(Bloomberg) -- Bitcoin developer Blockstream Corp. raised $210 million through a convertible note offering that will be used to finance the rollout of the company’s layer-2 technologies, expand mining operations and to buy more of the cryptocurrency.Most Read from BloombergHow Mexico City Averted All-Out DroughtDubai’s Allure to Expats Is Weighing on City’s InfrastructureThe Master Plan That Shaped Pakistan’s Capital Is No Longer WorkingAs Brussels Booms, an Old Boogeyman Returns: Brusselization