Correspondent banks have been quietly withdrawing from entire markets for years, citing sanctions exposure and anti-money-laundering risk. That retreat is opening a lane for infrastructure built specifically to replace them, and Diameter Pay just raised $10 million in a Series A, co-led by CMT Digital and Lightspeed Faction, to build in it.
Diameter Pay gives banks and financial institutions outside the US a single API for dollar accounts, domestic and international payments, stablecoin on- and off-ramps, and the compliance controls needed to manage the risk that made correspondent banks pull out in the first place. The company says it has processed more than $10 billion year-to-date in 2026, working across multiple US banking partners rather than a single correspondent relationship. Additional backers in the round include SixThirty Ventures, Stellar Development Foundation, Tech Council Ventures, Onigiri Capital, and BitRock Capital.
Why it matters: “the world is becoming more global, but the financial system is becoming more fragmented,” Diameter Pay founder and chief executive David Lighton said of the gap the company is targeting. That fragmentation is not a temporary glitch. It is the direct result of correspondent banks de-risking away from markets they judge too costly to monitor, which means the businesses in those markets need dollar access engineered around compliance from the start, not bolted on afterward. Nium made a similar bet this month by letting businesses fund payouts directly in USDC, and the pattern extends to the broader consolidation of stablecoin settlement infrastructure into single platforms.
The original insight: investors backing Diameter Pay are explicit that stablecoins alone do not solve this problem. As CMT Digital partner Charlie Sandor put it, stablecoins “don’t replace the need for trusted access to the US banking system.” The real product being sold is not dollar liquidity itself but the compliance layer that makes a bank willing to grant that access at all, which is a services business, not a crypto rail.
Source: PR Newswire
