Dig gold network unlimited brush coins

The website has a logic error and can be used to brush up without limit. Details: I accidentally found this site and tested it. The result shows that there is a logic error, and you can brush gold without limit. The vulnerability occurs in the place where coins are exchanged for silver coins. You can see that the gold block balance is 11. Now, change the value in the red matrix to "-100" and redeem it. The following situations may occur. The exchange is successful. (Gold coins against silver coins:) although the silver coins have become negative. However, the gold coins have been added. Then go to the exchange center and you will be able to use gold coins to redeem items.Solution:Added anti-tampering verification!