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+ 0B7CA89FD0A4045EF9553FF439C4FD39DDDD92069CA97B29DECBC31D2F96A004E0015B453DBF4C4669555ED997FFD02F1066C43F346FEB8CD0ADE0B80772E863bitcoin/src/checkpoints.cpp(0 . 0)(1 . 65)
3510 // Copyright (c) 2009-2012 The Bitcoin developers
3511 // Distributed under the MIT/X11 software license, see the accompanying
3512 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
3513
3514 #include <boost/assign/list_of.hpp> // for 'map_list_of()'
3515 #include <boost/foreach.hpp>
3516
3517 #include "headers.h"
3518 #include "checkpoints.h"
3519
3520 namespace Checkpoints
3521 {
3522 typedef std::map<int, uint256> MapCheckpoints;
3523
3524 //
3525 // What makes a good checkpoint block?
3526 // + Is surrounded by blocks with reasonable timestamps
3527 // (no blocks before with a timestamp after, none after with
3528 // timestamp before)
3529 // + Contains no strange transactions
3530 //
3531 static MapCheckpoints mapCheckpoints =
3532 boost::assign::map_list_of
3533 ( 11111, uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
3534 ( 33333, uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
3535 ( 68555, uint256("0x00000000001e1b4903550a0b96e9a9405c8a95f387162e4944e8d9fbe501cd6a"))
3536 ( 70567, uint256("0x00000000006a49b14bcf27462068f1264c961f11fa2e0eddd2be0791e1d4124a"))
3537 ( 74000, uint256("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
3538 (105000, uint256("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
3539 (118000, uint256("0x000000000000774a7f8a7a12dc906ddb9e17e75d684f15e00f8767f9e8f36553"))
3540 (134444, uint256("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
3541 (140700, uint256("0x000000000000033b512028abb90e1626d8b346fd0ed598ac0a3c371138dce2bd"))
3542 (168000, uint256("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763"))
3543 ;
3544
3545 bool CheckBlock(int nHeight, const uint256& hash)
3546 {
3547 if (fTestNet) return true; // Testnet has no checkpoints
3548
3549 MapCheckpoints::const_iterator i = mapCheckpoints.find(nHeight);
3550 if (i == mapCheckpoints.end()) return true;
3551 return hash == i->second;
3552 }
3553
3554 int GetTotalBlocksEstimate()
3555 {
3556 if (fTestNet) return 0;
3557
3558 return mapCheckpoints.rbegin()->first;
3559 }
3560
3561 CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
3562 {
3563 if (fTestNet) return NULL;
3564
3565 BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
3566 {
3567 const uint256& hash = i.second;
3568 std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
3569 if (t != mapBlockIndex.end())
3570 return t->second;
3571 }
3572 return NULL;
3573 }
3574 }