Bute

BaseRegistered

Bute is a Uniswap v4 hook on Base. A bonding-curve ERC-20 token (BUTE) that uses beforeSwap to intercept ETH-in swaps: it mints BUTE via a multi-factor curve (temporal decay, burn echo, peak bonus) and returns a BeforeSwapDelta, routing buys through the hook's own ETH reserve. Sell-side swaps pass through unmodified; selling BUTE is handled via a direct sell() function.

Contract name: Bute

0xa9c20b3d6a83e654b3183d630192b70c6e980088 First pool 10 May 2026View on explorer

ALooks safeRegistered, verified, immutable, no admin

Pools

Dynamic-fee pools

Last new pool

6mo

Code size

19,833 B

What it can do

Runs code on every swap

Its code executes inside each trade in pools that use it.

Can take tokens from swaps

It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.

Safety report

Automated checks, not an audit

✓Not upgradeableNo proxy pattern found: the code is fixed.

✓No owner foundNo owner() function: nobody has an admin switch (as far as the standard check goes).

!In Uniswap’s hook registry, not tradeable in Uniswap’s app yetRegistered with Uniswap Labs (a listing, not a security review). It runs code on swaps, so Uniswap’s app only routes it once Uniswap Labs approves it, and it isn’t approved yet. Adding liquidity still works, and other apps can trade it.

✓Source code publishedThe code on the block explorer matches what's deployed (contract: Bute).

iCan change swap amountsIt has a ReturnDelta permission. Normal for fees and burns, but also how fake-quote hooks steal.

?No audit linkedAutomated checks only.

Pools using this hook

2 total

PairCreatedFeePool ID

ETH / BUTE 6mo 0.30% 0xc9dd…b343 Tx ↗

WETH / BUTE 6mo 0.30% 0xe650…8be5 Tx ↗