The Universal System Exploration Registry (or USER) is the directory of all known universal bodies from which SCART ascertains all of its planetary data. Since 2210, it has been updated every 10 years, with the 779th edition having been released on January 7, 10000. The software is sold as a disc, a plugin, and was formerly sold in print until 3760. In addition, a compendium is released every thousand years, which functions as a concise retelling of the past hundred additions. The first compendium was released on January 7, 3210, while the most recent compendium, the 7th Compendium of the Universal System Exploration Registry, was released in 9210.

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