While Farcaster Storage Gift primarily operates on the Optimism network for purchasing storage, it also functions independently on Polygon PoS by facilitating cross-chain payments. This means that even though the storage transactions are handled on Optimism, users can seamlessly use their Polygon assets to make payments without needing to interact directly with the Optimism network.

On the Polygon PoS side, the project handles the entire payment process, ensuring that users can pay using Polygon without any additional steps or conversions. This independent functionality on Polygon PoS allows the project to offer a smooth and efficient payment experience, leveraging the speed and low transaction costs of the Polygon network while still delivering the storage on Optimism.