initiating at the rewards server {TAIL ~ a system game history ID} reflective of {HEAD ~ transactions} of the system game 
initiating at the rewards server { TAIL ~ a system game history ID } reflective of { HEAD ~ transactions } of the system game
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH