if ( $claim and not $cgi->param("checked") ) {
    if( my $ci = $csr->claimed_identity($claim) ) {
        my $check_url = $ci->check_url(
            return_to  => $this_domain . "myscript.pl?claim=$claim;checked=1",
            trust_root => $this_domain,
        );

        $ses->param( nonce => $nonce ); # keep this for when they come back
        print $cgi->redirect( $check_url );
        exit 0;
    }

}