During the project, we faced challenges integrating Next.js with Okto blockchain. The main issue was ensuring proper communication between the frontend and the Okto blockchain network, especially when handling transactions and state changes in real-time. We encountered difficulties in syncing the blockchain data with the frontend, leading to delays and inconsistencies. To resolve this, we optimized the interaction by using Okto's SDK and leveraging WebSocket connections for real-time updates. Additionally, we tackled issues related to handling asynchronous API calls and integrating Okto’s authentication system with Next.js, ensuring secure user interactions. By refining the blockchain integration and optimizing the data flow, we achieved seamless interaction between the Next.js frontend and Okto blockchain.