The extant Kanchu-keizu is a manuscript created in the early Edo period, and the manuscript says that the original is "Tanba Kuninomiyatsuko Amabe Jikito-uji no Hongi" (Records of the Amabe family, an ancient local ruling family in Tanba Province), which was compiled in the Ninna era (885 to 889).
現存のものは江戸時代初期の写本であり、原本は仁和年中（885-89年）に編纂された『丹波国造海部直等氏之本記』であると伝える。