diff --git a/contrib/devtools/chainparams/chainparams_main.txt b/contrib/devtools/chainparams/chainparams_main.txt
--- a/contrib/devtools/chainparams/chainparams_main.txt
+++ b/contrib/devtools/chainparams/chainparams_main.txt
@@ -1,2 +1,2 @@
-000000000000000001795c37f42938a99b3a58d37756b869800d8aa91c8d4e6c
-00000000000000000000000000000000000000000111f02f83e6bcf91990ed7f
+000000000000000000dbb8249d44cbec9a87fd10b529a35cab872e619feec6c0
+000000000000000000000000000000000000000001150bd6828385d235548b0e
diff --git a/contrib/devtools/chainparams/chainparams_test.txt b/contrib/devtools/chainparams/chainparams_test.txt
--- a/contrib/devtools/chainparams/chainparams_test.txt
+++ b/contrib/devtools/chainparams/chainparams_test.txt
@@ -1,2 +1,2 @@
-00000000000020cfcfea34eee74973127aecfad08f20aaadbaed406adefb40cf
-0000000000000000000000000000000000000000000000531d34535bcae76ab4
+00000000311462d3ada6ab1c09b881303e4f6f4e0c881b9ad7516078f0b009fd
+00000000000000000000000000000000000000000000005333004f450701eee2
diff --git a/src/chainparamsconstants.h b/src/chainparamsconstants.h
--- a/src/chainparamsconstants.h
+++ b/src/chainparamsconstants.h
@@ -9,11 +9,11 @@
 #include <uint256.h>
 
 namespace ChainParamsConstants {
-    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000001795c37f42938a99b3a58d37756b869800d8aa91c8d4e6c");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000111f02f83e6bcf91990ed7f");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000000dbb8249d44cbec9a87fd10b529a35cab872e619feec6c0");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("000000000000000000000000000000000000000001150bd6828385d235548b0e");
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000020cfcfea34eee74973127aecfad08f20aaadbaed406adefb40cf");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000000000531d34535bcae76ab4");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000311462d3ada6ab1c09b881303e4f6f4e0c881b9ad7516078f0b009fd");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000005333004f450701eee2");
 } // namespace ChainParamsConstants
 
 #endif // BITCOIN_CHAINPARAMSCONSTANTS_H