Consumer Financial Protection Bureau. LibertyX lets you buy bitcoin with cash at a number of retail stores across the United States. From Wikipedia, the free encyclopedia. A P2P trade usually works something like this:. Defenders of the machines cite the utility for people who have transaction limits on their bank accounts, and the convenience for conducting cryptocurrency transactions. Bitcoin Cash Bitcoin Gold. Yes, using LocalBitcoins you can even exchange that Starbucks gift card from Christmas a few years ago for bitcoins ;.