@ingoberlab [...] The cooperation is based on a Round-robin style. But this can only be done thanks to the architecture of FairCoin, where the miners are owned by well-known people in the FairCoin community (which has a lot of meatspace life).
So, the round-robin like mining has also another point to reach consensus. If 7 miners are taking part, the miner who has to mine the block needs at least 5 signatures of the others. That way nobody is going to mine more than what the network accepts[...]