IOTA-based app wins CODEVID19 Hackathon to fight coronavirusBy Marcel KnoblochApr 25, 2020 at 10:45 AM GMT+1 The IOTA-based app “Open Marketplace” wins week five of the CODEVID19 Hackathon. The Open Marketplace provides a decentralized marketplace that aims to bring together local businesses and traders in one…