Ok, I see distcc helping people with computer labs and server farms, but I thought mysterydip wanted to help the Gentoo community and other such. I.e. peer-to-peer build sharing.

So what kind of cryptographic guarantees would you need for that? And if you can only verify the build results by trusting signatures from upon high, then what is the point? Perhaps those builds could be turned into work in a proof-of-work blockchain. Do compilers contain any hard-to-do, but easy to verify steps?

Whole shelves full of useless PhDs thesis are just waiting to be written on this topic.