The Rut Verificador is a tool used in Chile to validate the authenticity of a RUT (Rol Único Tributario), which is the unique identification number assigned to individuals and companies in the country. Every RUT is composed of a series of digits followed by a verification digit, also known as the "dígito verificador." This last digit is calculated using a mathematical algorithm that helps prevent errors or fraud when entering or using the RUT. By using a Rut Verificador, people can check if a given RUT is valid before carrying out legal, financial, or commercial transactions, ensuring greater security and reliability in official processes.