Worked on the argotorg/sourcify repository to implement cross-chain contract creation transaction fetching by adding a new configuration property, fetchContractCreationTxUsing, to support an additional blockchain. This feature was developed by adapting and reusing an established configuration pattern from an existing chain, ensuring consistency and maintainability across supported chains. The approach focused on reducing onboarding friction for future chains and laying the groundwork for broader interoperability. Leveraged full stack development skills and TypeScript to integrate the new configuration seamlessly. The work addressed the need for scalable cross-chain support, enabling the system to fetch contract creation transactions on newly added chains.