Check is a Mexican RegTech platform that provides instant access to fiscal and government data through its digital consultation system. Operating under the brand Check ID, the company offers real-time verification services for critical Mexican identification and tax information, including CURP (Unique Population Registry Code), RFC (Federal Taxpayers Registry), business names (Razón Social), postal codes, Social Security numbers, weeks contributed to social security, and SAT Article 69 and 69B blacklists. The platform validates data directly against official government databases including SAT (Servicio de Administración Tributaria), Mexico's tax authority. Check targets accountants, attorneys, human resources professionals, and businesses that require rapid verification of employee, client, or supplier credentials without navigating complex government portals or waiting at bureaucratic offices. The service helps organizations maintain updated employee files, verify whether clients or suppliers appear on tax blacklists, generate accurate payroll and invoices, and avoid time-consuming validations with government agencies. Check operates on a subscription-based model with limited free trial consultations, after which users must acquire a license to continue accessing the platform. The company positions itself as Mexico's most powerful and comprehensive fiscal data consultation platform, addressing a critical compliance need in a country where RFC and CURP verification is essential for virtually all business transactions, from opening bank accounts to issuing electronic invoices (Facturas). By automating access to publicly available government data, Check enables faster onboarding, enhanced due diligence, and streamlined compliance processes for financial institutions, fintechs, and businesses operating in Mexico's increasingly regulated digital economy.