diff --git a/src/networks/abc/checkpoints.cpp b/src/networks/abc/checkpoints.cpp
index 4a909aa00..fff648e57 100644
--- a/src/networks/abc/checkpoints.cpp
+++ b/src/networks/abc/checkpoints.cpp
@@ -1,112 +1,114 @@
 // Copyright (c) 2020 The Bitcoin developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <chainparams.h>
 #include <util/system.h>
 
 static CCheckpointData mainNetCheckpointData = {
     .mapCheckpoints = {
         {11111, BlockHash::fromHex("0000000069e244f73d78e8fd29ba2fd2ed6"
                                    "18bd6fa2ee92559f542fdb26e7c1d")},
         {33333, BlockHash::fromHex("000000002dd5588a74784eaa7ab0507a18a"
                                    "d16a236e7b1ce69f00d7ddfb5d0a6")},
         {74000, BlockHash::fromHex("0000000000573993a3c9e41ce34471c079d"
                                    "cf5f52a0e824a81e7f953b8661a20")},
         {105000, BlockHash::fromHex("00000000000291ce28027faea320c8d2b0"
                                     "54b2e0fe44a773f3eefb151d6bdc97")},
         {134444, BlockHash::fromHex("00000000000005b12ffd4cd315cd34ffd4"
                                     "a594f430ac814c91184a0d42d2b0fe")},
         {168000, BlockHash::fromHex("000000000000099e61ea72015e79632f21"
                                     "6fe6cb33d7899acb35b75c8303b763")},
         {193000, BlockHash::fromHex("000000000000059f452a5f7340de6682a9"
                                     "77387c17010ff6e6c3bd83ca8b1317")},
         {210000, BlockHash::fromHex("000000000000048b95347e83192f69cf03"
                                     "66076336c639f9b7228e9ba171342e")},
         {216116, BlockHash::fromHex("00000000000001b4f4b433e81ee46494af"
                                     "945cf96014816a4e2370f11b23df4e")},
         {225430, BlockHash::fromHex("00000000000001c108384350f74090433e"
                                     "7fcf79a606b8e797f065b130575932")},
         {250000, BlockHash::fromHex("000000000000003887df1f29024b06fc22"
                                     "00b55f8af8f35453d7be294df2d214")},
         {279000, BlockHash::fromHex("0000000000000001ae8c72a0b0c301f67e"
                                     "3afca10e819efa9041e458e9bd7e40")},
         {295000, BlockHash::fromHex("00000000000000004d9b4ef50f0f9d686f"
                                     "d69db2e03af35a100370c64632a983")},
         // UAHF fork block.
         {478558, BlockHash::fromHex("0000000000000000011865af4122fe3b14"
                                     "4e2cbeea86142e8ff2fb4107352d43")},
         // Nov, 13 DAA activation block.
         {504031, BlockHash::fromHex("0000000000000000011ebf65b60d0a3de8"
                                     "0b8175be709d653b4c1a1beeb6ab9c")},
         // Monolith activation.
         {530359, BlockHash::fromHex("0000000000000000011ada8bd08f46074f"
                                     "44a8f155396f43e38acf9501c49103")},
         // Magnetic anomaly activation.
         {556767, BlockHash::fromHex("0000000000000000004626ff6e3b936941"
                                     "d341c5932ece4357eeccac44e6d56c")},
         // Great wall activation.
         {582680, BlockHash::fromHex("000000000000000001b4b8e36aec7d4f96"
                                     "71a47872cb9a74dc16ca398c7dcc18")},
         // Graviton activation.
         {609136, BlockHash::fromHex("000000000000000000b48bb207faac5ac6"
                                     "55c313e41ac909322eaa694f5bc5b1")},
         // Phonon activation.
         {635259, BlockHash::fromHex("00000000000000000033dfef1fc2d6a5d5"
                                     "520b078c55193a9bf498c5b27530f7")},
         // Axion activation.
         {661648, BlockHash::fromHex("000000000000000004284c9d8b2c8ff731efeaec6b"
                                     "e50729bdc9bd07f910757d")},
         {664198, BlockHash::fromHex("00000000000000000c2f90578cede892ff39592cce"
                                     "34b2fb89b6d2a122468260")},
+        {680140, BlockHash::fromHex("0000000000000000232c48568b63451d4ac445210"
+                                    "9aa46f8b38c65c3f62f7c0b")},
     }};
 
 static CCheckpointData testNetCheckpointData = {
     .mapCheckpoints = {
         {546, BlockHash::fromHex("000000002a936ca763904c3c35fce2f3556c5"
                                  "59c0214345d31b1bcebf76acb70")},
         // UAHF fork block.
         {1155875,
          BlockHash::fromHex("00000000f17c850672894b9a75b63a1e72830bbd5f"
                             "4c8889b5c1a80e7faef138")},
         // Nov, 13. DAA activation block.
         {1188697,
          BlockHash::fromHex("0000000000170ed0918077bde7b4d36cc4c91be69f"
                             "a09211f748240dabe047fb")},
         // Great wall activation.
         {1303885,
          BlockHash::fromHex("00000000000000479138892ef0e4fa478ccc938fb9"
                             "4df862ef5bde7e8dee23d3")},
         // Graviton activation.
         {1341712,
          BlockHash::fromHex("00000000fffc44ea2e202bd905a9fbbb9491ef9e9d"
                             "5a9eed4039079229afa35b")},
         // Phonon activation.
         {1378461,
          BlockHash::fromHex("0000000099f5509b5f36b1926bcf82b21d936ebeade"
                             "e811030dfbbb7fae915d7")},
         // Axion activation.
         {1421481, BlockHash::fromHex("00000000062c7f32591d883c99fc89ebe74a83287"
                                      "c0f2b7ffeef72e62217d40b")},
     }};
 
 static CCheckpointData regTestCheckpointData = {
     .mapCheckpoints = {
         {0, BlockHash::fromHex("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb4"
                                "36012afca590b1a11466e2206")},
     }};
 
 const CCheckpointData &CheckpointData(const std::string &chain) {
     if (chain == CBaseChainParams::MAIN) {
         return mainNetCheckpointData;
     }
     if (chain == CBaseChainParams::TESTNET) {
         return testNetCheckpointData;
     }
     if (chain == CBaseChainParams::REGTEST) {
         return regTestCheckpointData;
     }
 
     throw std::runtime_error(
         strprintf("%s: Unknown chain %s.", __func__, chain));
 }