What is an eSeal?
An eSeal (electronic seal) is the digital equivalent of a traditional company stamp, used to ensure the integrity and origin of electronic documents and data. It is applied by a legal entity, not a natural person, and serves to confirm that the content has not been altered since it was sealed. In the EU, eSeals are defined and regulated under the eIDAS Regulation, making them legally recognized and interoperable across member states.
How do eSeals work?
An eSeal is created using cryptographic technology and linked to a qualified certificate issued by a qualified trust service provider (QTSP). Just like a signature confirms a person’s approval, an eSeal confirms that a company or institution issued the document, and that the content remains unchanged. Unlike electronic signatures, which are applied by individuals, eSeals are used exclusively by legal entities such as companies, institutions, or public administrations.
eSeals are particularly important for ensuring data integrity, legal validity, and trust in automated processes. They are widely used in e-invoicing, issuing official certificates, publishing reports, and sealing automated system communications. By protecting documents against tampering and validating their origin, eSeals play a crucial role in digital trust frameworks, ensuring regulatory compliance with eIDAS, GDPR, and sector-specific requirements under AML5 or public procurement directives.
Key characteristics
- Defined and governed by the eIDAS Regulation (EU No 910/2014)
- Applied by a legal entity, not an individual
- Ensure the authenticity, origin, and integrity of a document or dataset
- Can be qualified or advanced, depending on the level of assurance
- Issued and managed by a qualified trust service provider (QTSP)
- Can be applied automatically in system-to-system communications
- Supports compliance with GDPR, AML5, and sector-dependent legal obligations
Examples
- A government agency issues a birth certificate digitally sealed with an eSeal to prove authenticity
- A university sends digital transcripts sealed with an eSeal to ensure recipients cannot alter the documents
- A company applies an eSeal to every e-invoice it sends, ensuring both compliance and fraud prevention
- A health insurer seals all policy documents generated from its platform to prove document integrity
- An eProcurement platform seals tender submissions with an automated eSeal to ensure non-repudiation and transparency
Related terms
- Qualified trust service provider (QTSP)
- Qualified electronic signature (QES)
- eTimestamp
- eIDAS
- Electronic signature
References