Hello, Yariv! Thank You for great efforts to make this nice NAS distribution even better!
It would be brilliant to have an ability to check integrity of the installation media, even alpha and beta versions.
For me, it seems to be good to compare the images against sha256+ sums together with digital signatures. Many distributions go this way taking in account they use third-party download servers for media and wish to publish only short information of digital signatures and hash sums on their site servers with size restrictions.