[oscargrouch]

I've have a answer to this same thread specifying something i'm working on, so in case you are curious, you can have more info by reading the details i gave in the other answer, and the way to solve this problem is through indirection.

You don't expose your data layer directly to the consumer, you expose an api that will resolve to one, two or several databases from one or many peers. The indirection allow you to define your rules and use your data layer in a way that fits your application goals in the best way possible.

So whats is immutable is your application, api and initial data, which you can mutate at later stages through other torrents or by consuming other api's from other peers and mutating your initial database state.

The problem is, the current browser is not meant for this, Javascript is not meant for bigger and complex applications (of course you can do it, but..)