Data pods, for example based on the emerging Solid technology, securely store personal data and allow n-to-m data sharing between individuals and apps/third parties. However, there are still quite some research challenges remaining. These relate to which data are shared and with whom they are shared, but also to the validity of the data that are shared. The SHARCS project aims to solve a number of these challenges for the case of secure and selective sharing of accredited personal data.