i use this,it might not be much help but,i use a text file to log the $md5's:

Code:
alias unmd5 {
if ($gettok($read(unmd5.txt,$1,s),1,32) != $null) {
  return $gettok($read(unmd5.txt,$1,s),1,32)
}
else {
return no matches found for $1
}
}
alias newmd5 {
  if ($read(unmd5.txt,$1,s) == $null) {
    /write unmd5.txt $1 - $md5($1)
    //echo -a new md5 added for $1
  }
  else {
    //echo -a $1 is already logged
  }
}

new username: tidy_trax