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genesis                 1 // Copyright (c) 2011 The Bitcoin developers
genesis                 2 // Distributed under the MIT/X11 software license, see the accompanying
genesis                 3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
genesis                 4 #ifndef BITCOIN_CHECKPOINT_H
genesis                 5 #define  BITCOIN_CHECKPOINT_H
genesis                 6 
genesis                 7 #include <map>
genesis                 8 #include "util.h"
genesis                 9 
genesis                10 class uint256;
genesis                11 class CBlockIndex;
genesis                12 
genesis                13 //
genesis                14 // Block-chain checkpoints are compiled-in sanity checks.
genesis                15 // They are updated every release or three.
genesis                16 //
genesis                17 namespace Checkpoints
genesis                18 {
genesis                19     // Returns true if block passes checkpoint checks
genesis                20     bool CheckBlock(int nHeight, const uint256& hash);
genesis                21 
genesis                22     // Return conservative estimate of total number of blocks, 0 if unknown
genesis                23     int GetTotalBlocksEstimate();
genesis                24 
genesis                25     // Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
genesis                26     CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex);
genesis                27 }
genesis                28 
genesis                29 #endif