QbaoChain is a kind of Consortium Blockchain. Every node involved in the Blockchain system is licensed. Unlicensed nodes cannot be connected to the system. The affiliate chain is a Blockchain that requires registration, also known as the Permissioned Blockchain. QbaoChain not only perfectly realizes the characteristics of the blockchain that can not be tampered, forged, denied, distributed, no trust, point-to-point, collective maintenance, etc. QbaoChain is designed from the overall architecture to node coding development. From consensus algorithms to object storage; From encryption algorithms to broadcast strategies; From performance tuning to QbaoChain, there are huge innovations and breakthroughs. Therefore, QbaoChain has more obvious advantages over the original public chain.

Powerful Functionality
Adopting the UTXO account model of BTC, which supports the simultaneous processing of multiple UTXO, is therefore highly scalable, enabling parallel transactions and encouraging scalability innovations. Also, if a user USES a new address for each transaction, UTXO can provide powerful anonymity to prevent it from being tracked. In addition to this, QbaoChain also supports a strong contract layer, a smart contract is a set of conventions defined in digital form, including those on which the contract participants can enforce them. Because of the immutable and distributed nature of blockchain, smart contracts, once created, can never be changed and can therefore solve trust issues. regularly to indicate new official, stable release versions of Qtum.

Lightning Speed
BTC trade at the rate of 3 per second, ETH speed is 6.7 per second, IBM's books theoretical peak is 200 transactions per second, by redesigning our consensus mechanism, separation of consensus steps, to discuss first, greatly improve the performance of the block chain network, in QbaoChain QbaoChain trading speed can reach 5000 transactions per second, as the future network bandwidth upgrade, further improve speed.

Higher Safety
The information on the coalition chain is not accessible to all, and only the nodes on the alliance chain can be accessed, thus providing high-level security. It not only has the privacy of the private chain, but also has the decentralization thinking of the public chain, which ensures the high privacy of data on the chain and avoids the occurrence of attacks on nodes.

Ultralight Storage
BTC blockchain requires huge storage space of tens of gigabytes, some even larger, which requires nodes to provide proprietary large-capacity storage devices, and in QbaoChain, the space required for QbaoChain will shrink by about 100 times, or even less. Because it only needs to store the data after blockchain hash and key checkpoints, the storage space is reduced directly to a dozen M or even several M.

A Truly Private Wallet
BTC/ETH kind of wallet must with the help of a centralized server, often stolen events, QbaoChain provide real private decentralized purse, wallet to store in the center of the third party no longer on the server, but rather direct access to the block chain nodes, and better protect the private key, my wallet is no longer as third-party credit problems, safety problems lead to lost wallet, has realized the real can't steal block chain private purses.

Qtc Core is our primary mainnet wallet. It implements a full node and is capable of storing, validating, and distributing all history of the Qbao network. Qtc Core is considered the reference implementation for the Qtum network.

Qtc Core currently implements the following:

• Sending/Receiving Qtc

• Sending/Receiving QRC20 tokens on the Qbao network

• Staking and creating blocks for the Qbao network

• Creating and interacting with smart contracts

• Running a full node for distributing the blockchain to other users

• "Prune" mode, which minimizes disk usage

• Regtest mode, which enables developers to very quickly build their own private Qbao network for Dapp testing

• Compatibility with the Bitcoin Core set of RPC commands and APIs

Qtc Core uses a full node model, and thus requires downloading the entire blockchain. If you do not need the entire blockchain, and do not intend on developing smart contracts, it may be more ideal to use an alternative wallet such as one of our light wallets that can be synchronized in a matter of seconds.

These wallets run on mobile devices and synchronize quickly.
Android Download:
https://play.google.com/store/apps/details?id=org.qtc.wallet

iOS Download:
https://github.com/qtcproject/qtc-ios (open source, we are still working with Apple to get approval for their app store)

This is a quick start script for compiling Qtc on Ubuntu.

