Worked on the bitcoin/bitcoin repository to address a critical issue affecting BaseIndex synchronization integrity. Focused on C++ development and debugging, the work involved removing a faulty assertion in the BaseIndex::Commit() method that incorrectly required current_tip to match m_best_block_index during synchronization. By allowing m_best_block_index to update independently, the fix preserved correct indexing state and reduced the risk of data corruption during concurrent updates. This targeted bug fix improved node reliability and ensured consistent indexing behavior. The approach demonstrated careful analysis of synchronization logic and a precise application of software development skills to maintain the robustness of the indexing subsystem.