American Express taps blockchain in new all-in-one travel app [https://www.thestreet.com/.image/t_share/MjE3NzcwMTgxMTE0NDcyMjg0/gettyimages-521773562.jpg] American Express taps blockchain in new all-in-one travel app Amex adds blockchain-powered tools to streamline booking and lounge access. [https://www.thestreet.com/crypto/markets/american-express-taps-blockchain-in-new-all-in-one-travel-app]
