Today, there are several merchants online and offline that accept Bitcoin. You can order a flight or book a hotel with Bitcoin if you like. There are even Bitcoin debit cards that allow you to pay at almost any store with your Bitcoin balance. However, the road toward acceptance by the majority of the public is still a long one. Unauthorized spending is mitigated by bitcoin's implementation of public-private key cryptography. For example, when Alice sends a bitcoin to Bob, Bob becomes crypto com price the new owner of the bitcoin. Eve, observing the transaction, might want to spend the bitcoin Bob just received, but she cannot sign the transaction without the knowledge of Bob's private key. Bitcoin investors make money by buying or mining Bitcoin and then selling it for a profit. Bitcoin can be valuable. While its price has varied significantly, one Bitcoin can trade for tens of thousands of dollars.