The distributed index may be used, for example, to route messages between participating peers, in identifying and authenticating peers wishing to participate, in notifying peers of newly joined peers, and in notifying joining {TAIL ~ peers} of {HEAD ~ participating peers} 
The distributed index may be used , for example , to route messages between participating peers , in identifying and authenticating peers wishing to participate , in notifying peers of newly joined peers , and in notifying joining { TAIL ~ peers } of { HEAD ~ participating peers }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD