/
checkpoints.cpp
149 lines (134 loc) · 8.55 KB
/
checkpoints.cpp
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// Copyright (c) 2009-2017 The Bitcoin developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <boost/assign/list_of.hpp> // for 'map_list_of()'
#include <boost/foreach.hpp>
#include "checkpoints.h"
#include "proofs.h"
#include "txdb.h"
#include "main.h"
#include "uint256.h"
static const int nCheckpointSpan = 5000;
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
(0, Params().HashGenesisBlock())
(1, uint256("0x0000000008f710a0e18d0d04a4b86341346611b3e7984f5ee5b3d9010caa0d38"))
(1000, uint256("0x0000000095750ba4eb4f8d7ac82af03400209e111df3667e51fb6d9cda6edf4d"))
(2000, uint256("0x000000005fdbc5bf8389f15596a06872663e68d49dd84e87de9d2a0494041fec"))
(3000, uint256("0x267761f6aa6eb9b96a4c48e593cf17ed7572dc91125e0e5eeb8ba3ec2efda1d1"))
(5000, uint256("0x411c6b3f7d7730d851536b7a7ce95d0ba3b4f7c8c4c24142e9b01c469d6e9439") )
(10000, uint256("0xe044586abcaae3cb6e7b4756713136ca538c30d0e885edc6a3af6e681b480d05") )
(20000, uint256("0x255d7cf5cbb7eece52fc6752be56c4f180b1bf71d83bbee04b84f33cf498c499") )
(30000, uint256("0xe6bfd03712c8146cc558ecffad3bd529fec3f15eea08b3e8d38f5a4e7c57a2de") )
(40000, uint256("0x11d58efe6ecb82d3c0d3d1dbc3b9cc51460890afe047ac2211da71cc32f8f127") )
(50000, uint256("0xe482040a0ab71589b23dd2fe257d67a2f2712dafb085079d76c6c46dbef91c87") )
(60000, uint256("0xd38b50003666d67bc340bb2343fdc1ebbde36ce597f7975ac3b813b1eb46d184") )
(70000, uint256("0xd8cb10c2f2dd34c75d7e6ea80ae656543bf1f37ae497d4c521e55180abc51bbb") )
(80000, uint256("0xc3af51f48d51b23a738af34f38d56b30066e6c0d1ad95b18f2a1aff5ddafd3fd") )
(90000, uint256("0x17b4cefd793a650a7b87b69223fa7bc68382430be96447c07504ee26ec632211") )
(100000, uint256("0xfac73bc88550f6e8682ccb54002744eef7b2b6ff6495fe01618a8dcd3aa33375") )
(110000, uint256("0x382b974d4f0282036def807d5229d9d97e97b9a3928a591066f77d1e8e58a9e9") )
(130000, uint256("0x3ee4dafd7875038b16b57909692f30c4c553287c487cd56f054b566421995469") )
(150000, uint256("0x0e815b1d3385f31b42f552413ccd03c2a1aace2f409ce1e6708c7ba375f19c6a") )
(160000, uint256("0x9c823e9bef7b1977bdf2aa81f56d84e3611f8898c8fcafca4b6dcba29678e88f") )
(170000, uint256("0xfd3428b280b1e8b00f25c0d34370195aa7c396707d1ac42c7b94ba22c26765a6") )
(180000, uint256("0x346d797caeda2a90e0cd313c55b8210852ef9830031804f4d375494942c77b81") )
(190000, uint256("0x02adc3301ec840e070bbb3e5f9cb814afca92aa32511801bb6317d3d7148376b") )
(200000, uint256("0x99057098c705addb384db3fd7cdf5b56e20c3f25b7d6a77673853416653335cd") )
(210000, uint256("0xd77a0ee3874716767bf57c4c069042aca1bb747814a4565beacb5fcab08be131") )
(220000, uint256("0xeeaf134d5903095a1b57371e61e42803d80650a12d584abc2fcfd7cca16374d4") )
(230000, uint256("0x5598e2bd96af7b4196c36cbe772af28a4976d55196271661e1713ee61f88c662") )
(240000, uint256("0x6a7f4955ef370eef576916d0d55e5b8706b259c9d0fb653deae550e4b58d3226") )
(250000, uint256("0x319315bc50e11cac98b5e1c623c752152dae619875c238543e2b019ca945c392") )
(260000, uint256("0xeea4e7b10824ca0f861fdceb31de38d13149ca98ea6d91a7a7aaa67489bb0226") )
(270000, uint256("0x3708c6e7c368546c3f1898899cf9ed64141afd4629aa7deabaaade36ca7bb1da") )
(280000, uint256("0x47aea455a98143fc757efa52a34573c933d2ac98a28e5b21caa5f0e1e2a31bca") )
(290000, uint256("0x47103a06aefea0f28dc385d2c7087d8c3a4f0c8faf86eb744bb0dc6eed3a8d09") )
(300000, uint256("0x10fd0e64c225b38918404c3b81bf7260d62b60fceda47a4884b92b097321ddaa") )
(310000, uint256("0x80111da6dbaa1f7a8acfa70fe69ec3a7113614954302c75d84d6c37d7e3e6611") )
(320000, uint256("0x03d63bf2cbeef9478ee371adf8b3eda8e0420d343f84176f146fa340568aca86") )
