Credit card companies are trying to sweeten the perks they offer their customers, and American Express is doing just that through a new partnership with crypto wealth management platform and wallet provider Abra. The companies' CEOs announced the launch of the Abra Crypto Card on the Amex network today at Coindesk's Consensus conference in Austin, Texas.

The card will allow users transacting in U.S. dollars to earn cryptocurrency rewards on their purchases through the Amex network, Bill Barhydt, founder and CEO of Abra told TechCrunch in an interview.

Abra declined to share details on which cryptocurrencies will be available to users in the first version of its card, which will launch late this year, but Barhydt said the offering will eventually allow users to choose to receive their rewards through multiple different cryptocurrencies as well as traditional rewards such as entertainment and dining-related perks already offered on the Amex platform.

Users can choose to receive rewards in the form of Abra's ERC-20 Crypto Perx (CPRX) token or another cryptocurrency, he explained. CPRX is a utility token with more than a million holders already through Abra's own perks program, according to Barhydt. The credit card will offer customers some sort of benefit for choosing to receive their rewards in CPRX versus another cryptocurrency, Barhydt said, though details are still unclear.

Card users will have to be registered with Abra, and the card will function by having these users apply for a line of credit, Barhydt explained. Once they start earning crypto rewards, they'll be able to use Abra's swap exchange to convert these rewards across different cryptocurrencies easily, he added.

"Eventually, we're also working on a solution that will allow you to use your existing crypto balance to affect your credit line, which is something we'll probably launch in the future. I think that's a big benefit because a lot of crypto holders are kind of penalized when it comes to banking and credit," Barhydt said.