Thirty-five-year-old software engineer Mike Caldwell mints physical versions of bitcoins at his shop in Sandy, Utah, cranking out homemade tokens with codes protected by tamper-proof holographic seals, a retro-futuristic kind of prepaid cash. The currency made its online debut only four years ago.
Thirty-five-year-old software engineer Mike Caldwell mints physical versions of bitcoins at his shop in Sandy, Utah, cranking out homemade tokens with codes protected by tamper-proof holographic seals, a retro-futuristic kind of prepaid cash. The currency made its online debut only four years ago. ASSOCIATED PRESS
Thirty-five-year-old software engineer Mike Caldwell mints physical versions of bitcoins at his shop in Sandy, Utah, cranking out homemade tokens with codes protected by tamper-proof holographic seals, a retro-futuristic kind of prepaid cash. The currency made its online debut only four years ago. ASSOCIATED PRESS

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May 17, 2013 6:55 PM

Online currency Bitcoin moving more mainstream

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