diff --git a/contrib/devtools/chainparams/abc/chainparams_main.txt b/contrib/devtools/chainparams/abc/chainparams_main.txt
index 0563a1372..571fea28c 100644
--- a/contrib/devtools/chainparams/abc/chainparams_main.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_main.txt
@@ -1,4 +1,4 @@
-000000000000000014cba9590c49c23f7c349963ec916c4856041c8e3896f60c
-0000000000000000000000000000000000000000015b136859b1203ab843da32
+00000000000000000f8cf756598e369407839cd6f0872cddb2e637939be29486
+0000000000000000000000000000000000000000015b3f8c642872d3cf173fc1
 210
 3
diff --git a/contrib/devtools/chainparams/abc/chainparams_test.txt b/contrib/devtools/chainparams/abc/chainparams_test.txt
index 7313d9797..b3c9f5261 100644
--- a/contrib/devtools/chainparams/abc/chainparams_test.txt
+++ b/contrib/devtools/chainparams/abc/chainparams_test.txt
@@ -1,4 +1,4 @@
-00000000000a9fba64efd50956b0b9cb3b8a1eeacc2d7bdd33883f422d106615
-00000000000000000000000000000000000000000000006e89221f3553cd5518
+000000000a7d3070af17e06f73468575fc342ffe041cfa0354288f2f0bf3ff14
+00000000000000000000000000000000000000000000006e8e22969595be7939
 55
 2
diff --git a/src/networks/abc/chainparamsconstants.cpp b/src/networks/abc/chainparamsconstants.cpp
index b5c4fdbb6..b1d9349a3 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("000000000000000014cba9590c49c23f7c349963ec916c4856041c8e3896f60c");
-    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015b136859b1203ab843da32");
+    const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000000000f8cf756598e369407839cd6f0872cddb2e637939be29486");
+    const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("0000000000000000000000000000000000000000015b3f8c642872d3cf173fc1");
     const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = 210;
     const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = 3;
 
-    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("00000000000a9fba64efd50956b0b9cb3b8a1eeacc2d7bdd33883f422d106615");
-    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e89221f3553cd5518");
+    const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("000000000a7d3070af17e06f73468575fc342ffe041cfa0354288f2f0bf3ff14");
+    const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("00000000000000000000000000000000000000000000006e8e22969595be7939");
     const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = 55;
     const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = 2;
 } // namespace ChainParamsConstants