Digital Timestamps for
Legally Secure Proofs

Prove the existence and integrity of digital documents at a specific point in time.

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Understanding Digital Timestamps

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How Digital Timestamps Work

Digital timestamps create a unique hash value from your document and link it with a trustworthy proof of time according to the RFC 3161 standard. Your original document never leaves your secure environment—only the hash is transmitted. If the document is later modified, the hash value no longer matches, making any changes immediately recognizable. This standardized approach ensures compatibility with existing systems while maintaining the highest security standards. The process is fast, automated, and creates legally valid proof of existence and integrity. 

Swisscom System Integration Diagram with DMS ERP and Timestamp Services

Seamless Integration Into Existing Systems

Digital timestamps integrate seamlessly into your existing IT landscape through standardized RFC 3161 interfaces. Whether you use document management systems, ERP platforms, archive solutions, or signature workflows, our timestamp service connects directly with your infrastructure. The integration requires minimal technical effort and works with leading enterprise systems. You can automate timestamping within your existing processes without disrupting workflows. This enables you to add reliable time-tracking proof to contracts, invoices, records, and other critical documents as part of your standard operations.

Compliance Certification Symbols with eIDAS and ZertES Standards

Compliance and Regulatory Standards

Our digital timestamps meet the strict requirements of eIDAS regulation in the EU and ZertES in Switzerland, ensuring full legal compliance across jurisdictions. As a qualified trust service provider, Swisscom Trust Services delivers timestamps that create audit-proof documentation for regulatory requirements. The service supports retention obligations, archiving regulations, and compliance frameworks in financial services, healthcare, public administration, and other regulated industries. Digital timestamps provide the traceable, tamper-evident proof that auditors and regulators require, while simplifying your compliance processes through automated, standardized procedures.

Your Benefits at a Glance

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Proof of Existence and Integrity

Prove that a document existed at a specific point in time and has remained unchanged since then – for archiving, compliance, and audit-proof processes. 

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Easy Integration into Existing Systems

Seamlessly integrate digital timestamps into your existing DMS, ERP, or archive systems via a standardized RFC 3161 interface – secure and efficient.

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Compliant Digital Archiving

Create a reliable foundation for digital archiving and records management that meets regulatory requirements – traceable, secure and fully digital.

Compliant Digital Archiving
European Trust Service Portfolio

Digital timestamps are part of our comprehensive trust service portfolio, including digital identity, qualified signatures, seals, and integrity services for the EU and Switzerland. 

Frequently Asked Questions About Digital Timestamps

Digital timestamps are a critical component of legally compliant digital processes. Below are answers to the most common questions about how digital timestamps work, their integration into your systems, and their compliance with European and Swiss regulations.   

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How Does a Digital Timestamp Work?
A digital timestamp links a unique hash of your document to a trusted timestamp. The process is simple: your system generates a hash value of the document, sends it to our timestamping service, and receives back a cryptographically signed timestamp. The original document never leaves your secure environment. If the document is later modified, the hash value will no longer match the timestamp, making any alteration immediately detectable and ensuring the integrity of your digital records. 
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What Are the Benefits of Integration into ERP Systems?
Our digital timestamp service integrates seamlessly into existing IT infrastructures via a standardized RFC 3161 interface. This means you can connect our timestamping service directly to your document management systems, ERP platforms, archive solutions, or digital signature workflows. The integration requires minimal development effort and ensures that timestamping becomes an automated part of your document lifecycle. Your IT team maintains full control over document storage and access, while benefiting from trusted timestamp proofs. 
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Which Industries Benefit Most from Digital Timestamps?
Digital timestamps are particularly valuable for financial services, public administration, healthcare, and technology providers. Financial institutions benefit from traceable transaction documentation and compliance with regulatory requirements. Public sector organizations can ensure the integrity of digital records and administrative processes. Healthcare providers can secure sensitive patient documentation and research data. ERP providers and platform operators can extend their solutions with trustworthy proof-of-time capabilities that enhance the value of their digital workflows and meet customer compliance needs. 
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How Do Digital Timestamps Comply with eIDAS and ZertES?
Swisscom Trust Services provides qualified trust services that comply with both the eIDAS regulation in the EU and the ZertES in Switzerland. Our digital timestamps are part of a comprehensive trust service portfolio that includes qualified electronic signatures, electronic seals, and digital identity solutions. This ensures that your timestamped documents meet the highest legal and technical standards for cross-border recognition. Our infrastructure is audited regularly, and we maintain the certifications required to deliver legally compliant trust services across European jurisdictions. 

Explore Digital Timestamps

Digital Timestamps in Digital Archiving

Discover how digital timestamps create audit-proof foundations for long-term document retention, records management, and regulatory compliance across industries that require traceable digital storage solutions.

Compliance Requirements Under eIDAS and ZertES

Understand the regulatory framework for qualified timestamps in the EU and Switzerland, including technical standards, certification requirements, and legal validity for cross-border digital processes.

Use Cases in Healthcare and Finance

Explore practical applications of digital timestamps for patient documentation, clinical studies, financial transactions, contract management, and sensitive records requiring integrity proofs and traceability.

Integration Best Practices for SaaS Providers

Learn how to seamlessly integrate timestamp services into existing platforms using RFC 3161 standards, ensuring scalable implementation in DMS, ERP, and document management systems.

Secure the Integrity of Your Digital Documents

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