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Bitcoin firms at CES aim to make digital currency mainstream

Some do so by sidestepping complex aspects of the virtual currency such as private keys and block chains

Bitcoin is a software-based system introduced in 2009 and can be used to buy goods or services from any person or company accepting it as payment, but is not a real currency managed by a central bank.

Las Vegas

AMID the roiling sea of gadgetry at the Consumer Electronics Show (CES) was a contingent of bitcoin start-ups intent on bringing the controversial digital currency mainstream.

ChangeTip was among a dozen or so bitcoin companies out to grab a bit of the spotlight at CES,...

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