// Distributed under the MIT/X11 software license, see the accompanying
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
-#include "checkpoints.h"
-#include "uint256.h"
-#include "util.h"
-
#include <boost/assign/list_of.hpp> // for 'map_list_of()'
+#include <boost/foreach.hpp>
+
+#include "headers.h"
+#include "checkpoints.h"
namespace Checkpoints
{
typedef std::map<int, uint256> MapCheckpoints;
+ //
+ // What makes a good checkpoint block?
+ // + Is surrounded by blocks with reasonable timestamps
+ // (no blocks before with a timestamp after, none after with
+ // timestamp before)
+ // + Contains no strange transactions
+ //
static MapCheckpoints mapCheckpoints =
boost::assign::map_list_of
- ( 11111, uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
- ( 33333, uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
- ( 68555, uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a"))
- ( 70567, uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a"))
- ( 74000, uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
- (105000, uint256("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
- (118000, uint256("0x000000000000774a7f8a7a12dc906ddb9e17e75d684f15e00f8767f9e8f36553"))
- (134444, uint256("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
- (140700, uint256("0x000000000000033b512028abb90e1626d8b346fd0ed598ac0a3c371138dce2bd"))
- ;
+ ( 0, hashGenesisBlock )
+ ; // ppcoin: no checkpoint yet; to be created in future releases
bool CheckBlock(int nHeight, const uint256& hash)
{
int GetTotalBlocksEstimate()
{
- if (fTestNet) return 0; // Testnet has no checkpoints
+ if (fTestNet) return 0;
return mapCheckpoints.rbegin()->first;
}
+
+ CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
+ {
+ if (fTestNet) return NULL;
+
+ int64 nResult;
+ BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
+ {
+ const uint256& hash = i.second;
+ std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
+ if (t != mapBlockIndex.end())
+ return t->second;
+ }
+ return NULL;
+ }
}