A sticker on the window of a local pub indicates the acceptance of Bitcoins for payment in Berlin, Germany. - 

All this week we're talking about the digital currency Bitcoin. We've learned about what Bitcoin actually is. We've also checked in with Coinbase, the company trying to become a kind of version of PayPal for bitcoin that connects customers to businesses. Today we hear from a business that has started to accept Bitcoin. Dr. Paul Abramson runs a private practice called My Doctor Medical Group in San Francisco. He says that he's actually treated patients for substance abuse who prefer to pay with the cryptocurrency.

Click the audio player above to learn more.

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