diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 5d354c083..136fa172b 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000086f5ea3761b231a98755c201af006528b1aab97d1a2feb67
-00000000000000000000000000000000000000000153d03f877c448f74924a6c
+0000000000000000688ad74b7f4df28bf20d9b2abe3ed2f5961510b429e3fe6d
+00000000000000000000000000000000000000000153d5d929dc87377e30b6f6
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 9e4fb33db..2f70d4d39 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-0000000005da3d23ab3558a3e5b7dac0f2e26d355fcd9093df5ca2df8b222354
-00000000000000000000000000000000000000000000006e7f452f70299a5f93
+00000000000790841e38da60079252f4d3f3ac1928fb1618117eb6f9441625da
+00000000000000000000000000000000000000000000006e7f7596fd93eccb33
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index e7811eb72..baf08a140 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("000000000000000086f5ea3761b231a98755c201af006528b1aab97d1a2feb67");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153d03f877c448f74924a6c");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000688ad74b7f4df28bf20d9b2abe3ed2f5961510b429e3fe6d");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153d5d929dc87377e30b6f6");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000005da3d23ab3558a3e5b7dac0f2e26d355fcd9093df5ca2df8b222354");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7f452f70299a5f93");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000790841e38da60079252f4d3f3ac1928fb1618117eb6f9441625da");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7f7596fd93eccb33");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants