Investigate extending Vaultage with an (optional) blockchain

[kolovos]

If a Fairnet-like vault has a method likes(User user, Post post), that vault is the only one that keeps track of the number of times each of its post has been "liked". As such, when we need to find out how many users have liked a certain post, we need to ask the vault that owns it. A malevolent/buggy vault could report the wrong number of "likes" and currently, there's no way to verify this. We could look at adding a blockchain (or similar mechanism) to record such actions of interest in a distributed way so that users could verify such "claims" if needed.