How do electronic signatures satisfy audit and compliance requirements?

Electronic signatures deliver the two things auditors ask for: proof of who approved a document, and proof that it has not changed since. For frameworks such as NIS2, Regulation (EU) 2022/2554 on digital operational resilience in the financial sector (DORA) and ISO/IEC 27001, it is equally decisive that this evidence is logged completely.

It must also stay verifiable across the full retention period — that is, long after the original signing certificate has expired. This is exactly where a robust signing architecture separates itself from a simple click confirmation.

Here's what auditors actually want to see:

• Identity evidence: At what level of assurance were signatories verified, and how is that process documented?
• Authorisation evidence: Who was permitted to sign which document at which level, and how is that enforced technically?
• Integrity evidence: Is the signature long-term validatable with a qualified timestamp, so it holds across the retention period?
• Operational evidence: Which certifications, conformity reports and availability commitments exist for the trust service?
• Complete logging: Are dispatch, opening, signature and rejection each documented with a timestamp?
• Third-party risk management: For organisations in DORA scope: are availability, notification paths and exit scenarios contractually governed?

Practical safeguards in daily operation:

• Anchor the level in the template: The permitted signature level belongs in the document template, not in a work instruction — that makes compliance technically demonstrable.
• Reuse the provider's evidence: Qualified trust service providers are audited regularly by a conformity assessment body; those reports form part of your evidence chain.
• Check the exit scenario: Correctly produced PAdES documents with LTV stay verifiable without the provider — a point increasingly raised in audits.

primesign publishes evidence, root and CA certificates and revocation lists in the primesign Trust Center, guarantees 99.8% availability, and operates a publicly accessible status page showing maintenance windows. Premium support is available 24/7 on request — relevant for organisations within DORA scope.