The credit-card provider didn’t disclose the amount invested in the San Mateo, California-based startup, which raised $17 million in May from the likes of Accel, Coinbase Ventures and a fund affiliated with Fidelity Investments’ parent company.
AmEx has been investigating cryptocurrencies for years. In 2019, the company rolled out an app that uses blockchain -- the digital ledger behind many cryptocurrencies -- to let contractors and vendors reconcile invoices and time sheets. Amex ...