diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 9af43e998..1f619b48a 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000019e282737b9fb5622237435e3f8c31946e9e3f986d50ad62
-0000000000000000000000000000000000000000016bf4a5a26650d0b1111de0
+000000000000000014f9e58d558c1520c8b7f81004d5bc415bfa99154e96756c
+0000000000000000000000000000000000000000016c0ff3e88f86bb9f709391
 211
 3
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b2d37bbbc..5c1a7d033 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("000000000000000019e282737b9fb5622237435e3f8c31946e9e3f986d50ad62");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016bf4a5a26650d0b1111de0");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000000000014f9e58d558c1520c8b7f81004d5bc415bfa99154e96756c");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016c0ff3e88f86bb9f709391");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 211;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
     const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000008afd8c37f77f1bf7316125d98a0ca261827e8db62385228ce36cc");
     const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006ead3eb16d8dfb35fe");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants