Recent investments lend proof that Digital Sandbox KC is working. Digital Sandbox KC, a program providing proof-of-concept resources for new and existing businesses, received two recent grants totaling nearly $1 million. The Ewing Marion Kauffman Foundation renewed its support for the program with $450,000, and the Missouri Technology Corp. awarded a $500,000 MOBEC grant. “Digital Sandbox KC plays a pivotal role in the Kansas City entrepreneurial ecosystem,” said Erin Jenkins,…