This report is the first deliverable of Task 8.2 “Trust & Quality Assurance” within WP8 of the SSHOC project. The distributed character of data infrastructures within the SSHOC communities requires developing an agreed approach to assessing the trustworthiness and quality of data repositories. This deliverable provides an overview of Trusted Digital Repository (TDR) standards offering a certification framework for communities represented in the SSHOC project (CESSDA, CLARIN, DARIAH, E-RIHS). Moreover, the deliverable lays the ground for the SSHOC trust work that is needed in order to facilitate the adoption of TDR standards and the FAIR principles in SSH data repositories across the board. In this report, ‘trust’ refers to the landscape of issues, standards and processes related to trustworthy digital repositories. Trust between all parties in the quality of data and services is critical for research infrastructure in terms of people, processes and technologies. The level of trustworthiness can be assessed through evaluation against agreed requirements.