A Rut Verificador is an essential element of the Chilean tax identification system. It refers to the Rol Único Tributario (RUT), which is a unique identification number assigned to individuals and entities for tax and legal purposes. The term "Rut Verificador" specifically refers to the last digit of this number, known as the "verifier digit." This digit is calculated using an algorithm that ensures the validity of the entire RUT number, acting as a checksum to verify the authenticity of the ID. The RUT system helps in various administrative processes such as tax filings, business registrations, and interactions with the government. It's a crucial part of Chile's financial and legal infrastructure, enabling accurate tracking and identification of entities and individuals in official records.