Privatix is an open source platform that includes an exit nodes network and software for Agents. And the bandwidth marketplace as an integral part of it.
In order to involve more Agents in the network — they will need to be incentivized.
The huge difference between the two of us is that we at Privatix do not believe that a consumer VPN alone can create enough demand for Agent’s bandwidth and therefore ensure good prices.
Privatix will not only work on network and supported software, it will also create proof-of-concept products that will be built on the Privatix Network and will create a DEMAND for Agent’s bandwidth.

Please read this post:
https://medium.com/privatix/privatix-vs-mysterium-5b40a0904d94

You can contribute BTC, LTC or other altcoins in Privatix Dashboard (via shapeshift), but you need ERC20 compatible ETH wallet to store PRIX tokens.