This 40-character string is a SHA-1 hash . These are commonly used by version control systems (like GitHub ) or content-delivery networks to uniquely identify a specific version of a file or data set.
You can use ExifTool or the FileInfo Class to check when and how the file was created. 029314a66a124a55b616357dd2e7de5516546023.7z
Internal data blocks used by software like Git or Docker to store historical changes. This 40-character string is a SHA-1 hash
Automated cloud backup services often rename files to hashes before uploading for security and organization. How to Identify the Actual Content If you have this file and need to know what is inside: Internal data blocks used by software like Git
Using a Hex Editor , you can look at the first few bytes of the file. If it starts with 7z , it is a valid archive; the subsequent bytes might reveal the original filenames or software that created it.