There are options for persistent connections, with logs and detachment, etc. ZNC/PsyBNC/Quassel come to mind. ZNC, in particular, is extendable via Perl or Python (or TCL if you're a masochist). I hear good things about Quassel as well, but it's still early in development.
I get Android notifications if I'm detached from irssi in tmux and someone PMs, says my handle, or any number of custom triggers I set. All free & open source (other than the android phone).
Now I'm no crypto-currency expert, but from the outside looking in it seems like: In theory Bitcoin is worth $10k each or whatever it is now, but in actuality it's only worth whatever arbitrary limits the various 'exchanges' set on real-money withdraws? So how is this "decentralized"? There's still a semi-central location you have to go to in order to get any real, actual currency out of it.
I get Android notifications if I'm detached from irssi in tmux and someone PMs, says my handle, or any number of custom triggers I set. All free & open source (other than the android phone).