The Concurrence fleet is currently operating in the Ropsten testnet. Smart contract developers reserve (CCCE) token for a generic request. Miners are signaled by the request events to execute off-chain code and generate a response on which they stake (CCCE) token. Those responses are aggregated in combiners to draw a deterministic consensus on-chain, reward good actors, and deliver the concurrence to developer contracts.
This code is completely unvetted. Ideally, we will get our contracts out publicly and perform an audit once we have more traction. If other developers find security risks (without a doubt, they exist), please contact us and we can deploy updates.