ThunderFi

thunderFi is a gasless, privacy-preserving USDC trading and payout platform designed to eliminate friction in onchain trading. Users deposit once, open instant off-chain trading sessions, and execute fast, private USDC trades without paying gas on every action. All activity is aggregated and settled efficiently with a single final on-chain transaction, enabling seamless payouts and chain-abstracted liquidity across multiple blockchain networks.

thunderFi was built by combining off-chain execution with minimal on-chain settlement to achieve speed, privacy, and cost efficiency. We use Yellow SDK (Nitrolite) to open instant off-chain trading sessions, enabling gasless, high-frequency USDC trades without touching the chain on every action. Privacy-enhanced swaps are powered by Uniswap v4 Hooks, while Arc and Circle tooling provide chain-abstracted USDC liquidity and seamless payouts across networks. The notable hack is executing many private, instant trades off-chain and settling only once on-chain, dramatically reducing gas, latency, and user friction while preserving security.