Bitcoin has resumed its ascent, trading above the $78,000 level and extending its April rally, supported in part by notable inflows into U.S. spot BTC exchange-traded funds. According to CoinGlass data, BTC climbed higher as April delivered an 11.87% gain, a move that was underpinned by SoSoValue data showing about $1.97 billion in spot BTC ETF inflows for the month. Despite the move, market skeptics point to a potential test around the $80,000 mark, a level that many traders say must flip into support to confirm that bulls are in control. CryptoQuant, meanwhile, cautions that the April rebound appears to have been driven largely by futures traders, with spot demand softer, suggesting the marginal buyer may have been speculative rather…