09/09/2013
https://www.congress.gov...
"The FTC has now said that cryptocurrency scams have skyrocketed."
"This is a bipartisan hearing--in fact, it was Ranking Member Kennedy's suggestion to hold it."
"If, for example, Bitcoin--just one of the cryptocurrencies--were a country, it would already be the 33rd largest energy user in the world."
"Many cryptocurrencies are created through 'proof-of-work' mining that involves using computers to solve useless mathematical puzzles."