Kiryl worked on the lifinance/contracts repository, delivering an update to the pioneer demo script that aligned it with recent API changes. Using TypeScript and Node.js, Kiryl implemented a crypto-random transaction ID generator and extended the demo query payload to include an external_id, ensuring compatibility with the updated API for transaction processing. The work focused on robust API integration, enhancing the reliability of the demo script for production-like testing scenarios. Over the course of one month, Kiryl’s contribution addressed the need for accurate transaction identification and seamless API interaction, reflecting a focused and technically sound engineering effort.