Update License in File Headers
[novacoin.git] / src / checkpoints.cpp
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.
4
5 #include <boost/assign/list_of.hpp> // for 'map_list_of()'
6 #include <boost/foreach.hpp>
7
8 #include "checkpoints.h"
9
10 #include "main.h"
11 #include "uint256.h"
12
13 namespace Checkpoints
14 {
15     typedef std::map<int, uint256> MapCheckpoints;
16
17     //
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
21     //    timestamp before)
22     // + Contains no strange transactions
23     //
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"))
36         ;
37
38     bool CheckBlock(int nHeight, const uint256& hash)
39     {
40         if (fTestNet) return true; // Testnet has no checkpoints
41
42         MapCheckpoints::const_iterator i = mapCheckpoints.find(nHeight);
43         if (i == mapCheckpoints.end()) return true;
44         return hash == i->second;
45     }
46
47     int GetTotalBlocksEstimate()
48     {
49         if (fTestNet) return 0;
50
51         return mapCheckpoints.rbegin()->first;
52     }
53
54     CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
55     {
56         if (fTestNet) return NULL;
57
58         BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
59         {
60             const uint256& hash = i.second;
61             std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
62             if (t != mapBlockIndex.end())
63                 return t->second;
64         }
65         return NULL;
66     }
67 }