diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 2a45f338e..9819df81c 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000080b8f2a333249d77205abe83adc8cfc9e48b8c5ae49e398a
-00000000000000000000000000000000000000000153c47e7786eb6cc5c4b231
+0000000000000000533572b54a1f68cbb4bdfefcf3df04d7d48aae9c5e7f610c
+00000000000000000000000000000000000000000153cb1975946b757ed20e11
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index d41bb2322..5457f3e00 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000018943952b38797d3bf4cc4b27397a75c83bd1ea11dd8a6086c76644
-00000000000000000000000000000000000000000000006e7ee4433c74fbc188
+00000000045ffec4470076313a5db57f27013e19dae71f430d04abc3de540022
+00000000000000000000000000000000000000000000006e7f1587b3eb9170ce
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b99c70a75..a684e35a3 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("000000000000000080b8f2a333249d77205abe83adc8cfc9e48b8c5ae49e398a");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153c47e7786eb6cc5c4b231");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("0000000000000000533572b54a1f68cbb4bdfefcf3df04d7d48aae9c5e7f610c");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000153cb1975946b757ed20e11");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000018943952b38797d3bf4cc4b27397a75c83bd1ea11dd8a6086c76644");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7ee4433c74fbc188");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000045ffec4470076313a5db57f27013e19dae71f430d04abc3de540022");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e7f1587b3eb9170ce");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants