[rkeene2]

This is one reason I created hashcache [0][1], for referencing remote immutable resources that can be addressed by their cryptographic hash. I used this in my Linux distribution to download source tarballs for every package by their SHA2-256.

[0] https://chiselapp.com/user/rkeene/repository/hashcache/ [1] http://hashcache.rkeene.org/