  In bilateral accounting of resource consumption both the consumer and
provider independently measure the amount of resources consumed by the
consumer. The problem here is that potential disparities between the provider's
and consumer's accountings, might lead to conflicts between the two parties
that need to be resolved. We argue that with the proper mechanisms available,
most of these conflicts can be solved online, as opposite to in court
resolution; the design of such mechanisms is still a research topic; to help
cover the gap, in this paper we propose a peer--to--peer protocol for online
dispute resolution over storage consumption. The protocol is peer--to--peer and
takes into consideration the possible causes (e.g, transmission delays,
unsynchronized metric collectors, etc.) of the disparity between the provider's
and consumer's accountings to make, if possible, the two results converge.
