1 // Copyright (c) 2011 The Bitcoin developers
2 // Copyright (c) 2011-2012 The PPCoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
5 #ifndef BITCOIN_CHECKPOINT_H
6 #define BITCOIN_CHECKPOINT_H
11 // ppcoin: auto checkpoint min at 8 hours; max at 16 hours
12 #define AUTO_CHECKPOINT_MIN_SPAN (60 * 60 * 8)
13 #define AUTO_CHECKPOINT_MAX_SPAN (60 * 60 * 16)
14 #define AUTO_CHECKPOINT_TRUST_SPAN (60 * 60 * 24)
20 // Block-chain checkpoints are compiled-in sanity checks.
21 // They are updated every release or three.
25 // Returns true if block passes checkpoint checks
26 bool CheckHardened(int nHeight, const uint256& hash);
28 // Return conservative estimate of total number of blocks, 0 if unknown
29 int GetTotalBlocksEstimate();
31 // Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
32 CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex);
34 // ppcoin: synchronized checkpoint
35 extern uint256 hashSyncCheckpoint;
37 // ppcoin: automatic checkpoint
38 extern int nAutoCheckpoint;
39 extern int nBranchPoint;
41 bool CheckAuto(const CBlockIndex *pindex);
42 int GetNextChainCheckpoint(const CBlockIndex *pindex);
43 int GetNextAutoCheckpoint(int nCheckpoint);
44 void AdvanceAutoCheckpoint(int nCheckpoint);
45 bool ResetAutoCheckpoint(int nCheckpoint);