In this project, we faced some challenges of integrating the smart contracts in the front-end and the back-end, which were the parts responsible for the user interaction with our credit system. Our project has many features. Therefore, we had to select which ones would be priority for this first version of the project, which had a limited deadline. To overcome these challenges, we sought help and connected with mentors who had experience in the area of blockchain and finance. We talked to Bruno Moniz. He helped us redesign the process that we would do within Hyperledger Besu, using the smart contracts to automate the credit operations and ensure the security and transparency of the transactions.