####1.Install protobuf(The version of apt-get is too low)

wget https://github.com/google/protobuf/archive/v3.5.1.tar.gz
tar -xzvf v3.5.1.tar.gz
cd protobuf-3.5.1/ 
./autogen.sh 
./configure --prefix=/usr/local/protobuf 
make -j8 && make install 
ldconfig

#####2.Installing Dependencies for Qtc

apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils git cmake libboost-all-dev
apt-get install software-properties-common
add-apt-repository ppa:bitcoin/bitcoin
apt-get update
apt-get install libdb4.8-dev libdb4.8++-dev

apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler qrencode

git clone --recursive http://43.254.148.146:83/QbaoChain/perfect.git
cd qtc
./autogen.sh
./configure 

Here is a brief description for compiling Qtc on CentOS

sudo yum install python-devel bzip2-devel
git clone https://github.com/boostorg/boost.git
cd boost
git checkout boost-1.66.0
git submodule update --init --recursive
./bootstrap.sh --prefix=/usr --libdir=/usr/lib64
./b2 headers
sudo ./b2 -j4 install

sudo yum install epel-release
sudo yum install libtool libdb4-cxx-devel openssl-devel libevent-devel
# If you want to build the Qt GUI:
sudo yum install qt5-qttools-devel protobuf-devel qrencode-devel
# Building Qtc
git clone --recursive http://43.254.148.146:83/QbaoChain/perfect.git
cd qtc
./autogen.sh
./configure
make -j4

The commands in this guide should be executed in a Terminal application. The built-in one is located in /Applications/Utilities/Terminal.app.

Install the OS X command line tools:

xcode-select --install

When the popup appears, click Install.

Then install Homebrew.

brew install cmake automake berkeley-db4 libtool --c++11 --without-single --without-static miniupnpc openssl pkg-config protobuf qt5 libevent imagemagick --with-librsvg qrencode

NOTE: Building with Qt4 is still supported, however, could result in a broken UI. Building with Qt5 is recommended.

######1. Clone Homebrew source code and cd into homebrew-core

 git clone https://github.com/Homebrew/homebrew-core.git

######2. check boost commit log

	 git log ./Formula/boost.rb | less

######3. checkout git HEAD to commitId: 6308e2c01c0821f899acd75e47321cd3aa882680 ( boost --version 1.66.0)

	git checkout 6308e2c01c0821f899acd75e47321cd3aa882680

######4. brew install boost

	brew install ./Formula/boost.rb

NOTE: the support boost version must be 1.66 or less 1.60

######1. Clone the qtc source code and cd into qtc

 git clone --recursive http://43.254.148.146:83/QbaoChain/perfect.git
 cd qtc

######2. Build qtc-core:

Configure and build the headless qtc binaries as well as the GUI (if Qt is found).
You can disable the GUI build by passing `--without-gui` to configure.
 ./autogen.sh
 ./configure
 make

######3. It is recommended to build and run the unit tests:

 make check

######1. mkdir qtc folder and touch qtc.conf

	mkdir /Users/$UserName/Library/Application\ Support/Qtc
	cd /Users/$UseName/Library/Application\ Support/Qtc
	touch qtc.conf

Note: replace $UserName to your computer name

######2. echo cofiguration parmeter to qtc.conf, The list of configuration parameters is as follows:

addressindex=1
timestampindex=1
spentindex=1
rpcuser=admin
rpcpassword=admin
rpcallowip=0.0.0.0/0
addrindex=1
txindex=1
#zmqpubhashtx=tcp://0.0.0.0:4000
zmqpubhashblock=tcp://0.0.0.0:4000
#daemon=1
logevents=1
chain=cup
server=1
addnode=47.100.27.65
addnode=172.16.3.60
#debug=zmq
maxmempool=100000

######3. mkdir chain_cup and add configuration file

	mkdir chain_cup
	cd chain_cup
	touch qtc.conf

######4. echo cofiguration parmeter to qtc.conf, The list of configuration parameters is as follows:

poa=1
token-name=CUP
genesis-input=world cup
msgstart=1234aabb
poa-miner-list=QWXrSap9kvsoPmq9YrXp87NQQn4utwVqTk,QgZLtFbLAdRLcmEHtf6jscv9ZVCuHHtDEF,QS7AgqJNkiVhiEyNw9CTLE1dTWwdkAown2
poa-interval=5
poa-timeout=3
default-port=8444
subsidy-init=666
subsidy-halving-interval=1500000
subsidy-halving-time=8

####(1) command-line Then you can enter the project path, for example,cd ~/qtc.

# enter your project path
cd ~/qtc/src
# 
./qtcd -daemon 

And then, you can do something by your input commands, as:

#get block chain height
./qtc-cli getblockcount
#get the blockHash of the first block 
./qtc-cli getblockhash 1
#get the chain params
./qtc-cli getinfo

####(2) GUI If you want run Qt GUI, you need use OSX, not ubuntu, also input command:

cd ~/qtc/src/qt
./qtc-qt

And then you can using the GUI program Efficiently.