By Olga Kharif & Matthew Leising| Updated June 2, 2017
When bitcoin broke into public consciousness in 2013, it couldn’t have been sexier: a digital currency being used to buy everything from drugs to cupcakes. Now there’s a new wave of excitement about an aspect of bitcoin that is a bit less sexy: public online ledgers. Blockchain — the technology used for verifying and recording transactions that’s at the heart of bitcoin — is seen as having the potential to reshape the global financial system and
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