text: #ifndef MARINECORE_CHECKPOINT_H
  #define  MARINECORE_CHECKPOINT_H
  
  #include <map>
  
  class uint256;
  class CBlockIndex;
  
  namespace Checkpoints
  {
      bool CheckBlock(int nHeight, const uint256& hash);
  
      int GetTotalBlocksEstimate();
  
      CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex);
  }
  
  #endif
  