The records concerning register and supplementary provisions of the Kotofu are stored by the department of Imperial Household Archives (the old Article 10, Imperial Household Agency Act Article 2, Item 11, Imperial Household Agency Organizational Order Article 8, Item 1, and Article 20, Item 1), and the duplicate copy is retained by Ministry of Justice (the existing Article 2).
皇統譜の登録及び附記に関する記録は、宮内庁書陵部において尚蔵し（旧10条、宮内庁法2条11号、宮内庁組織令8条1号、20条1号）、副本は法務省で保管する（現2条）。