The aim of this workshop is to discuss the topic of community building around CoreTrustSeal. The targeted audience is therefore anyone interested in this topic, regardless of background or organisation type. Building a community around shared topics of interest or importance can help foster exchange of knowledge, support, and resources. For repositories in shared contexts (e.g., institutional, or specific to a particular domain), building a community around CoreTrustSeal can give insight into shared bottlenecks or struggles, foster the exchange of solutions or resources, and create the space for collective reflection on the topic of transparency in general. Ultimately, this can lower the burden of the certification process and thus potentially increase the number of repositories that are certified or working towards increased trustworthiness. Uniting repositories into networks like this with shared community practices and standards is also a step towards the general desire of stronger international collaboration and networking of Trustworthy Digital Repositories.This record contains the presentation slides of the workshop, as well as questions to consider when developing a community of your own.