update checkpoints

src/checkpoints/checkpoints.cpp

@@ -218,6 +218,10 @@ namespace cryptonote
     ADD_CHECKPOINT2(312130,  "e0da085bd273fff9f5f8e604fce0e91908bc62b6b004731a93e16e89cb9b1f54", "0x3cfe7148f2e18");
     ADD_CHECKPOINT2(324600,  "b24cd1ed7c192bbcf3d5b15729f2b032566687f96bda6f8cb73a5b16df4c6e6b", "0x69caecbe78718");
     ADD_CHECKPOINT2(327700,  "f113c8cbe077aab9296ecbfb41780c147aeb54edfece7e4b9946b8abd0f06de7", "0x732431429c818");
+    ADD_CHECKPOINT2(331170,  "05243fba853fe375c671a6783eecac28777bca51f5977d5285c235424e52bb69", "0x7c3469310d218"); //Hard fork to v18
+    ADD_CHECKPOINT2(331458,  "f79a664a5e4bc11fa7d804be2c3c72db50c87a27f1f540f337564cbb6314e4cd", "0x7c34d47adf218"); //Hard fork to v19
+    ADD_CHECKPOINT2(331891,  "faceea4b4ab33fc962c24dfa2f98c2aeda4788f67c1e0044c62419912c1a64fe", "0x7c359086aeb58"); // restart DIFFICULTY_WINDOW
+    ADD_CHECKPOINT2(332100,  "d32c409058c1eceb9a105190c7a5f480b2d6f49f318b18652b49ae971c710124", "0x7c538441cca36");
     return true;
   }
 

src/cryptonote_core/blockchain.cpp

@@ -5541,7 +5541,7 @@ void Blockchain::cancel()
 }
 
 #if defined(PER_BLOCK_CHECKPOINT)
-static const char expected_block_hashes_hash[] = "6dd0d016366b906ed9e493f721d3b3f60c0db628774206424651b6e8f2a76a95";
+static const char expected_block_hashes_hash[] = "00b4308f939149e2b4ec3f133bb7215075e868042f73e295826ff85764dbdfaa";
 void Blockchain::load_compiled_in_block_hashes(const GetCheckpointsCallback& get_checkpoints)
 {
   if (get_checkpoints == nullptr || !m_fast_sync)