In order to provide a risk-reduced mechanism for issuing and administering a cryptocurrency, this asset-backed cryptocurrency issuance/management system (10) is configured from : a cryptocurrency issuance/management system (40); a terminal B (30) of a first expert who is connected to the cryptocurrency issuance/management system (40) via a connection and supports the lotting of real estate into a number of small lots on the basis of a cryptocurrency issuance request from a terminal A (20) of a real estate owner and the sale of the lotted real estate as provisional collaterals; and a terminal C (60) of a prospective purchaser desiring to purchase the small-lotted real estate. On the advice of a terminal B (50) of the first expert, the terminal A (20) of the real estate owner lots the owned real estate into multiple lots and sells these on the Internet as "purchasable rights (provisional collaterals)." The terminal C (60) of the prospective purchaser makes a purchase by paying in cash or cryptocurrency, the terminal B (30) of the first expert (30) obtains a brokerage fee in cryptocurrency, and the terminal A (20) of the real estate owner receives the balance in cash or cryptocurrency.