diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 87feb5a78..59dd13721 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000a35795ab6f2563eaed21844af1baa18335641dfe85f0f5b
-0000000000000000000000000000000000000000016593e07ca1e6599b80decb
+00000000000000000e3af3363b70d652ed0ac2608bf1129584087261e478b244
+00000000000000000000000000000000000000000165f4b9694a840ccee1d2f0
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 170a0f007..d478b31da 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000032dd85a022a2bf5ed3a234ffff115cb94dc80f96f9fcc68fb5187c9
-00000000000000000000000000000000000000000000006e9a07c8fa6a5c127e
+000000000001651472855bb146d4abfc101cee9aa7884e961e155ebe889bedf8
+00000000000000000000000000000000000000000000006e9a7047a798b6ec73
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index a7e38a27c..c3a6c0df0 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("00000000000000000a35795ab6f2563eaed21844af1baa18335641dfe85f0f5b");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000016593e07ca1e6599b80decb");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000e3af3363b70d652ed0ac2608bf1129584087261e478b244");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000165f4b9694a840ccee1d2f0");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000032dd85a022a2bf5ed3a234ffff115cb94dc80f96f9fcc68fb5187c9");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9a07c8fa6a5c127e");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000001651472855bb146d4abfc101cee9aa7884e961e155ebe889bedf8");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e9a7047a798b6ec73");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants