Next, the client identifies a record and instructs {HEAD ~ the verification system} to retrieve {TAIL ~ the record} 
Next , the client identifies a record and instructs { HEAD ~ the verification system } to retrieve { TAIL ~ the record }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL