PhotonPay announced over the weekend it has joined Circle Internet Financial’s fledgling Arc blockchain, representing the latest participant for Arc since Circle unveiled the network in August. With its participation in Arc, 10-year-old PhotonPay now hopes to leverage its position in cross-border payment flows. Arc, which functions as part of the Circle Payments Network, is aimed at speeding foreign-exchange by providing what Circle calls “sub-second” finality in settlement. The importance of Arc to Circle includes its ability to generate so-called gas fees, or payments to miners for validating blockchain transactions. Allaire added that Circle is “exploring a token for the Arc network,” though he did not elaborate.