The whitepaper, in plain ink.

SUMI is a best-execution hook for Uniswap v4. On an ordinary AMM a swap sits exposed between signing and settlement — visible in the mempool, exploitable by searchers. SUMI closes that gap at the hook level, before the swap settles.

The stroke — the swap — is a single motion. The price shown is the price defended. Value that used to leak stays with the trader, the LPs, and — via staking — the protocol holders.

Four Solidity components, deployed on any Uniswap v4 chain:

• The hook — implements beforeSwap / afterSwap, and where applicable beforeSwapReturnDelta.
• Reference-price + toxicity estimator — decides what the honest price is and whether flow is likely toxic.
• Recapture accounting + distributor — tracks recaptured value and routes the protocol share to stakers in real assets.
• Staking + governance — stake $SUMI for revenue share and governance over pools, strictness, and split.

The estimator is the #1 risk surface. If it can be spoofed into thinking predatory flow is honest — or into mispricing honest flow — the guarantee breaks. Constraints:

• Reference derives from robust pool state, not a single manipulable spot read.
• Short TWAP-style smoothing dampens oracle-style manipulation.
• Per-swap movement is capped.
• False-positive rate on honest flow is a first-class metric.
• The estimator is assumed to be probed adversarially.

Inside the block, the hook mitigates sandwich bracketing, harmful in-block reordering, and toxic slippage on visible pending flow.

SUMI does not, alone, solve cross-block MEV or extraction that happens at the builder / proposer level. It is not "MEV-proof" — and we do not say that. That phrase is a red flag anywhere you see it.

All returns come from value that is no longer lost:

• Traders get better fills.
• LPs keep the fee/slippage value that used to leak.
• A small share of recaptured value goes to $SUMI stakers, in real assets.

Yields vary. Emissions, if any, are bootstrap-only and clearly labeled.

$SUMI is the governance and revenue-share token. Staking grants a share of recaptured value in real assets. Governance covers which pools run the hook, how strict the protection is, and how recaptured value is split.

• Stroke — a single clean swap at one honest price.
• Clean execution — a fill at or better than the shown price, protected from sandwich/front-run.
• Toxic flow — predatory or informed flow the hook charges or blocks.
• Recaptured value — slippage/MEV kept in the pool instead of leaking to searchers.
• Real yield — trader/LP/staker benefit funded by recaptured value + real fees. Never emissions.