Building on-chain infrastructure
for Uniswap V4.

Turns a passive limit order into a yield-bearing position — and refunds the user for impermanent loss out of the yield it earns.

• Oracle-free IL rebate — impermanent loss derived from sqrtPriceX96 deltas via a 2nd-order Taylor approximation; rebate = min(yield, IL).
• Yield routing — executed output deposited into an ERC-4626 vault until claim: real Aave (waBasUSDC) on Base, a simulated vault on Unichain.
• Orders as NFTs — every order is an ERC-721: composable and tradable on secondary markets.
• O(1) tick scanning — doubly-linked list of active ticks only; cost scales with populated ticks crossed, not range width.
• Anti-DoS execution — failed orders emit and re-queue instead of reverting the swap, with gas metering against OOG.
• Audit-hardened — per-pool order isolation, a per-currency solvency invariant, and a hard trigger-price gate, backed by Foundry invariant tests; scope + threat model documented for external review.
• Security research — graded the vault path against OpenZeppelin's audit of Uniswap Labs' DualPoolHook, and found a medium-severity permanent fund lock: a permissionlessly-poisoned pool baseline overflowed the IL math inside the only exit path for a filled order. Fixed with a saturating cast, proven end-to-end and mutation-verified.

Production limit orders for Uniswap V4 with automated, gas-bounded execution triggered directly inside swaps.

• Self-executing — orders fill in the afterSwap hook as the pool crosses their tick. No keepers, no relayers.
• O(1) tick buckets — doubly-linked list of populated ticks for constant-time lookup during execution.
• Anti-DoS, graceful execution — a failing order never bricks the swap path.
• Bounded gas — 5 BPS execution fee, gas-metered batch execution, 150k gas cutoff per swap.
• Audit-ready — documented scope and invariants for external review.