The application for the Certificado de Nacionalizado can be completed at tramites.extranjeria.gob.cl, then click on "Iniciar".
Then CLICK HERE.
The box shown before will be displayed. To complete this procedure you must register first. If you have not registered yet, check the following FORM.
After registering, enter your email and password and click on "Ingresar".
You must select the procedure to be completed, in this case "Solicitud de Certificado de NO Nacionalizado".
Complete the following form (if you click on usuario registrado your information will appear automatically).
Attach the required documentation, scanned in PDF format (you must click on the green button that says "agregar" to attach more documentation). Then click on "Enviar Solicitud".
The box shown before will appear where you must confirm the submission by clicking on "Aceptar".
When you accept the request, you will automatically receive an email with the number and date of your request.
The response will be sent when the request is resolved. Specifically, the certificate or oficio in digital form via email, the documents will have an advanced electronic signature, in pdf format.