During April 2025, Bernd worked on the DFXswiss/api repository, focusing on stabilizing the payment request workflow for Bitcoin and Monero. He addressed a critical bug by correcting the formatting of payment request amounts and ensuring the payment link service used accurate transferAmounts data. Using TypeScript and applying backend and API development skills, Bernd resolved conflicting changes in formatting logic and transfer-amount handling through disciplined version control, including rollback and revert commits. His work improved data integrity and reduced user-facing errors, resulting in more reliable cross-currency payment requests. The depth of his contribution lay in precise, workflow-oriented problem solving.