LinkedIn founder Reid Hoffman announced an unusual new investment late last month. He and other Silicon Valley luminaries, including Sun Microsystems founder Vinod Khosla, sunk $21 million into a company that may never have to make a profit to be successful.
That company is called Blockstream. Hoffman and others backed it in an effort to give a technological shot in the arm to Bitcoin, a digital currency built upon software that uses cryptographic transactions to prevent counterfeiting without the need for any central authority (see “What Bitcoin Is and Why it Matters”).
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