The Sci-Fi anime Cowboy Bebop had a digital currency unit called "Woolong".
damn I guess that's a near guess but they didn't guess the name. Do that woolong thingy use blockchain too if it is then their prediction came nearer than what I think it is.
well not that near,woolong have physical
The Woolong (symbol: ₩) is the standard unit of currency in the Cowboy Bebop universe. Woolongs are rarely traded in physical form such as in banknotes and coins; it seems that the 2071 economy is based on digital cash.
no specific details about how the system work but it's digital cash