Since the creation of bitcoin in 2009, cryptocurrencies have exploded in popularity and are today collectively worth more than $1 trillion.Critics say a lack of oversight has contributed to volatility in the nascent industry, but regulators have begun to catch up.Meanwhile, many governments are seeking to capitalize on the technology that powers cryptocurrencies by investing in their own digital currencies.IntroductionIn just over a decade, cryptocurrencies have grown from digital novelties t...