What is HYDRA?

The HYDRA Blockchain is a hybrid utilizing the transaction model of Bitcoin and employing the powerful virtual machine of Ethereum. It is based on the Bitcoin Core, Ethereum and Qtum. It features a Proof of Stake consensus mechanism, high transaction throughput, democratic governance of key parameters, predictable network fees and a unique profit-sharing system.

License

HYDRA is GPLv3 licensed

Resources

Mainnet explorer: http://explorer.hydrachain.org/
Testnet explorer: http://testexplorer.hydrachain.org/
Testnet faucet: http://faucet.hydrachain.org
Docs: https://docs.hydrachain.org/
Wallet downloads: https://github.com/Hydra-Chain/node/releases

Building HYDRA Blockchain

Build on Ubuntu (18.04 or lower)

# This is a quick start script for compiling HYDRA on  Ubuntu

sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils git cmake libboost-all-dev libgmp3-dev
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:bitcoin/bitcoin
sudo apt-get update
sudo apt-get install libdb4.8-dev libdb4.8++-dev

# If you want to build the Qt GUI:
sudo apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler qrencode

git clone https://github.com/Hydra-Chain/node.git --recursive HYDRA
cd HYDRA

# Note autogen will prompt to install some more dependencies if needed
./autogen.sh
./configure 
make -j2

Build on Ubuntu (above 18.04)

# This is a quick start script for compiling HYDRA on  Ubuntu

sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils git cmake libboost-all-dev libgmp3-dev
sudo apt-get install software-properties-common

# The below steps are required for installing libdb4.8

cd ~
mkdir dev
cd dev
wget -N http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz
tar -xvf db-4.8.30.NC.tar.gz
sed -i s/__atomic_compare_exchange/__atomic_compare_exchange_db/g db-4.8.30.NC/dbinc/atomic.h
cd db-4.8.30.NC/build_unix
mkdir -p build
BDB_PREFIX=/usr/local
../dist/configure --enable-cxx --prefix=$BDB_PREFIX
make
sudo make install

# Now you can return to the folder in which you will clone the HYDRA repository

# If you want to build the Qt GUI:
sudo apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler qrencode

git clone https://github.com/Hydra-Chain/node.git --recursive HYDRA
cd HYDRA

# Note autogen will prompt to install some more dependencies if needed
./autogen.sh
./configure 
make -j2

Build on CentOS

Here is a brief description for compiling HYDRA on CentOS

# Compiling boost manually
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

# Installing Dependencies for HYDRA
sudo yum install epel-release
sudo yum install libtool libdb4-cxx-devel openssl-devel libevent-devel gmp-devel

# If you want to build the Qt GUI:
sudo yum install qt5-qttools-devel protobuf-devel qrencode-devel

# Building HYDRA
git clone https://github.com/Hydra-Chain/node.git --recursive HYDRA
cd HYDRA
./autogen.sh
./configure
make -j4

Build on Intel MacOS

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

Preparation

Install the OS X command line tools:

xcode-select --install

When the popup appears, click Install.

Then install Homebrew.

Dependencies

brew install cmake automake berkeley-db4 libtool [email protected] miniupnpc openssl pkg-config protobuf qt5 libevent imagemagick librsvg qrencode gmp

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

Build HYDRA

1. Clone the HYDRA source code and cd into HYDRA

    git clone https://github.com/Hydra-Chain/node.git --recursive HYDRA
    cd HYDRA
   

2. Build HYDRA:

   Configure and build the headless HYDRA 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 --with-boost=/usr/local/Cellar/[email protected]/1.76.0_2
   make
   

Run

export DYLD_LIBRARY_PATH=/usr/local/Cellar/[email protected]/1.76.0_2/lib

Then you can either run the command-line daemon using src/hydrad and src/hydra-cli, or you can run the Qt GUI using src/qt/hydra-qt