(330000, uint256("0x0e95bc10857dc9c17a0b25dfed899c7bd1b53b0ad7dc288eeb1b67ba655dbb7b") )
(340000, uint256("0x782c4ab3887ec2ce87b850598c5ca1f3ced5531b7b155060b187972bf18ae5a5") )
(350000, uint256("0x7b6f2d6f2608f7af2a482e4abb6f568d4c23a869481ff6b0e53d3ad0f4da12d1") )
(360000, uint256("0xea8fe16e4d19c56c60fa8e59af3d44bb1036fef96508520fb00877b3328058d5") )
(370000, uint256("0xd1392edc0109deaac872a51f20697cdb835695ffec9bec2aa61b4110e06efc86") )
(380000, uint256("0x6c0185275d224c6cfb703a1baae536207fb095be908589b9742d1a806c35ae1d") )
(390000, uint256("0x44a9ea269624163c85499e2a2880fa12be6ff7b5b123f49156897fd1bf0de029") )
(400000, uint256("0x7d872c7a5e08ed6e4983fa242e7b29757ee70eb19f6cfdb1a22a4e1796384485") )
(410000, uint256("0x86f1223127ad37def84b1a20e97269c35d89a3cb02e663bdcea3e2e42d24e516") )
(420000, uint256("0x994cd2ab0b06c7e27d4dc6aab6943ab58924ad2346c57dc045c3c24eee920ff6") )
(430000, uint256("0x666ab7e447ddf94f3f489b5c6bafbd53735bb47147e537431aeafe6428eaa14f") )
(440000, uint256("0x1a9904aa0bc8f6a13df3943af6d144ddd227a1992839c5a86fa9a01e998d7c7c") )
(450000, uint256("0x9e3813f189c94e66c626e763dfcc3d28568d242a86a20c23952d091834fca14b") )
(460000, uint256("0x7f4080c1a29ecad63dca18e102314fcf1cc1353ce6ad571dfb962095adb4fe67") )
(470000, uint256("0x5850ff5f89757816a1cc37d9260415704112fb143d05edc3b8030ea4115a35b5") )
(480000, uint256("0xe07edb2ba8625ce973cfc0900556473e3778b9bfa0ad8454c2206ee63168b6db") )
(490000, uint256("0xb54b79209ae33021fd33b9f2d0232fc5df0ff4db0dda3ef5826eaf4117ecc5a6") )
(500000, uint256("0x7cb9aa0250a0581e14832dece393fb291e5e15bf5f012d9d79c6e6f62b94395a") )
(510000, uint256("0x043331174c99e5ab46002f9e0d66a4985e77fc67fdb8634e9f94818ee062d059") )
(520000, uint256("0x850e1dc60594ba2ef46d9769d15a637bc746a52a4877eaddb32d3b00a439d163") )
(530000, uint256("0xf26cbd8489378fd11cae469d95ecd9b0f25ddd89d83ac74510246d3cd6ef4c07") )
(540000, uint256("0xe878fcdf5059ddf8ee75a1ce554c3607c2e03f461c0d57f7f962e6c7c1733b7b") )
(550000, uint256("0x7901247ed30472a0c8d0e96cbdf9706e5e7f1f1b26c8742ea21e31ec6f33c766") )
(560000, uint256("0x569a1e5e36a0b1253934348b3d636d3383ea0636ac23de4da867246bc081777c") )
(570000, uint256("0x17db255a36f95171378cb8306db6397774ca59117a238d4e38f500697b4f9358") )
/*
*/
;
// TestNet has no checkpoints
static MapCheckpoints mapCheckpointsTestnet;
bool CheckHardened(int nHeight, const uint256& hash)
{
MapCheckpoints& checkpoints = (TestNet() ? mapCheckpointsTestnet : mapCheckpoints);
MapCheckpoints::const_iterator i = checkpoints.find(nHeight);
if (i == checkpoints.end()) return true;
return hash == i->second;
}
int GetTotalBlocksEstimate()
{
MapCheckpoints& checkpoints = (TestNet() ? mapCheckpointsTestnet : mapCheckpoints);
if (checkpoints.empty())
return 0;
return checkpoints.rbegin()->first;
}
CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
{
MapCheckpoints& checkpoints = (TestNet() ? mapCheckpointsTestnet : mapCheckpoints);
BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, checkpoints)
{
const uint256& hash = i.second;
std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
if (t != mapBlockIndex.end())
return t->second;
}
return NULL;
}
// Automatically select a suitable sync-checkpoint
const CBlockIndex* AutoSelectSyncCheckpoint()
{
const CBlockIndex *pindex = pindexBest;
// Search backward for a block within max span and maturity window
while (pindex->pprev && pindex->nHeight + nCheckpointSpan > pindexBest->nHeight)
pindex = pindex->pprev;
return pindex;
}
// Check against synchronized checkpoint
bool CheckSync(int nHeight)
{
const CBlockIndex* pindexSync = AutoSelectSyncCheckpoint();
if (nHeight <= pindexSync->nHeight){
return false;
}
return true;
}
}