Bitcoin source code pdf

1. Sorry
you can't modify this
because this source code records the development process of bitcoin along the way, the problems encountered in the mining process and the mining difficulty
there is open source code to mine, so no one can change it

2. As a reminder, bitcoin has been exploited to the end. The principle of bitcoin program determines that the longer the generation interval is, the longer the time to generate a bitcoin may have exceeded its value. After all, we have to consider the power consumption and time of the mining computer. Although bitcoin is still very popular, it's a bit late to start now, and it's unlikely to make money.

3. Open source software, see: https://github.com/bitcoin/bitcoin/

4. And this: https://github.com/bitcoin/bitcoin

5. Bitcoin is a kind of virtual currency in the form of P2P. Point to point transmission means a decentralized payment system. Bitcoin does not rely on specific currency institutions to issue. It is generated through a large number of calculations of specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole
P2P network to confirm and record all transactions
bitcoin trading is carried out through bitcoin trading platform. At present, the better bitcoin trading platforms in China are okcoin, bitcoin China, fire coin network, 796 trading network, etc. the capital of each company is different. Okcoin is based on technology, and fire coin network pays more attention to user experience, But in terms of professionalism, okcoin is relatively good.

6. It's impossible

7. 很多朋友都知道如何在linux平台如何编译比特币程序,但是,到了windows平台,
就会感觉到无从下手. 其实, 比特币程序是跨平台的.
你要编译windows版的比特币程序,基本上有两种方法,一种是在linux平台
(推荐ubuntu 13.10)通过交叉编译的方法来编译.另外一种,就是直接在windows平台编译.
我想,你既然要在windows平台使用,我就详细介绍一下如何在windwows平台编译比特币程序.
我的平台：windows7

第一步:安装变编译环境QT和MINGW,msys
1、msys是一个在windows平台模拟shell的程序
下载安装程序之后，通过安装管理程序，按安装以下内容：
From MinGW installation manager -> All packages -> MSYS
选中以下安装包
msys-base-bin
msys-autoconf-bin
msys-automake-bin
msys-libtool-bin
点 apply changes开始安装他会自动下载安装好
需要注意的是，确保不要安装msys-gcc和msys-w32api ，因为这两个包和我们的编译系统发生冲突
很多人出现一些莫名其妙的问题，就是因为这两个包
2、安装 MinGW-builds
下载并解压缩 i686-4.8.2-release-posix-dwarf-rt_v3-rev3.7z 到C盘根目录 C:\
注意我的目录结构你尽量和我一样
3、设置PATH环境变量，将C:\mingw32\bin;添加到第一个
4、在命令行模式下输入 gc -v 会得到以下内容
c:\gcc -v
Using built-in specs.
COLLECT_GCC=c:\mingw32\bin\gcc.exe
COLLECT_LTO_WRAPPER=c:/mingw32/bin/../libexec/gcc/i686-w64-mingw32/4.8.2/lto-wrapper.exe
Target: i686-w64-mingw32
Configured with: ../../../src/gcc-4.8.2/configure --host=i686-w64-mingw32 --build=i686-w64-mingw32 --target=i686-w64-mingw32 --prefix=/mingw32 --with-sysroot=/c/mingw482/i686-482-posix-dwarf-rt_v3-rev3/mingw32 --with-gxx-include-dir=/mingw32/i686-w64-mingw32/include/c++ --enable-shared --enable-static --disable-multilib --enable-languages=ada,c,c++,fortran,objc,obj-c++,lto --enable-libstdcxx-time=yes --enable-threads=posix --enable-libgomp --enable-libatomic --enable-lto --enable-graphite --enable-checking=release --enable-fully-dynamic-string --enable-version-specific-runtime-libs --disable-sjlj-exceptions --with-dwarf2 --disable-isl-version-check --disable-cloog-version-check --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-bootstrap --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-gnu-as --with-gnu-ld --with-arch=i686 --with-tune=generic --with-libiconv --with-system-zlib --with-gmp=/c/mingw482/prerequisites/i686-w64-mingw32-static --with-mpfr=/c/mingw482/prerequisites/i686-w64-mingw32-static --with-mpc=/c/mingw482/prerequisites/i686-w64-mingw32-static --with-isl=/c/mingw482/prerequisites/i686-w64-mingw32-static --with-cloog=/c/mingw482/prerequisites/i686-w64-mingw32-static --enable-cloog-backend=isl --with-pkgversion='i686-posix-dwarf-rev3, Built by MinGW-W64 project' --with-bugurl=http://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe -I/c/mingw482/i686-482-posix-dwarf-rt_v3-rev3/mingw32/opt/include -I/c/mingw482/prerequisites/i686-zlib-static/include -I/c/mingw482/prerequisites/i686-w64-mingw32-static/include' CXXFLAGS='-O2 -pipe -I/c/mingw482/i686-482-posix-dwarf-rt_v3-rev3/mingw32/opt/include -I/c/mingw482/prerequisites/i686-zlib-static/include -I/c/mingw482/prerequisites/i686-w64-mingw32-static/include' CPPFLAGS= LDFLAGS='-pipe -L/c/mingw482/i686-482-posix-dwarf-rt_v3-rev3/mingw32/opt/lib -L/c/mingw482/prerequisites/i686-zlib-static/lib -L/c/mingw482/prerequisites/i686-w64-mingw32-static/lib -Wl,--large-address-aware'
Thread model: posix
gcc version 4.8.2 (i686-posix-dwarf-rev3, Built by MinGW-W64 project)
至此，你的开发环境已经搭建好了，很简单吧

