The Siberian Khanate in the 16th century is shrouded in a fog of legend and historical facts:
Chaos of dynastic genealogy: According to Cossack historical records, their ruling family originated from the Shiban Tatars after the split of the Golden Horde, and experienced the succession of monarchs such as Ibak, Magmet, and Qazi. However, different documents have conflicting records on the "legitimacy of blood" of the "first khan".
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