For example, {TAIL ~ a hash} of {HEAD ~ an identity} may be checked for in a whitelist instead of an identity 
For example , { TAIL ~ a hash } of { HEAD ~ an identity } may be checked for in a whitelist instead of an identity
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH