The KC Chain loan contract must be completed on the smart contract platform. Both the lender and the borrower need to register the platform account on the KC Chain and carry out the necessary authentication; the lending advertisements issued by both the lender and the borrower on the KC Chain are transparent and have strong personal privacy. The lenders and borrowers can issue loans or advance advertisements according to their own circumstances. The content includes information such as interest rate, loan term, maximum loan amount, and mortgage's digital asset name.