Hello @evan, sorry if i disturb you. Someone said to me the ActivityPub protocol is licensed under the MPL (Mozilla Public License), which lets developers use it even in closed source projects. I can't verify this assertion, but it's clear that it is licensed under a licence which lets developers use it even in closed source projects, as Meta - and maybe others - is doing it in their Threads software. My question is: which license is ActivityPub using? And: would it be possible, given its current license, to fork ActivityPub, name the fork something like "FreeActivityPub" and put it under a license, like the GPL, which prohibits its use in closed source projects?