{HEAD ~ The control system} is adapted to receive remote ledger information from the remote communications unit relating to the independent ledger, compare {TAIL ~ corresponding information} on the shadow ledger with the remote ledger information, and update the shadow ledger if the information is different from the information of the independent ledger 
is adapted to compare
{ HEAD ~ The control system } is adapted to receive remote ledger information from the remote communications unit relating to the independent ledger , compare { TAIL ~ corresponding information } on the shadow ledger with the remote ledger information , and update the shadow ledger if the information is different from the information of the independent ledger
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL 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