The Dominion of Leviathan

Lord Ajax! First and greatest Ascendant; conqueror of the Martian machine-minds; mighty Steward of Leviathan's Dominion! For a thousand years, Ajax has ruled the solar system's worlds and moons with an iron fist. But history catches up with everyone—even an immortal tyrant. On the frozen dwarf planet Ceres, a scribe composes a record of his millennium-long rule. Unbeknownst to Ajax, her account contains a coded message that will spark a revolution.