Thanks - the short answer is that, for now, you may look up
g3gg0's signature (he's using this money to pay for hosting).
Long answer: to accept money as a group, we would need some kind of organization (such as a non-profit). Setting up one is non-trivial, i.e. too much of an overhead for a hobby project, given that we are all from different countries (mostly EU, but also US and AU). The bitcoins are just a workaround, and so is g3gg0's signature.
Back in April, I've considered a Patreon page, but since then I've changed my mind. There are many reasons against opening one, some discussed in the linked thread, others not (can't really articulate why; it just feels wrong).
I am, however, exploring the idea of fiscal hosting (for the entire team, not just for individual developers).
Sorry for the delayed reply, I'm currently
taking a break from development. I'm still watching the forum for emergencies (i.e. bricked cameras), but most of the other topics have low priority for me (for now).