diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 9550f23c5..9d7a1c31f 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000150d426dde5425fe63d208ef3ca750bad08f6b130e9611f8
-0000000000000000000000000000000000000000015d8eee48e5f456342f8b70
+00000000000000001060f8126e4317508c45834ffaa16bdb7a69dee4b6a1d572
+0000000000000000000000000000000000000000015db4a9b99be9792187779e
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 088efc3b4..8f8f16373 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000000096807722869386ff0ae0f534af2a30b66d0d0a85f6547808db87f
-00000000000000000000000000000000000000000000006e91cd91f2962a25eb
+00000000000b370976bd40f2cb7950ca306e29b311c91114a60bfb9a088bbf39
+00000000000000000000000000000000000000000000006e91f366407b377e3e
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index 35b97fcf2..3482e85e8 100644
--- a/src/networks/abc/chainparamsconstants.cpp
+++ b/src/networks/abc/chainparamsconstants.cpp
@@ -1,18 +1,18 @@
 /**
  * @generated by contrib/devtools/chainparams/generate_chainparams_constants.py
  */
 
 #include <chainparamsconstants.h>
 
 namespace ChainParamsConstants {
-    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000150d426dde5425fe63d208ef3ca750bad08f6b130e9611f8");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015d8eee48e5f456342f8b70");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000001060f8126e4317508c45834ffaa16bdb7a69dee4b6a1d572");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015db4a9b99be9792187779e");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000096807722869386ff0ae0f534af2a30b66d0d0a85f6547808db87f");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91cd91f2962a25eb");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000b370976bd40f2cb7950ca306e29b311c91114a60bfb9a088bbf39");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e91f366407b377e3e");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants