DASI is an ERC-Advanced Grant project aimed at digitizing the pre-Islamic inscriptions from Arabia and fostering best practices for the digitization of the epigraphic heritage related to Semitic languages. This paper describes the content model, the standards chosen, and exemplifies the vocabularies in view of a possible harmonization of data pertaining to the specific domain. The architecture of the system and the tools for encoding and retrieving textual content are also illustrated.