Kiryl worked on the lifinance/contracts repository, delivering a feature that aligned the pioneer demo script with recent API changes. He implemented a crypto-random transaction ID generator in TypeScript, ensuring each transaction could be uniquely identified and processed reliably. The update also extended the demo query payload to include an external_id, supporting compatibility with the updated API and improving transaction tracking. Using Node.js and focusing on API integration, Kiryl’s work enhanced the demo script’s reliability and readiness for production-like testing. The scope was focused, with depth in API adaptation and transaction processing, but did not include bug fixes during this period.