American Express is the first financial services company in the U.S. to deploy blockchain technology in support of a large loyalty program. Amex is leveraging Hyperledger Fabric, an open source blockchain framework, to give merchants in the U.S. the ability to issue Membership Rewards on their own platforms to boost sales of specific products. Hyperledger’s Fabric can work with any merchant’s inventory management system. Amex’s first merchant partner is Boxed.com, which will offer Membership Rewards points on its website to Amex cardholders who purchase any of six different products. ...