prBAS CEN/TS 18170:2026

This NWI Will be a TS and will specify additional requirements for qualified or not qualified trust services implementing electronic archiving service with specific regard to : • Functional requirements to use for receipt, storage, retrieval and deletion to ensure that the electronic data and electronic documents (electronically-born documents and paper documents that have been scanned and digitized) are preserved in such a way that they are accessible and durably safeguarded against loss and unauthorized alteration or disposal, except for authorized changes concerning their electronic format. • Procedures and technologies ensuring the accuracy of the origin, the durability and legibility, integrity of the electronic data and electronic documents beyond the technological validity period and at least throughout the legal or contractual preservation period, while maintaining their integrity and their origin. • Procedures and technologies to use to allow authorised relying parties to receive a report in an automated manner that confirms that an electronic data and electronic documents retrieved from a qualified electronic archive enjoys the presumption of integrity of the data and electronic documents from the beginning of the preservation period to the moment of retrieval. • Procedures and technologies to prevent unauthorized access and improper use of the confidential and restricted data and electronic documents. • Interactions between electronic archiving trust services and other trust services. • Procedures and technologies to reach and obtain a green sustainability approach when possible.