+
−// Copyright (c) 2009-2012 The Bitcoin developers
+
−// Distributed under the MIT/X11 software license, see the accompanying
+
−// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
−#ifndef BITCOIN_CHECKPOINT_H
+
−#define  BITCOIN_CHECKPOINT_H
+
−
+
−#include <map>
+
−
+
−class uint256;
+
−class CBlockIndex;
+
−
+
−/** Block-chain checkpoints are compiled-in sanity checks.
+
− * They are updated every release or three.
+
− */
+
−namespace Checkpoints
+
−{
+
−    // Returns true if block passes checkpoint checks
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−    bool CheckBlock(int nHeight, const uint256& hash);
+
−
+
−    // Return conservative estimate of total number of blocks, 0 if unknown
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−    int GetTotalBlocksEstimate();
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−
+
−    // Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
+
−    CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex);
+
−}
+
−
+
−#endif