Do I need a digital certificate or Cl@ve to use Zertidox?

No — that is the whole point. Spanish e-government normally requires a digital certificate or a Cl@ve identity, which most citizens don't have. With Zertidox you fill in a plain web form and the platform files the request with the official body on your behalf.

Is Zertidox a law firm?

No. Zertidox is a software platform for document management and filing. It automates the paperwork around official documents; it is not a legal practice and does not replace professional advice.

Which documents can I get through Zertidox?

Birth, marriage and death certificates from the Spanish Civil Registry; property valuation and rental-price reports; rental and other everyday contracts; written legal reports; and, for companies, an EU AI Act / GDPR audit of how they use AI and automation.

Where does the data in the property reports come from?

From official sources only: the Catastro (Spain's national land registry) for the property's own data, and the Ministry's official rental-index database for rental prices. The source documents are embedded in the report as annexes, so every figure can be traced back.

AI SaaS

Zertidox

Official Spanish certificates and legal documents, filed and delivered online — no digital certificate or Cl@ve needed.

Freemium AI Automation

ZBy ZertidoxLaunched Sep 21, 2026 UTC0 comments

Visit ZertidoxShare

Compare

Overview

About Zertidox

Zertidox is a Spanish SaaS that automates the paperwork most citizens dread: requesting official certificates from the Civil Registry (birth, marriage, death) and producing legal and property documents online. The problem it solves: in Spain, almost every public-administration procedure asks for a digital certificate or a Cl@ve identity that most people don't have — plus an appointment they can't get. Zertidox removes that barrier. You fill in a plain web form, pay, and the platform files the request with the official body on your behalf and delivers the document to your inbox. What's inside: • An automation agent that files each Civil Registry request with the Ministry of Justice and tracks it end to end, so the user never has to touch a government portal. • Property reports built from live Catastro (the national land registry) data and the official rental-index database, with the source documents embedded as annexes — not scraped from listing sites. • AI-drafted documents (rental contracts, written legal reports, compliance audits) behind an anti-hallucination gate: every statute or case-law citation is checked against a curated, verbatim-verified database, and anything outside it is rejected before the document is generated. • For businesses: a free AI-readiness diagnostic and a full EU AI Act / GDPR audit report, where every score and figure is computed in code rather than written by the model. Stack: Next.js 15 (App Router), TypeScript, Prisma + Postgres, Stripe, Vercel, with a multi-provider LLM router. Zertidox® is a registered EU trademark (EUIPO 019358847). Available in Spain.

Zertidox screenshots

Screenshot 1 of 3

Zertidox features

Official civil-registry certificates (birth, marriage, death) filed on your behalf
No digital certificate, Cl@ve or appointment needed
Automation agent that files and tracks each request with the Ministry of Justice
Property valuation and rental-price reports from official Catastro and rental-index data
AI-drafted documents behind a citation-verification gate against a curated statute database
Free EU AI Act / GDPR readiness diagnostic for companies, scored in code
Public tracking page per request, with email updates

Zertidox pricing

Freemium

Zertidox offers a freemium pricing model. Check the website to compare free access with paid features.

Frequently asked questions about Zertidox

Do I need a digital certificate or Cl@ve to use Zertidox?: No — that is the whole point. Spanish e-government normally requires a digital certificate or a Cl@ve identity, which most citizens don't have. With Zertidox you fill in a plain web form and the platform files the request with the official body on your behalf.
Is Zertidox a law firm?: No. Zertidox is a software platform for document management and filing. It automates the paperwork around official documents; it is not a legal practice and does not replace professional advice.
Which documents can I get through Zertidox?: Birth, marriage and death certificates from the Spanish Civil Registry; property valuation and rental-price reports; rental and other everyday contracts; written legal reports; and, for companies, an EU AI Act / GDPR audit of how they use AI and automation.
Where does the data in the property reports come from?: From official sources only: the Catastro (Spain's national land registry) for the property's own data, and the Ministry's official rental-index database for rental prices. The source documents are embedded in the report as annexes, so every figure can be traced back.