Courtesy summary — the Spanish version below is the original and the one that governs.
TrazoFirma lets you apply a simple electronic signature to your own documents, and generates electronic evidence and traceability of that process — a self-issued seal (code, QR, server date and time), a cryptographic signature on the PDF, and a hash-chained evidence trail — not an ONAC-accredited digital signature or timestamp. You declare your own name and ID number; TrazoFirma does not verify your identity. You get 3 free signatures every calendar month; beyond that, non-expiring packages and an auto-renewing monthly subscription (billed and cancelled through Google Play) are available. You are responsible for the accuracy of what you declare and for the content of the documents you sign. The service is provided "as is," may have interruptions, and is governed by Colombian law.