In the wake of Coinbase’s direct listing earlier this year, other crypto companies may be looking to go public sooner than later. That appears to be the case with Circle, a Boston-based technology company that provides API-delivered financial services and a stablecoin. The Exchange explores startups, markets and money. Read it every morning on Extra Crunch or get The Exchange newsletter every Saturday. Circle will not direct list or pursue a traditional IPO. Instead, the company is combining with Concord Acquisition Corp., a SPAC, or blank-check company. The transaction values…