The Arts Foundation of Cape Cod is hosting an online silent auction starting on Thursday, July 23, at noon through Sunday, Aug. 9, at 9:30 p.m., featuring art by Traci Harmon-Hay, Sarah Lutz, Pete Hocking, and others. There will also be a live auction, streaming from the Chatham Bars Inn on Thursday, Aug. 6, at 6 p.m., with works by Donald Beal, Cynthia Packard, and more. Visit artsfoundation.org to register and bid.