Building a project as innovative and complex as Tracto inevitably comes with its share of challenges. From technical hurdles to conceptual obstacles, each challenge provided an opportunity for learning and improvement. Below are some of the specific challenges we encountered and the strategies we employed to overcome them:

1. The Challenge of Integrating Okto Wallet
   Integrating Okto Wallet into Tracto's infrastructure presented a unique set of challenges. The Okto SDK, being a relatively new and complex technology, initially posed difficulties in terms of compatibility and functionality within our existing system but we figured stuff out and integrated it

2. Cross-Chain Interoperability
   Challenge: Achieving seamless interoperability between different blockchain networks was a significant technical hurdle, given the distinct protocols and consensus mechanisms of each blockchain.

Solution: We tackled this by integrating a series of smart contracts and cross-chain communication protocols. We also conducted extensive testing on networks like Polygon Mumbai testnet, Linea, Mantle, Scroll, and Arbitrum to ensure compatibility and smooth operation across these varied platforms.

3. Accurate Gas Fee Estimation
   Challenge: Providing users with accurate gas fee estimates for transactions, especially in a fluctuating market, was complex. Incorrect estimations could lead to failed transactions or unnecessarily high fees.

Solution: To address this, we integrated the Metamask GAS API with enhanced algorithms that consider current network congestion and typical transaction times. This integration provided a more reliable estimation of the required gas fees.

4. User Interface and Experience
   Challenge: Designing a user interface that was both intuitive and feature-rich was challenging, especially considering the diverse user base with varying levels of blockchain expertise.

Solution: We focused on a design-first approach, prioritizing simplicity and clarity in our UI/UX design.