"Significant skewness in ownership" of bitcoin suggests future wealth will fall "disproportionately to a small set of participants," researchers said.
Those top players represent a mere 0.01% of all bitcoin holders and yet they control 27% of the digital currency, the Wall Street Journal reported. That compares to the old-fashion dollar, where the top 1% controlled 30% of total U.S. household wealth, according to Federal Reserve data.