BitGo, a crypto custody solutions provider, has raised $100 million in a Series C round from new investors in the US and Asia, valuing the company at $1.75 billion. The funds will be used to expand its crypto custody services and infrastructure solutions through organic growth and acquisitions. BitGo's custody services are primarily aimed at institutional investors, and the company has already seen a 60% increase in new clients this year, with stake assets up 40x.