Comment: Bitcoin runs

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In reply to comment: I dont know much about bit coin (see in situ)

Bitcoin runs

as long as a single computer anywhere in the world can broadcast a copy of the blockchain (log of all transactions). This is also why nobody can completely kill Bitcoin without shutting down the entire Internet.

If the power goes out in someplace it wouldn't matter. When you fire up your computer and connect to the bitcoin network it looks for who has the longest valid blockchain. If all power in the U.S. went out it only means those bitcoin users are not adding transactions to the blockchain. Any of the other hundreds of countries of the world would still able to operate continuing to build the blockchain.

Also, in a collapse/power outage there are probably some people prepared with off-grid power and connection(s). And even if the entire Internet went down/power outage, bitcoin could start back up if anyone had backed up the latest copy of the blockchain to a USB stick, for example.