Spanish sole proprietor (autónomo) eligibility for Public Trust Organization/DBA identity validation

Skahe Smith 0 Reputation points
2026-09-02T14:34:11.6433333+00:00

I am an individual software developer resident in Spain, planning to use Azure Artifact Signing for a Windows desktop application. The documentation states that Public Trust individual developer validation is limited to the United States and Canada, while organizations in the European Union are supported. I need to clarify where a Spanish sole proprietor falls.

Specifically:

  1. Can a Spanish sole proprietor (empresario individual / autónomo), resident in Spain, pass Public Trust identity validation under the "Organization or DBA" category? The person would hold: a NIF tax identification number, Modelo 036 census registration with the Spanish tax agency, RETA self-employment registration with Social Security, an owned internet domain, and two mailboxes on that domain.
  2. Is registration in the Spanish Mercantile Registry, or incorporation as a limited company (Sociedad Limitada), strictly required?
  3. Is there any minimum age requirement for the entity or its tax history? Would a recently registered entity be rejected?
  4. Which exact Spanish documents are accepted as proof of legal existence and address for this category?

I would prefer to confirm eligibility before creating an Artifact Signing account, since billing starts on creation and is not prorated.

Thank you.

Artifact Signing
Artifact Signing

A fully managed end-to-end service for digitally signing code, documents, and applications. (formerly Trusted Signing)

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  1. SHOUMIK CHAKRAVARTY 575 Reputation points
    2026-09-04T00:52:22.07+00:00

    One thing first to check is your Azure billing account type. From the Quickstart prerequisites: This may help to answer all your four questions.

    "The billing account type must match the identity validation type: a billing account with an Account Type of 'Individual' can only be used for individual identity validation. You cannot use an individual billing account to validate an organization identity, or vice versa."

    Public identity validation pulls its details from the billing account on your subscription. If yours is set as Individual, the organization path isn't open to you whatever Spain's status is, and individual validation is US and Canada only. Worth confirming before billing starts rather than after.

    1. Can a Spanish autónomo pass under Organization or DBA?

    Geographically yes. The same page states: "Public Trust certificates are available to organizations in the United States, Canada, the European Union, the United Kingdom, Australia, New Zealand, Japan, South Korea, Singapore, Switzerland, Norway, and Israel. Individual developers must be located in the United States or Canada." So Spain is in scope for the organization path. Whether an autónomo satisfies "legal business entity" for that purpose isn't stated anywhere I can find, and I'd rather tell you that than guess.

    2. Is Mercantile Registry registration or an SL strictly required?

    Not documented. Nothing on the page names a registry. The form asks for the legal business entity and a Business Identifier without defining what qualifies as either.

    3. Minimum entity age or tax history?

    No entity age requirement is published. There is a rule about the documents themselves: "All documents submitted must be issued within the previous 12 months and where the expiration date is a future date that is at least two months away." That's about document recency rather than how long the entity has existed.

    4. Which exact Spanish documents are accepted?

    There's no per-country list. Supporting documents are described only generically, as business registration forms, business charters or articles of incorporation. Worth noting one specific mention though: domain registration or renewal invoices showing the entity and contact name are listed as acceptable evidence, so the domain you own is more useful here than it might appear.

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