Spain is a full participant in the EU eIDAS framework, where qualified certificates from the FNMT (Fábrica Nacional de Moneda y Timbre) are very widely used by citizens and businesses.
Notable qualified trust service providers
- FNMT (Fábrica Nacional de Moneda y Timbre)
- Camerfirma
This is not an exhaustive list — the authoritative, always-current set of qualified providers is Spain's national trusted list, indexed by the EU LOTL. Sealium validates against the live list, so new providers are recognised automatically.
How to validate Spain signatures
Send the document to the Sealium API and it resolves Spain's trusted list automatically, returning each signature's eIDAS level, signer, certificate chain, revocation status and timestamps as a structured report — no per-country configuration required.
Frequently asked questions
Is an electronic signature legally valid in Spain?
Yes. As an EU participant in the eIDAS framework, Spain recognises electronic signatures, and a qualified electronic signature (QES) has the same legal effect as a handwritten one. Spain's qualified providers are published on its national trusted list, which is indexed by the EU List of Trusted Lists.
Who publishes Spain's trusted list?
Spain's trusted list is published by its national supervisory authority and referenced by the EU List of Trusted Lists, so a validator can resolve and trust it automatically.
How do I validate a Spain electronic signature?
Check the signature against Spain's national trusted list (via the EU LOTL): verify integrity, build the certificate chain, check revocation and any timestamp, and read the eIDAS level. Sealium does all of this in one /v1/validate API call and returns a structured report.
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