26 May '15, 2pm

Someone tried to mine Bitcoin on a 1960s punchcard computer:

It long ago stopped being profitable (or even feasible) to mine Bitcoin on consumer-level hardware. So why not try it out on a computer primarily used by forward-thinking universities—an IBM mainframe that runs on assembly punchcards from the 1960s —to see whether or not it can compete with today's dedicated mining machines? Ken Shirriff, a computer engineer, blogger, and retro hardware enthusiast, decided to find out. It ended as you might expect . The Computer History Museum's mainframe was indeed able to solve Bitcoin hashes—a series of math problems that are used to verify other users' Bitcoin transactions—but it did so at impossibly slow rates. "While modern hardware can compute billions of hashes per second, the 1401 takes 80 seconds to compute a single hash," Shirriff wrote. "It would take more than the lifetime of the universe to successfully mine a block." It look...

Full article: http://motherboard.vice.com/read/someone-tried-to-mine-bi...

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