How to obtain trustworthy data is the solution that oracles need. To solve this problem, we need to make this data credible, we can imagine a process, for example, the boss wants to know what the employee's salary is, he will not ask the employee one by one, he will for example, find the salary of the financial department to give him the salary form of the employee last month, the salary form is reviewed by the personnel, finance, and business departments to give Xiao Zhang. In this process,I...

How to obtain trustworthy data is the solution that oracles need. To solve this problem, we need to make this data credible, we can imagine a process, for example, the boss wants to know what the employee's salary is, he will not ask the employee one by one, he will for example, find the salary of the financial department to give him the salary form of the employee last month, the salary form is reviewed by the personnel, finance, and business departments to give Xiao Zhang. In this process,I...