In the process of borrowing money, it is really necessary to conduct manual audit. This audit is mainly to ensure the authenticity of the borrower's identity and the accuracy of the information, so as to comply with community norms and laws and exclude any illegal, false or infringing content. Manual review is a process of reviewing and verifying some information, documents or data by manual means, which can assist machine algorithms in content filtering, information screening, brand safety and harmful content identification. Vast adopts multiple encryption technologies and security mechanisms to ensure the safety of users' assets, supports multiple digital currency, and allows users to choose the currency for trading and storage more flexibly. At the same time, when the network is attacked, users' assets can also be effectively protected.