Making onchain launches fair. A Uniswap V4 hook that taxes snipers, not humans. Building at IMD Protocol
IMD
Joined June 2026
- Tweets21
- Following5
- Followers23
- Likes17
Pinned Tweet
Sigmoid is live.
A fair Community Coin launchpad powered by FairOpenHook, a Uniswap V4 hook that counters sniper bots with a dynamic fee, a circuit breaker, and wallet caps.
Website: sigmoid-imd.vercel.app
GitHub: github.com/n0krayy/FairOpenH…
Proven on a mainnet fork: the replayed attack (118.88 IMD for 2,129 tokens, a 22,059x swing) reverts with BreakerTripped() with the hook attached. A 0.01 IMD control trade passed normally.
Live on Robinhood Chain: 0x51871F67273A56CDbdd8D9a936a98D3032Cb60C8
How Sigmoid counters it:
1. Dynamic fee: 0.30% base, rising to 37.8% at 25% price impact, capped at 90%
2. Circuit breaker: reverts swaps moving price over 25% inside the 100-block opening window
3. Wallet caps: max 0.5% of supply per wallet, one swap per 3 blocks
Why it matters? in the replayed SWARMLER #1212 attack.
Bots extracted 4.39% of supply for dust plus gas. When a launch gets sniped in its first blocks, real community members end up buying the top.
Sigmoid defends the opening window at the pool layer.
Sigmoid is live.
A fair Community Coin launchpad powered by FairOpenHook, a Uniswap V4 hook that counters sniper bots with a dynamic fee, a circuit breaker, and wallet caps.
Website: sigmoid-imd.vercel.app
GitHub: github.com/n0krayy/FairOpenH…
Love this. Vaults keep supply honest after launch.
Sigmoid keeps the launch itself honest at block 1:
- dynamic fee
- circuit breaker
- wallet caps in the opening window.
Lock the supply, guard the open. The full stack writes itself.
pinning this
I will support things building on top of IMD and participate in the ecosystem as I am a degen
no time to do research all the time or focus, some things will probably rug
Do not ever buy anything bc I buy anything or mint anything specially from my doxxed wallet is literally just a meme wallet I never sell anything on it or trade there, or use it for much
building is fun
launching is hard, mostly because bots eat the first blocks.
we built the hook that makes launches fun again:
- dynamic fee
- circuit breaker
- wallet caps
fair from first block.
Small commit, big signal
QuoteToken in FairLaunchpad is now IMD on Robinhood Chain, not tIMD on testnet.
Comments don't lie, this is where the launchpad lives now.
Demo upgrade:
It now reads live FairLaunchpad events onchain. Every protected launch shows up in real time token, pool, liquidity, all of it.
The demo stopped being a simulation a while ago. Now it's a window.
The same wallet keeps showing up.
SC #1175: a bot scooped ~6.3% of supply within the first 14 blocks.
The EOA behind it? same one from the SWARMLER case.
This isn't bad luck. It's a network.
Why launches aren't fair
SWARMLER #1212. block + 1 after launch. 1 transaction.
Price swung 121,000,000x. Attacker walked away with 43.9M tokens
4.39% of supply.
Cost to attacker? dust + gas.
We replayed the actual SWARMLER attack. 🪝
Same attacker wallet. same 118.88 IMD. Same block.
Mainnet fork, real IMD PoolManager, real $IMD
Without the hook: 22,059x price swing. Attack succeeds
With FairOpenHook: REVERT. BreakerTripped()
normal trading is untouched
0.01 $IMD buy on a healthy hooked pool succeeds at a fair price
We don't break price discovery. We break attackers
Don't trust us. Reproduce it:
forge test --match-contract AttackReplay -vv
Real pool manager. Real $IMD. Real attacker wallet. Fork it and try to break it