Your media is important. It takes work, effort, and time to capture the right content. So why take chances when copying your media? The data on the card can become corrupt during the copy. Look for software that will create and verify checksums of your media during the copy. Some examples are YoYattaID, Silverstack, ShotPut Pro, and Hedge (our personal favorite).
Keenan J. Mock is a Senior Media Archivist at Light Iron in Hollywood. He has made archives for over 200 feature film and television projects. Keenan discusses Hero Checksums, MD5 vs xxHash, and how to battle entropy (data loss) when creating your media archive.