Demo: Marketplace for Impact Certificates. - Devansh Mehta; Nidhi Harihar; Siddique Patel; Nishit Lalitkumar Sanil; Richard Shallam; Mark J. Roddy; Filipa Ribeiro; Thomas Pan; Colleen Rose; The Beyondr; Chiali Tsai (CSCW Companion, 2024)