An alternative to the md5sum pipe is to use Digest::MD5 and keep it all perl:

use Digest::MD5;
foreach my $record(@records){
  chomp($record);
  my @arty = split('::',$record);
  open MD5, '<', $arty[1];
  binmode MD5;
  my $act = Digest::MD5->new->addfile(*MD5)->hexdigest;
  printf "%s... %s \n", $arty[1], ($act eq $arty[0] ? "ok" : "not ok")
+;
  close MD5;
}
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