In Japan’s Edo period, rice wasn’t just food—it was currency. Social status and wealth were measured in koku, a unit based on how much rice you could produce or possess. Samurai were paid in rice. A daimyo with one million koku was considered incredibly powerful. This historical relationship between rice and value sparked a bold idea in the minds of Yabe-san and Nagahashi san: What if rice could become currency again—this time, powered by blockchain? Their answer: Kokudaka Project, a local ec...