Compiling BTC wallet with windows

1. The essence of BTC is a distributed, algorithm-based and public network account book (just as the essence of a bank is a private account book which is not publicly controlled by the central government). The wallet (private key) is actually the right for you to modify the account number (public key or bitcoin address) in the account book. The wallet corresponds to the account number. In fact, the specific wallet file contains more than one private key information, which can be copied to other places for use. As long as you have the private key corresponding to the account, it's like having the password of the bank card. Understand the above, you should also understand the answer to your question - B has 10btc on the address. It's not about the computer. This may be better understood by you: wallet = private key (bank card password) + public key (bank card number) BTC network system = Bank, access to BTC network with wallet = bank card inserted into ATM and certified, payment = transfer to other accounts.

2. There is no backup private key or mnemonic word. If not, it will be troublesome. Basically, it is impossible to find it.

3. 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

5. Imtoken doesn't have BTC wallet, it can only store erc20 token

6. Bitcoin, lightcoin and all kinds of counterfeit coins are stored on the computer, so you need to keep your wallet
back up your wallet
the first thing you need to do is back up your wallet. It is recommended that you do so immediately after installing the client. In this way, in the case of your computer failure and data loss, you can recover your wallet at any time, so that you can use it.

7. Bitcoin, lightcoin and all kinds of counterfeit coins are stored on the computer, so you need to keep your wallet
the first thing you need to do is to back up your wallet. It is recommended that you do so immediately after installing the client. In this way, in the case of your computer failure and data loss, you can recover your wallet at any time, so that you can use it.

8. 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下载：
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

2.5下载 protoc 和 libprotobuf:
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
ode:
cd /c/deps/qrencode-3.4.3
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
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