diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index b2a02d7d8..c783405e4 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-00000000000000000bbf74c9cbc94a1b2efd539b191be565961c7867a3672101
-00000000000000000000000000000000000000000153873c309a54a154807f7b
+00000000000000004af565281bf0bad201d55a57365585f9ddb5184d0d45fc71
+0000000000000000000000000000000000000000015390d77a4602bdedd6bda2
 209
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 2721b4dc8..1a6810111 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000922af6e587f3cddd4a3d715e046563935d85a2b5b6bfcd1c25ef7
-00000000000000000000000000000000000000000000006e7d5c32f4d4fec4f8
+000000000001cdb484fe950533622c3a6bddfb0c064057b98ef7839b7b6815f9
+00000000000000000000000000000000000000000000006e7d8f7dce17a48ed6
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index f6bdcb1f9..e34b879a3 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("00000000000000000bbf74c9cbc94a1b2efd539b191be565961c7867a3672101");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153873c309a54a154807f7b");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000004af565281bf0bad201d55a57365585f9ddb5184d0d45fc71");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015390d77a4602bdedd6bda2");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 209;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000922af6e587f3cddd4a3d715e046563935d85a2b5b6bfcd1c25ef7");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7d5c32f4d4fec4f8");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000001cdb484fe950533622c3a6bddfb0c064057b98ef7839b7b6815f9");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7d8f7dce17a48ed6");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants