According to CoinMeta, hashkey and exchange announced that their financial management channel has officially launched three digital funds of US Treasury bonds under wisdomtree. These funds are a short-term Treasury bond fund wtsyx, a 3 to 7-year Treasury bond fund wttsx, and a 7 to 10-year Treasury bond fund wtstx, covering fixed-income assets in US dollars with different maturities. All three products are registered open-end funds in the United States. They use blockchain technology to record digital fund shares and adopt a passive index strategy to track the corresponding US Treasury bond indices. They are only available to qualified professional investors.