Blacksmith, a startup that runs the infrastructure companies use to test code before it ships, has been valued at $1 billion following a new $66 million funding round led by Sequoia Capital. The round, which is Blacksmith’s Series C, comes about two months after the company raised a $45 million Series B led by Peak XV Partners at a $550 million valuation. It brings Blacksmith’s total funding to about $124.5 million. Blacksmith says more than 10,000 companies now use its platform, up from about 5...