https://blog.wongcw.com/2020/08/07/%e5%9b%9b%e5%a4%a7%e8%a1%8c%e5%85%a7%e6%b8%ac%e6%95%b8%e5%ad%97%e8%b2%a8%e5%b9%a3%e5%93%aa%e4%ba%9b%e5%a0%b4%e6%99%af%e6%9c%89%e6%9c%9b%e8%b5%b7%e9%a3%9b/
四大行內測數字貨幣哪些場景有望“起飛”