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A computer screen displays a website featuring cryptocurrency token sales and ICO (Initial Coin Offering) lists in Berlin on November 26, 2017. Bypassing oversight of any kind, Initial Coin Offerings (ICOs) have sprung from nowhere to become a hugely popular way for start-ups to raise funds online, offering self-created digital 'tokens' or coins to any willing buyer. / AFP PHOTO / John MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)

A computer screen displays a website featuring cryptocurrency token sales and ICO (Initial Coin Offering) lists in Berlin on November 26, 2017.
Bypassing oversight of any kind, Initial Coin Offerings (ICOs) have sprung from nowhere to become a hugely popular way for start-ups to raise funds online, offering self-created digital 'tokens' or coins to any willing buyer. / AFP PHOTO / John MACDOUGALL        (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)