Leading cryptocurrencies remained rangebound on Monday as investors braced for a week in which defunct exchange Mt.Gox will begin unloading a massive amount of coins onto the market. What Happened: Bitcoin made a sharp move past $63,000, its highest in a week. However, bulls faced strong resistance soon after, causing the price to bend to $62,000s. Ethereum also failed to sustain its gains made early in the morning, retreating to the $3,400 region. About $99.83 million locked in futures positions was wiped out in the last 24 hours, with an almost equal number of bullish and bearish bets gettin…