A unit of Ant Group Co. is quietly making inroads to link over 60 billion yuan ($8.4 billion) worth of energy infrastructure and other real-world power assets to its blockchain, according to people familiar with the matter. Ant Digital Technologies, the enterprise solutions arm of the Jack Ma-backed fintech giant, has been tracking the power output and potential outages of some 15 million new energy devices including wind turbines and solar panels in China, and uploading the data to its blockchain, which ...