A qualified timestamp proves that a document or data existed in a specific form at a precise point in time. Issued by AlfaTrust as a Qualified Trust Service Provider under eIDAS.
Qualified TSA
AlfaTrust operates a Qualified Time Stamping Authority (TSA) compliant with:
- eIDAS Regulation 910/2014, Article 42
- RFC 3161 — Internet X.509 PKI Time-Stamp Protocol
- ETSI EN 319 421 — Policy and security requirements for TSPs
- ETSI EN 319 422 — Time-stamping protocol and electronic time-stamp profiles
TSA features
- Single and bulk timestamping supported
- High-volume throughput for document archiving workflows
- Timestamp tokens compatible with all major PDF and signature validation libraries
Use cases
- Long-term archiving — PAdES-LTA, CAdES-A formats for legally valid archives over decades
- Signature validity extension — re-timestamp before certificate expiry to preserve signature validity
- Audit trails — prove when a document, log entry, or transaction was created
Integration
The TSA endpoint is also exposed via the CSC API (timestamps/request), making it directly available within any remote signing workflow.