1 // Copyright (c) 2009-2012 The Bitcoin developers
2 // Distributed under the MIT/X11 software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 #include <boost/assign/list_of.hpp> // for 'map_list_of()'
6 #include <boost/foreach.hpp>
8 #include "checkpoints.h"
15 typedef std::map<int, uint256> MapCheckpoints;
18 // What makes a good checkpoint block?
19 // + Is surrounded by blocks with reasonable timestamps
20 // (no blocks before with a timestamp after, none after with
22 // + Contains no strange transactions
24 static MapCheckpoints mapCheckpoints =
25 boost::assign::map_list_of
26 ( 11111, uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
27 ( 33333, uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
28 ( 68555, uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a"))
29 ( 70567, uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a"))
30 ( 74000, uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
31 (105000, uint256("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
32 (118000, uint256("0x000000000000774a7f8a7a12dc906ddb9e17e75d684f15e00f8767f9e8f36553"))
33 (134444, uint256("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
34 (140700, uint256("0x000000000000033b512028abb90e1626d8b346fd0ed598ac0a3c371138dce2bd"))
35 (168000, uint256("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763"))
38 bool CheckBlock(int nHeight, const uint256& hash)
40 if (fTestNet) return true; // Testnet has no checkpoints
42 MapCheckpoints::const_iterator i = mapCheckpoints.find(nHeight);
43 if (i == mapCheckpoints.end()) return true;
44 return hash == i->second;
47 int GetTotalBlocksEstimate()
49 if (fTestNet) return 0;
51 return mapCheckpoints.rbegin()->first;
54 CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
56 if (fTestNet) return NULL;
58 BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
60 const uint256& hash = i.second;
61 std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
62 if (t != mapBlockIndex.end())