Sebastian Siemiatkowski has introduced KlarnaUSD, a stablecoin pegged to the US dollar, through Klarna and in partnership with Stripe, Tempo, and Paradigm.KlarnaUSD is designed to reduce payment costs for consumers and merchants, with public availability pending extensive testing and integration on the Tempo blockchain.Sebastian Siemiatkowski previously expressed skepticism following the FTX collapse, but now joins companies like Revolut and PayPal exploring blockchain-based payments.