How many people are running this at the moment? I'm currently syncing (from back in 2015) but connected to a single peer only.

The starting height of the peer is much higher than the block explorer's current block, which would normally suggest a fork, but the explorer seems to be stuck in 2016: http://explorer.graincoin.net/

edit: I can see the same peer listed back in May 2015 when it seems I last ran the client. They connected to me today (rather than me finding them), which I guess means their client has been trying to connect to my IP for over 2 years. Persistence really does pay off...