Bitcoin Open Interest (OI) surged to a new all-time high as Bitcoin rallied to $75,000, and several analysts suggest there could be more upside ahead. Bitcoin (BTC) OI — a metric tracking the total number of unsettled Bitcoin derivative contracts such as options and futures — reached $45.41 billion, representing a 13.29% increase since Nov. 5, when Bitcoin’s price broke through its $73,800 all-time high set in March, according to CoinGlass data. OI increases when the number of new long positions opened by buyers or new short positions by sellers is more significant than the number of contracts…