kanth

Flash LP enables Uniswap v4 liquidity providers to rent out their positions by the second, solving DeFi's massive capital waste problem. Protocols launching new tokens currently pay $12,500 for 30-day liquidity mining but only need deep liquidity for 48 hours. With Flash LP, they rent exactly what they need for $1,248 (90% savings). We built this using three key technologies: Yellow Network state channels for zero-gas per-second billing (21,600 micropayments cost $0.28 vs $3,024 on-chain), custom Uniswap v4 hooks for time-locked position management with dynamic 4D pricing, and USDC settlement for seamless cross-chain rentals. Our TLVM Protocol uses temporal pricing curves, ZK-proof predictions, and virtual liquidity for instant access. LPs earn 4-10x more during peak periods, renters save 90% on costs, and everything settles in seconds. Built with Solidity, Foundry, Wagmi, deployed on Base/Arbitrum/Optimism testnets.

This project was built as a modern web application using Next.js and TypeScript for a fast and reliable frontend. Wallet connections and blockchain interactions are handled using Wagmi, Viem, and RainbowKit. Uniswap v4 hooks are used to lock and control liquidity positions during the rental period. Per-second payments are enabled using Yellow Network state channels, which allow real-time fee calculation without high gas costs. LI.FI is used to support cross-chain liquidity movement. Smart contracts manage rentals, timers, and security, while React Query handles live updates. A notable hacky part is the real-time fee counter that updates every second using off-chain state channels, making micropayments practical.