I suppose the nice bit of this (original) proposal is that it works without any kind of connection or storage. You could use something like a blockchain to stor

I suppose the nice bit of this (original) proposal is that it works without any kind of connection or storage. You could use something like a blockchain to store this kind of thing, but you're still reliant on that existing in the future. Nice idea tho. You can also use hashing if you're the origin server (the idea behind content addressable stuff), and if you go away the data goes away anyway so it doesn't matter...