## 2 Consensus Mechanisms > TODO: needs review, especially if we will use holochain ### Guardian Circles. * 9-99 nodes, each Guardian runs one Guardian Circles Node. Holding all the logic as needed to manage following functions * Checking uptime. * Management of treasury on CHI Chain * Keeping track of capacity used * keeping track of capacity deployed * Providing Proof of Payment (needed for the ZOS nodes to deploy a workload) * Identity Verification * Federation with other Guardian Circles (e.g. around identity and reputation) The Guardian Chain functions can be accessed over OpenRPC.