update checkpoints

src/checkpoints/checkpoints.cpp

@@ -217,6 +217,8 @@ namespace cryptonote
     ADD_CHECKPOINT2(271600,  "9597cdbdc52ca57d7dbd8f9c0a23a73194ef2ebbcfdc75c21992672706108d43", "0x1e2d2d6a2a9e8");
     ADD_CHECKPOINT2(278300,  "b10dcdf7a51651f60fbcc0447409773eef1458d2c706d9a61daf467571ac19c9", "0x20a83a16d3968");
     ADD_CHECKPOINT2(282700,  "79c06cafd7cb5f76bcebbf8f1ae16203bb41fd75b284bcd0eb0b457991ab7d4a", "0x22e3baf142de8");
+    ADD_CHECKPOINT2(307692,  "d822cd72037f62824ec87c9dc11768b45dc2632f697fa372e1885789c90f37fc", "0x305e124633878"); // low has block (Difficulty: 1890000), reason why careful people have audits
+    ADD_CHECKPOINT2(307800,  "3594894b4231cfdfe911afed6552f9fb4cfe6048bacd0973a3a98623ec8548ce", "0x308b305ca7618");
     return true;
   }
 

src/cryptonote_core/blockchain.cpp

@@ -5460,7 +5460,7 @@ void Blockchain::cancel()
 }
 
 #if defined(PER_BLOCK_CHECKPOINT)
-static const char expected_block_hashes_hash[] = "cd0bfa35324c7486bf92d6d1058ad95df89f6c186dabd652e53a560ee5863b06";
+static const char expected_block_hashes_hash[] = "392961db5c3578616c40283e5469f5fae7f628a0b4a13c87db9339cad35f8e53";
 void Blockchain::load_compiled_in_block_hashes(const GetCheckpointsCallback& get_checkpoints)
 {
   if (get_checkpoints == nullptr || !m_fast_sync)