Bitcoin jumps nearly 70% for August to record high, offshoot 'bitcoin cash' falls to more than one-week low

Bitcoin rose more than 6.5 percent, to a record high of $4,703.42, up nearly 70 percent for the month, according to CoinDesk. Bitcoin edged off that high in afternoon trade, hovering around $4,603, still more than quadruple in value for the year and up about 60 percent for August.