Veles Core is an open source software project that aims to help Internet users maintain freedom of information access and improve the privacy of communications over the Internet by building services such as distributed VPN and multi-hop support. VLS adopts a multi-algorithm POW mechanism, so that the network is protected by a large number of miners with different equipment. The node network will be established in two layers, the master node will provide the core functions of distributed services, and the Tier II master node will be implemented as a lightweight exit node. Dynamic PoW rewards based on hash value, automatically adjusted after each halving cycle. In order to provide an environment most suitable for the needs of dVPN and other privacy-guaranteed distributed services, we have built a custom blockchain and master node network, aiming to achieve stable, secure and reliable network services.