Nothing lasts forever. At some point Earth will perish. If humans get smart enough to flee before that happens, they may get with themselves the knowledge, the data, whatever... or not. However, even the universe doesn't last forever.

Will Bitcoin last as long as Earth? Maybe, but if it does it will change a lot from what it's now. Just imagine that internet and communication is very young and may also change.
Crypto currencies lasting as long as Earth? Possibly. I would also not rule out that someday a more evolved successor of Bitcoin will emerge and take over the lead.

In the grand scheme of things, we're not much different than the ants. So asking questions about "forever" are pointless.