diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 136fa172b..ea80a3f6e 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-0000000000000000688ad74b7f4df28bf20d9b2abe3ed2f5961510b429e3fe6d
-00000000000000000000000000000000000000000153d5d929dc87377e30b6f6
+0000000000000000458fbb10569a053fdabb7d89435bc690e028a14d5f08914a
+00000000000000000000000000000000000000000153db86b3779c2aaf692c74
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 2f70d4d39..41db29a78 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000790841e38da60079252f4d3f3ac1928fb1618117eb6f9441625da
-00000000000000000000000000000000000000000000006e7f7596fd93eccb33
+00000000002f6e2d4d8fb5e8de1a8b354194e24bd919d6e77e49905db23a3732
+00000000000000000000000000000000000000000000006e7fa56cda139beff8
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index baf08a140..8d18caadb 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("0000000000000000688ad74b7f4df28bf20d9b2abe3ed2f5961510b429e3fe6d");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153d5d929dc87377e30b6f6");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000458fbb10569a053fdabb7d89435bc690e028a14d5f08914a");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153db86b3779c2aaf692c74");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000790841e38da60079252f4d3f3ac1928fb1618117eb6f9441625da");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7f7596fd93eccb33");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000002f6e2d4d8fb5e8de1a8b354194e24bd919d6e77e49905db23a3732");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7fa56cda139beff8");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants