def auth(self, id, otp):
        """
        Attempt to authenticate for a particular cosigner.
        :param id: the id of the cosigner
        :param otp: the one time password
        """
        payload = {'otp': otp}
        return self.send_request('post', 'cosigner/%s/auth' % quote(id), payload)

        Attempt to authenticate for a particular cosigner.
        :param id: the id of the cosigner
        :param otp: the one time password
        
electrum/plugins/trustedcoin/trustedcoin.py