Hundreds of leading companies are already using or aiming to use blockchain technology. Some leading businesses employing blockchain, include HSBC, Barclays, Visa, CDC, Shell, Siemens, Van Drop, Etihad, Delta, Scotia bank, Ford, Walmart, DHL, British Airways, and Unilever. Over the coming years, all big businesses will increasingly start using blockchain, along with SMEs and disruptive startups looking for a digital edge.