Daniil contributed to the argotorg/sourcify repository by implementing cross-chain contract creation transaction fetching for a new blockchain configuration. He achieved this by introducing the fetchContractCreationTxUsing property, adapting it from an existing chain to ensure consistency and interoperability across supported chains. Working primarily with TypeScript and applying full stack development skills, Daniil’s approach emphasized code reuse and maintainability, reducing friction for onboarding additional chains in the future. The work focused on expanding the platform’s cross-chain capabilities, laying a foundation for broader support while maintaining established configuration patterns. This contribution demonstrated thoughtful engineering within a concise, targeted feature scope.