key distribution/verification/update mechanisms other than keyservers [was: Re: a step in the right direction]

[Andrew Gallagher]

> On 16 Jan 2018, at 22:26, Leo Gaspard <gnupg at leo.gaspard.ninja> wrote:
> 
> It could also help limit the impact of the nightmare scenario RJH has
> described, by making sure all the data is “cryptographically valid and
> matching”, thus making it harder to just propagate arbitrary data down
> the network.

It would make it *very* slightly more computationally expensive to pull off, but would not limit the impact one bit. 

A