Most users on Farcaster have funds on Base rather than Polygon. In order to solve for this and let users on Farcaster use our product on Polygon, we worked with Decent.xyz to implement their cross-chain SDK, so users can pay with their funds on Base and receive their card on Polygon. We've seen numerous users use our frame as their first onchain action on Polygon and then go on to bridge funds to Polygon and use our website and other apps on Polygon as a result.