Bitcoins really are useful. But not in the way you think

When the banking system went into meltdown in 2008, an intriguing glimpse of an alternative future appeared. On 31 October, an unknown cryptographer who went by the name of Satoshi Nakamoto launched what he described as “a new electronic cash system that’s fully peer to peer, with no trusted third party”. The name he assigned to this new currency was bitcoin.
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