Timedrift exploit on PoS coins to increase minting probability

kactech · February 19, 2015, 10:33am

[member=30004]thehuntergames[/member]
Example: you’ll be able to mint

peercoin/peercoin/blob/master/src/main.cpp

// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Copyright (c) 2011-2018 The Peercoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "alert.h"
#include "checkpoints.h"
#include "db.h"
#include "txdb.h"
#include "net.h"
#include "init.h"
#include "ui_interface.h"
#include "kernel.h"
#include "checkqueue.h"
#include "checkpointsync.h"
#include <boost/algorithm/string/replace.hpp>
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>

This file has been truncated. show original

// Check timestamp against prev if (GetBlockTime() <= pindexPrev->GetMedianTimePast() || GetBlockTime() + nMaxClockDrift < pindexPrev->GetBlockTime()) return error("AcceptBlock() : block's timestamp is too early");

Your stake(/block) time have to be higher than median of past 11 blocks.