I got the key from ebay, it doesn't let me post the link but I will post a picture from were I got it from.
It says for Camry but it will fit in your Corolla too, and what I did I Replaced the remote from the old Key and place it inside the new one, but the hard part is that you also need to remove the Sensor, if not the car will not start, once I did that you just Cut the key and Done.
You can search on youtube how to do the whole process. I will post a picture as well. Thanks
PS. I glue the Sensor just for secure safety.