The document summarizes the history and purpose of Arkstore, a semantic data storage project. It began in 2011 as a university project in Russia and was commercialized in 2012-2013 as Coldsnipe company. In 2013 it became the ARKSTORE project focused on semantic web storage. Arkstore provides persistent storage of knowledge through mechanisms like backups and high availability. It uses various storage systems and has layers including an API, web interface, Ark semantic web engine, and Ark DataStore which aggregates storage systems. It supports various ontologies and public datasets to store and retrieve semantic data.