第二部分：下载bitcoin引用的外部库
我们把它们全部放在 C:\deps目录下

2.1 安装OpenSSL
进入启动 MinGw shell 比如目录：(C:\MinGW\msys\1.0\msys.bat)运行这个msys.bat，就会启动一个shell环境，提示符是$
输入命令
cd /c/deps/
tar xvfz openssl-1.0.1g.tar.gz
cd openssl-1.0.1g
Configure no-shared no-dso mingw
make
等待几分钟后，就把openssl编译好了

2.2 下载Berkeley DB
我们推荐使用 4.8版本
同样在msys shell环境下输入以下命令
cd /c/deps/
tar xvfz db-4.8.30.NC.tar.gz
cd db-4.8.30.NC/build_unix
../dist/configure --enable-mingw --enable-cxx --disable-shared --disable-replication
make
等待编译

2.3 安装Boost
msys命令:
cd C:\deps\boost_1_55_0\
bootstrap.bat mingw
b2 --build-type=complete --with-chrono --with-filesystem --with-program_options --with-system --with-thread toolset=gcc variant=release link=static threading=multi runtime-link=static stage

2.4 安装Miniupnpc
cd C:\deps\miniupnpc
mingw32-make -f Makefile.mingw init upnpc-static
msys shell命令
cd /c/deps/protobuf-2.5.0
configure --disable-shared
make

2.6 qrencode:
命令
cd /c/deps/libpng-1.6.10
configure --disable-shared
make
LIBS="../libpng-1.6.10/.libs/libpng16.a ../../mingw32/i686-w64-mingw32/lib/libz.a" \
png_CFLAGS="-I../libpng-1.6.10" \
png_LIBS="-L../libpng-1.6.10/.libs" \
configure --enable-static --disable-shared --without-tools
make

2.7 安装 Qt 5 库
下载和解压缩
在 windows命令行输入：
set INCLUDE=C:\deps\libpng-1.6.10;C:\deps\openssl-1.0.1g\include
set LIB=C:\deps\libpng-1.6.10\.libs;C:\deps\openssl-1.0.1g
cd C:\Qt\5.2.1
configure.bat -release -opensource -confirm-license -static -make libs -no-sql-sqlite -no-opengl -system-zlib -qt-pcre -no-icu -no-gif -system-libpng -no-libjpeg -no-freetype -no-angle -no-vcproj -openssl-linked -no-dbus -no-audio-backend -no-wmf-backend -no-qml-debug
mingw32-make
set PATH=%PATH%;C:\Qt\5.2.1\bin
cd C:\Qt\qttools-opensource-src-5.2.1
qmake qttools.pro
mingw32-make

3. 下载Bitcoin 0.9.1
在msys shell下输入以下命令行:
cp /c/deps/libpng-1.6.10/.libs/libpng16.a /c/deps/libpng-1.6.10/.libs/libpng.a
cd /c/bitcoin-0.9.1
./autogen.sh
CPPFLAGS="-I/c/deps/boost_1_55_0 \
-I/c/deps/db-4.8.30.NC/build_unix \
-I/c/deps/openssl-1.0.1g/include \
-I/c/deps \
-I/c/deps/protobuf-2.5.0/src \
-I/c/deps/libpng-1.6.10 \
-I/c/deps/qrencode-3.4.3" \
LDFLAGS="-L/c/deps/boost_1_55_0/stage/lib \
-L/c/deps/db-4.8.30.NC/build_unix \
-L/c/deps/openssl-1.0.1g \
-L/c/deps/miniupnpc \
-L/c/deps/protobuf-2.5.0/src/.libs \
-L/c/deps/libpng-1.6.10/.libs \
-L/c/deps/qrencode-3.4.3/.libs" \
./configure \
--disable-upnp-default \
--disable-tests \
--with-qt-incdir=/c/Qt/5.2.1/include \
--with-qt-libdir=/c/Qt/5.2.1/lib \
--with-qt-bindir=/c/Qt/5.2.1/bin \
--with-qt-plugindir=/c/Qt/5.2.1/plugins \
--with-boost-system=mgw48-mt-s-1_55 \
--with-boost-filesystem=mgw48-mt-s-1_55 \
--with-boost-program-options=mgw48-mt-s-1_55 \
--with-boost-thread=mgw48-mt-s-1_55 \
--with-boost-chrono=mgw48-mt-s-1_55 \
--with-protoc-bindir=/c/deps/protobuf-2.5.0/src
make
strip src/bitcoin-cli.exe
strip src/bitcoind.exe
strip src/qt/bitcoin-qt.exe

这样，你就得到了变异好的 bitcoin-cli.exe和bitcoind.exe ,bitcoin-qt.exewindows QT图形界面的钱包软件

8.

Two way opening in futures means you can buy or sell

< H2 >

futures trading can be two-way trading, futures can buy more or short. When the price rises, you can buy low and sell high; when the price falls, you can sell high and buy low. Long can make money, and short can also make money, so there is no bear market in futures. In a bear market, the stock market will be depressed, but the futures market will still be prosperous and the opportunities will remain

the day of futures settlement can be one week later, one month later, three months later, or even one year later. A contract or agreement to buy or sell futures is called a futures contract. The place where futures are traded is called the futures market. Investors can invest or speculate in futures

{rrrrrrr}

< H2 > extended information:

basic system of futures

1. Position limit system

position limit system refers to the system that futures exchanges limit the number of positions held by members and customers in order to prevent manipulation of market prices and excessive concentration of futures market risks on a small number of investors. If the limit is exceeded, the exchange may close the position or increase the margin ratio

Large account reporting system means that when the speculative position of a certain type of position contract of a member or client reaches more than 80% of the position limit (including the principal) specified by the exchange, the member or client shall report its capital and position to the exchange, and the client shall report through the brokerage member

9. 804, just at the gate of the station, there is a 804 stop sign. It's 2 yuan. It's a 10 minute bus. It's about 20 minutes to the airport