However, exchanges will let you buy any amount, and you can buy less than one bitcoin. Having said that, here are a few of my favorite bitcoin-accepting merchants that I think have bright futures ahead of them. So, really: It is no surprise that Bitcoin, a secure, global, and digital currency has claimed the interest of investors. Buy Bitcoin Worldwide, nor any of its owners, employees or agents, are licensed broker-dealers, investment advisors, or hold any relevant distinction or title with respect to investing.