The US Food and Drug Administration is moving closer to adopting a blockchain-based system for tracking pharmaceuticals through the supply chain. IBM, KPMG, Merck, and Walmart are collaborating in a new test program that will see if the project has legs, and IBM in particular is pretty keen to show that the system can work, as it quite fancies selling heaps of cloud-based services to businesses that adopt the framework. Walmart has been surprisingly evangelical about the potential for blockchain, perhaps owing to the immense pressure it is facing in the US from Amazon, which is encroaching on its turf with real zeal following the acquisition of Whole Foods. Walmart has a pretty competent online retail business, but it is…