Also worth noting, you sometimes come into an existing system that has no hashing, or weak hashing (md5) and nothing with versioning to begin with... if you est

Also worth noting, you sometimes come into an existing system that has no hashing, or weak hashing (md5) and nothing with versioning to begin with... if you establish your own prefix v#. you can check for it against existing entries, then add your versioning prefix... even if you move to something that already embeds its' details.