The 3% tax

One fee, in one place: a Uniswap v4 hook on the canonical $IWA/ETH pool captures 3% of every swap and streams it straight into prizes.

The tax lives only in the pool's swap hook, applied afterSwap in the unspecified currency of the trade — sells pay in ETH, buys pay in $IWA. The token itself is a vanilla ERC-20: wallet-to-wallet transfers are never taxed because no code path exists that could tax them.

• 300 bps total — 200 bps to the PoolStocker (prize funding), 100 bps to the dev wallet. All three numbers are compile-time constants; no function exists to change them.
• LP fee is 0 — the hook fee is the entire spread, so the quoted 3% is the whole cost of a swap.
• ETH funds the stocks — stock purchases are funded from collected ETH; $IWA is never sold by the protocol to fund prizes, so the treasury adds no sell pressure.
• No control surface — the hook has no pause, no blacklist, no wallet limits, no direction gating. Sells are always exactly as open as buys.