Mike Caldwell – Physical Bitcoins

Mike Caldwell is the creator of Casascius Bitcoins, the first and most widely-known series of physical stored-value coins that hold real Bitcoins inside.  He also has free software that can be used to create a 2-factor Bitcoin key (This is where 2 keys are needed to unlock the bitcoins from it’s wallet).

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2012-04-12 BBC News
https://www.bbc.com/future/story/20130412-bitcoin-and-the-illusion-of-money
2011-06-16 BusinessWeek
https://www.businessweek.com/magazine/content/11_26/b4234041554873.htm
2013-03-18 Wired
https://www.wired.com/wiredenterprise/2013/03/bitcoin-ring/
May 16th, 2013 | Category: Newsmakers

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