A technical #ActivityPub question for a Sunday: is it possible/desirable to have every Actor on an instance share the same key pair?

I'm building something vaguely in the vein of FediMeteo, where all the accounts are automated and you'd generally follow one of those automated accounts to get the weather for your locality. Now, FediMeteo has a different key pair for each account, so the bot for Birmingham's weather has a different public key to Manchester.

But it's not a requirement that each account has a unique key, if the keys are only used for signature verification, right? Like, I don't think it'd be a security issue if "Weather for Birmingham" was signed with the key from "Weather for Manchester".

My question: is this another one of my Sunday Bad Ideas, and I should really have a key pair per account instead of trying to have the whole instance share?

Ok, I'm unofficially looking for work. I haven't _yet_ had the axe fall, but when the whole company is all-in on LLMs, the VP Eng expresses frustration at low velocity over the last month, and the team lead quotes Fable output stating it could do the work in an afternoon...

I should start mapping out the exits for this place. Fifteen years next month, and it could well end quite ignominiously.

Based in Manchester, UK; available to work worldwide (wherever local regulations allow contracting to a consulting limited company); full-remote would be a stipulation, but open to annual meetups etc.

And no LLM usage would be the other stipulation.

If there's work out there in renewable energy or permacomputing, I'd be especially open thereto.

#FediHire #GetFediHired

It's #WorldBicycleDay and a good time to mention this graph from Scientific American, first published in 1973, and updated 2025.

A person on a bike is the world's most energy-efficient mode of transport, and it's not even close. Salmon use three times as many joules/g/km to get around, and then it's jet aircraft at 5x.

#BikeTooter #Climate