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Implementation of Veles Core blockchain with features such dynamic block rewards and halving schedule, independent multi-algo PoW consensus, protected against common issues such as 51% attacks.

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Veles Core integration/staging tree

Master Build Status Latest Release Licence

https://veles.network

About Veles

Veles Core is an open-source blockchain ecosystem providing services such as decentralized VPN in order to help people to defend their online privacy and free access to an information. Backed by unique blockchain with features such dynamic block rewards and halving schedule, independent multi-algo PoW consensus and other approaches against 51% attacks, an insta-mine protection or a dead-lock protection. Designed as multi-tiered network building on the concept of self-incentivized Masternodes which provide robust service and governance layer.

Stable 0.18 "Blockchain Baracuda" branch

This is master branch of Veles Core wallet and blockhain node. For the service layer implementation refer to Veles Masternode repository. Stable releases are marked with git tags and can cloned using commands below. If you still need, for some reason, to use oldstable branch 0.17 "Aged Amnesia", for which are security and consensus updates still provided, use the latest version from 0.17 branch.

Build Instructions and Notes

  1. Clone the repository and checkout to latest stable release using following commands. (Alternatively you can download and extract the latest source tarball manually from Releases page on our GitHub.)

    git clone https://github.com/velescore/veles.git
    cd veles
    git checkout `git tag | sort -V | grep -v "\-rc" | tail -1`
    
  2. Build Veles Core: Configure and build the headless Veles Core 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
    

Linux (Ubuntu) Notes

  1. Update your package index

    sudo apt-get update
    
  2. Install required dependencies from default repository

    sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils libboost-all-dev
    
  3. Install latest Berkeley DB 4.8 from Bitcoin repository

    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
    

GUI wallet dependencies

If you also want to build an official GUI wallet, you'll need to perform the following step as well and install additional dependencies:

  1. Install QT 5

    sudo apt-get install libminiupnpc-dev libzmq3-dev
    sudo apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler libqrencode-dev
    

macOS Notes

See (doc/build-osx.md) for instructions on building on Mac OS X.

Windows (64/32 bit) Notes

See (doc/build-windows.md) for instructions on building on Windows 64/32 bit.

License

Veles Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Veles Core.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python, that are run automatically on the build server. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The Travis CI system makes sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

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Implementation of Veles Core blockchain with features such dynamic block rewards and halving schedule, independent multi-algo PoW consensus, protected against common issues such as 51% attacks.

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