02b5ab6a95dd238ef97c5ee9777c938697340c902b4b5d",
+			"0x8c6a580c8b07567f747bf20946023c3b581c51075cce5cd5d47b0d81d8922135",
+			"0x8b89483810a49626f90846a0b49ad3e2172657dfa3003d58fa2a43d12c8f4090",
+			"0x944f9a5754800a33d903c8a464d602fc9da6af8ff3990c3eb669ac9cd17891f9",
+			"0xc75c82a2c1ecd875d16f343a58835d756740902c246d3b1deae97e49aa19f98b",
+			"0x1d2e0f2f87ff2b08514b18855c343966d42e0f1a048ddd3d316dca6e06292db9",
+			"0xa6508507463e53b3a840dd55ed9be57c8a56e1533c9001276750bdf19796f8ea",
+			"0x01eb6b636b1852e8f9066c12d4e6b7b06b90a325be4d97e08f7f560bab4796a1",
+			"0x8a0d77fb41f50808ff0a46dc9f3831a2b5093f55ec2e94a3d2e92373ff3b5695",
+			"0xea3383ba1d30891d1e236db2b31373541f51a9e5c4b4d017cc4960480dd20311",
+			"0x01129e8d7eff516a225cc0db090e4e38362d9eb2d0571ce00f4417836de2e375",
+			"0x92feaefb7f9466814a0220e536fe5ee73560507d071e059827d406329e609f87",
+			"0xac149150c11b3bdc660320a0e955f154fa3137549a73951207659e2b903c145b",
+			"0xcb68cdb224f9b3b0b0f3ca0056e70817146c9ebc75876dd952e6ca8ea896f2ac",
+			"0x157565282a12d790452e343c9762c2124456039729f3a8f97a2cee60d85628fa",
+			"0x42eadc181d59d8d8b26b37e0e9c9052e45bde72090d330bf9cf21d9d3c7d9048",
+			"0x1ea0ec8879b200e259a3a2a0f2a7aa292301784fa422f7c32ed5d945183948b2",
+			"0x06aeb2956be9d74ae4ff0b8a6c1874ed8ba46a186616356dc060bea1cbe5c628",
+			"0x814b0382b52a155a4e35639aeb3d8c859afc4fe5d151de3b0f1bac646e40f2eb",
+			"0xb30bf3e85be41a2a9e53321ee9f03c7078516c72c7e2d8e7e3134de709b61c36",
+			"0x1f97f5d334b5e6ebc72f5b846f24c7911f4fd1653f89b3477ce4b8108342810f",
+			"0x84c6fd181c28ad159ff18d203d14f966668468c9ef0a5d6dbd863886a7e0af1e",
+			"0x4b2e6947d55ea504bf205bae9dfc0e5402efd33757eea4da00a8ed2a6a3838ae",
+			"0x85f31d45128bb91cd3490b58a0a641ef77246ea9c83de30fa89b621307fd96f3",
+			"0xd362f5e6f8cbb216e66eaf49e4df25e01504ac729da86c530871a34e11d302f6",
+			"0xb7860983b043bc13ce5a27135eea12ffaeff71879404b18af3079b98da156bf2",
+			"0xf2ff82a679b2b90cb9f4a3bb903eb7ab36ee1c47cbe40024d8d570f5e16bbf4e",
+			"0x7e34a7e6673146b6bb7f78593b6093ef15b8e9fd1271b33dc5f7d17876b31871",
+			"0x725c97f83b4cf213296ef353e1c8d64854ef08983fd61320088b8d9e2ab33849",
+			"0x18085800d10fc7845148835d0ef0ac980a82eeafc44e12bfa296f9c38fc6e19d",
+			"0xc6c3cf95310cfd0254f0f8e93a3c25bad2b17df04f9c51a25927b80d02e06b69",
+			"0x822213c1b03cf68ecadc0b7572d37266207d5fe4efd5e56a924b0a1aab8a8e84",
+			"0x1ff46ffd2dd880cca76244f6af1fd8bddbb4b9ec58f86639821a16f2ff08f3a8",
+			"0xe9d00df19d716dc859922f2e6c907263191c8e531498ea557869ea1115317c95",
+			"0x6d3f1edebd562e9d1a236ed7a1d9104fd8f5a086cd78d35c7a65f27c269d98ca",
+			"0xfea701ced5bca0d5043512700598d3eafa0b89dc02f3c157cd1d52bcf4d84d9b",
+			"0x556c1cd8ff3ebc2ccd4eee9f1ad3837e346ecda961da17c0ee9cd4d084a47653",
+			"0x5606be2fba065424af76c94d4156ea82f77d9872ddac7a4c2517957a169e58f9",
+			"0x8d0223425b48487db1b371c966c7688435f4b9fcda75b088f0aac203d6657cb1",
+			"0xfceb55d8f3048a3f2255562e0a9ee342439253abcd048fac151ef4b910048e22",
+			"0x360f76e4f2ef49632e3bf8cfc3afeccff6917e98a48d3568148c3bb13f9d2d7e",
+			"0xd87bbf8397204cc2af883362646b0ae95392303935ec1997ab052c194e0ef117",
+			"0x9f1dad9dfecaaf117ab5277caf672b70540578e703c2024d3f23bb7cf8d6410b",
+			"0x5e130ccb23b7b66dd2fbdd912d6006d2820071dafe2890f593f952028aaa19c0",
+			"0xccd2f182107992fb9b002b87cdf7990cb2810b202b2ae5d6ef5e0b3bd69632e2",
+			"0x4b40cd83205f8b946ca9f11fc3306872650e658e631511fd4080bc8ca749d913",
+			"0x652acc59b71ca20bb65ca195d1a4b3e177f6a3985bdcd6120e1a45b7d4a0c7ca",
+			"0x49a5e2580ceb329665244e489592aea27d54da8189a665d9435e037ea70c46a5",
+			"0x379801356beb3a8e5fa7311792c69c7ac1f675a9c08c837f9f0e9f53c243d6a7"
 		]
 	},
 	"nodes": [