However, in recent years, the examination of old documents has revealed that the hanpo (domainal law) in the land of the Kofu domain of Kai Province, codified during the Genroku era, spread to cover various provinces through the publishing of books, while the belief that the hanpo had been regarded as "Bakuho (Shogunate law) during the Keian era" was a Kansei era addition.
しかし、近年では古写本の検討により元禄年間に成文化された甲斐国甲府藩領の藩法が刊本により諸国へ流布し、寛政年間に慶安年間の幕法であるとする伝承が付加されたことが指摘されている。