Published by Mario Oettler on

Coordination is in a decentralized blockchain essential. Miners, for example, need to agree on blocks. But they can only agree on their blocks if they follow the same rules (protocol). The question is, how do they agree on a set of rules?

But before we dive into the solution of this task, we give an overview of the main issue of (decentralized) coordination. For that reason, we consider two players, A and B, who cannot communicate. In the sense of a blockchain, the lack of communication can also be interpreted as incomplete network knowledge.