To assist with total order determination of events, nodes declare to the network a periodic commitment of all events they have seen. The commitment is tamper-proof as they are signed by the producing nodes. A node may be requested to provide information to enable verification of any commitments it has produced at any time. They should deliver all the relevant Atom hashes to the requesting node, allowing it to reconstruct the commitment hash and verify. Requesting nodes can then take appropriate action in the event of a fraudulent commitment being detected.
This uncertainty of when a commitment verification may be requested prevents nodes from tampering with their logical clock values, as all commitments have a logical clock value associated with them and so tampering is easily detectable.