PPCoin: Only immediately checkpoint proof-of-work block

[novacoin.git] / src / checkpoints.h

diff --git a/src/checkpoints.h b/src/checkpoints.h
index cc4bebd..be18c79 100644 (file)
--- a/src/checkpoints.h
+++ b/src/checkpoints.h
@@ -10,6 +10,7 @@
 #include "util.h"
 
 #define STAKE_MIN_AGE (60 * 60 * 24)      // minimum age for coin age
+#define CHECKPOINT_MAX_SPAN (60 * 60 * 4) // max 4 hours before latest block
 
 class uint256;
 class CBlockIndex;
@@ -37,6 +38,7 @@ namespace Checkpoints
     CBlockIndex* GetLastSyncCheckpoint();
     bool WriteSyncCheckpoint(const uint256& hashCheckpoint);
     bool AcceptPendingSyncCheckpoint();
+    uint256 AutoSelectSyncCheckpoint();
     bool CheckSync(const uint256& hashBlock, const CBlockIndex* pindexPrev);
     bool WantedByPendingSyncCheckpoint(uint256 hashBlock);
     bool ResetSyncCheckpoint();