Crypto-native payments rails have struggled to keep up with scale. Fun is betting that it’s built the fix.

The startup announced Friday that it raised $72 million in a Series A led by Multicoin Capital and SignalFire.

Founded in 2022 and previously in stealth, Fun serves as the sole deposit provider for the prediction market Polymarket and also handles payment flows for Lighter and Aave. The project processes over $18 billion a year for millions of users around the world.

Fun is targeting technological barriers that still shape how value moves, Alex Fine, Fun’s founder and CEO, said in a statement.

“The infrastructure for moving money has not kept up with how the world actually works. We are building a system…