Ten million dollars just landed for a startup building the plumbing that lets stablecoins move like payments. Stablecoins are digital tokens pegged to a fixed value, most commonly one U.S. dollar, so they hold their price where assets like bitcoin and ether do not. Diameter Pay, a stablecoin payments infrastructure startup, raised that amount in a Series A round co-led by CMT Digital and Lightspeed Faction.
Infrastructure is the operative word. In payments, that term covers the layer beneath any visible transaction: the routing, settlement logic, and connectivity that has to work before a merchant or consumer sees a confirmation screen. Card networks and bank transfer systems have spent decades building and refining that layer for traditional currency. For stablecoin-denominated payments, a comparable layer is still being built, and that is the gap Diameter Pay is positioning itself to fill.
A Series A is the first major institutional round a startup typically raises, following an earlier seed stage that funds the initial proof of concept. Capital at this stage generally goes toward hiring and building out the core product.
CMT Digital and Lightspeed Faction co-led the round. Co-leading means both firms each took a primary position in the $10 million, rather than one anchoring while the other contributed a smaller amount alongside it.