Alex Coffin worked on the dotnet/dotnet repository, focusing on backend development with C# to improve Debian package integrity. During the month, Alex addressed a bug related to MD5 checksum generation by implementing a normalization process that ensures all MD5 digests for Debian packages are output as lowercase hexadecimal digits. This technical solution eliminated inconsistencies caused by case sensitivity, thereby strengthening integrity verification across various tools and environments. By refining the checksum validation process, Alex enhanced packaging reliability and improved CI/CD workflows. The work demonstrated a solid understanding of backend systems and packaging standards, though it was limited in scope to one targeted fix.