Costa Rica's Digital Signature: What It Is and How to Use It in Your Practice

Costa Rica’s Digital Signature — commonly known as Gaudi, named after the Central Bank system — is one of the most robust electronic signature standards in Latin America. Unlike other e-signature solutions, it is backed directly by the Costa Rican State’s public key infrastructure (PKI) and carries full legal validity under Law 8454 on Certificates, Digital Signatures and Electronic Documents.

Yet many law firms still haven’t incorporated it into their daily workflows. In this article, we explain what it is, how it works, and how you can start using it in your legal practice today.

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What is Costa Rica’s Digital Signature?

The Costa Rican Digital Signature is an authentication and signing mechanism based on public-key cryptography. Each holder has a key pair (public and private), stored on a smart card issued by an authorized Certification Authority (Central Bank, Ministry of Science and Technology, Bar Association, among others).

When you sign a document with your Digital Signature:

1. The system generates a cryptographic hash of the document.
2. That hash is encrypted with your private key (which never leaves your card).
3. The recipient verifies the signature using your public key.
4. If the document was altered after signing, verification fails automatically.

This guarantees two things:

• Authenticity: the signer is who they claim to be.
• Integrity: the document was not modified after signing.

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Legal Validity: What Law 8454 Says

Law 8454 equates the Digital Signature to a handwritten signature for legal purposes in Costa Rica. This means:

• A digitally signed contract is legally binding.
• Documents with a Digital Signature have evidentiary value in judicial and notarial proceedings.
• Both public and private entities must accept them as the equivalent of a physical document.

This is especially relevant for attorneys: lawsuits, powers of attorney, lease contracts, deeds, and any document requiring client signature can be processed entirely digitally.

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How to Obtain Your Digital Signature

1. Choose an authorized Certification Authority: SINPE, MICITT, Bar Association, among others.
2. Present your ID and complete the in-person identity verification process.
3. Receive your card and activate your credentials.
4. Install the USB reader and required software on your computer.
5. Test your signature at the official portal firmadigital.go.cr.

The annual cost varies by certification authority, but generally ranges between ₡15,000 and ₡25,000 (~$30–$50 USD).

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How to Use It in OKLegal

Once your card is active, in OKLegal you can:

1. Draft the document in the document builder.
2. Insert signature fields for each signer.
3. Send for signature: each signer receives a secure link.
4. The client signs from their device (via Digital Signature if they have one, or via OKLegal native, DocuSign, or OpenSign).
5. The signed document is archived in the case file with its audit certificate.

For documents you must sign yourself as the attorney, the Gaudi integration lets you sign directly from OKLegal with your card connected.

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Digital Signature vs. Other E-Signature Methods

Criterion	Digital Signature CR (Gaudi)	Simple E-Signature
Legal backing	Law 8454, state PKI	Varies by provider
Identity link	Verified CR national ID	Email or name
Hardware required	Yes (card + reader)	No
Validity in court	Full	Requires additional evidence
Annual cost	₡20,000 ($40 USD)	Usually free or low cost

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Costa Rica’s Digital Signature is one of the most powerful tools a Costa Rican attorney has to modernize their practice. OKLegal integrates it natively so you can take advantage of it without technical friction.

Want to see it in action? Request a demo or start your free trial.