Cryptocurrency and digital assets that are backed by currency (gold, silver, or fiat money) fall under the category of Currency (as-Sarf), and their zakat ruling is analogized to the zakat on currency.

Cryptocurrency and digital assets that are not backed (built purely on technology) fall under the category of Trade Goods (‘Urud Tijarah), and their zakat ruling is analogized to the zakat on trade goods (‘Urud Tijarah).