# Electronic Seals Electronic seals are applied by organizations rather than individuals and are used to ensure document origin, integrity, and authenticity. eSeals are commonly used for invoices, certificates, statements, and system-generated documents where a legal entity, not a natural person, is the signatory. Once applied, any alteration to the document invalidates the seal. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://support.emsigner.com/key-concepts/electronic-seals.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.