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 MetaMask is testing a Mastercard payment card, which it says is the first entirely on-chain card.
https://www.coindesk.com/resizer/YofLb0IqygYaEnjamuRwSOAMkNs=/1056x595/filters:quality(80):format(webp)/cloudfront-us-east-1.images.arcpublishing.com/coindesk/3YTHDDEURFHJLJTGPU7YIQLEXU.png 
 MetaMask, the popular cryptocurrency wallet for the Ethereum blockchain, is currently testing an entirely on-chain, Mastercard-branded payment card. This innovative card is designed to allow users to spend cryptocurrency "on everyday purchases, everywhere cards are accepted" 
 bsnd 
 The collaboration between MetaMask and Mastercard is significant, as it combines MetaMask's large user base of over 30 million monthly active users with Mastercard's extensive global payment network