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Re:What Is Cryptocurrency: Everything You Need to Know by __Joker on Monday November 14, 2016 @04:58PM (#12953743)
But how can you achieve consensus without a central authority?

Nobody did know until Satoshi emerged out of nowhere. In fact, nobody believed it was even possible.

Satoshi proved it was.

I assume there are other algorithms like paxos exists for distributed consensus. Also not sure if Satoshi proved consensus by proof of work.

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