Ben Schultzer developed Indian Rupee (INR) fiat currency support for the BitGoJS library, enabling seamless handling of INR transactions on both mainnet and testnet. He implemented new constructors and comprehensive unit tests to ensure robust integration and reliability across different network environments. Working primarily with TypeScript and leveraging his full stack development skills, Ben focused on expanding test coverage for all INR-related flows, addressing potential edge cases and validating correctness. Although the work was limited to a single feature over one month, the depth of implementation and attention to testing contributed to a stable and maintainable codebase for BitGoJS.