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Version 1.3.1 of QTC-CrossCheck provides an offline Windows solution for radio amateurs engaged in **CW QTC** traffic during the Worked All Europe DX Contest (WAEDC). This specialized tool decodes received QTC groups directly from local WAV audio recordings, offering a critical aid for post-contest log verification. It facilitates a detailed comparison of the decoded QTC time, callsign, and serial data against an optional, manually created UCXLog QTC file, streamlining the often-tedious process of cross-referencing contest exchanges. The software integrates audio playback controls, allowing operators to review specific QTC lines with their corresponding audio segments. This feature is particularly useful for resolving discrepancies or confirming marginal decodes, ensuring accuracy in contest submissions. The application operates entirely offline, requiring no internet connection or formal installation, making it highly portable and convenient for contest stations. Operators can download the Windows ZIP archive, extract its contents, and run the `QTC-CrossCheck.exe` executable. A SHA-256 hash is provided for integrity verification, ensuring the downloaded file matches the official release. The utility is designed to assist with the rigorous demands of WAEDC QTC management.