Building Counterfactual Execution. Change one event in committed history. Re-execute what follows. Verify what survives.
Joined October 2026
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yeah yeah, we know 😅
we've been talking a lot about what RHOOK could do. fair enough. we're working on the part where we actually show it
but the rabbit hole goes pretty deep
what if LP rewards were turned off during a real swap? what if a buy limit never existed?
or here's one we really want to explore: take a real DeFi exploit, add a safety rule, replay the same transactions. does it actually stop the attack, or does something else happen?
that's the kind of stuff we want to find out
starting with @Hookrfun pools. we'll show the receipts when they're ready 👀
Small $RHOOK update 🪝
Enhanced Token Info on DEX Screener is paid for! ✅
Meanwhile, we're building the Counterfactual Execution SDK and analyzing real Hookr market transactions as we work toward our first integration.
Still early. Still building.
🌐 robinhook.tech
This is a recorded demo of one bounded historical experiment - not a live replay service or a public native SDK yet
Next we're building a better developer workflow: ask several questions about the same alternative world without replaying it every time
What if one action in a blockchain's past changed which later transactions still work? 👀
Genesis showed the ripple effect.
Now RHOOK's second public demo asks: which exact transaction breaks - and can we verify it?
robinhook.tech/counterfactua…
Of 279 later transactions, exactly 1 changed its SUCCESS/REVERT status. The other 278 kept theirs.
Not a bigger domino effect than Genesis
The progress: 2 separate EVM engines agreed on the replay, and one Claim passed verification under fixed rules
Hookr is making market rules programmable
RHOOK asks what happens to the history those rules create
take a real pool
change one valid rule at launch
re-execute what followed
inspect what actually changes downstream
building this integration now
Big Hookr update goes live today:
Build your own @Uniswap v4 hook from Hook Blocks: proven hook legos you pick, tune and remix, no code needed. So far we had 6. This update adds 21 new Hook Blocks and tools.
Two ways to launch:
• Deploy your own hook with your Hook Blocks in one transaction, then submit it to Uniswap for verification
• Use Hookr's general hook with your chosen Blocks, with nothing to deploy.
Both work for new tokens and tokens that already exist.
What's better:
• Cheaper: swaps use about 47% to 70% less gas, launches about 40% less.
• Locked down: a pool's Hook Blocks are frozen at launch, and new ones wait in a timelock.
• More: up to 8 pools per token, half of arb profit back to LPs and traders, up to 3x rewards for locked LP, any quote asset.
The Hook Blocks:
Launching: Anti-Snipe, Multi-pool launch, Dev buy lock.
Trading: Dynamic fees, Arb recapture, King of the Pool, Market-hours fee.
For LPs: LP Rewards, Launch lock, LP Time-Lock Boost.
For creators and treasuries: Auto Burn, Creator royalty, Managed fee, Programs.
Launching later today:
• Deploy your own hook with your Hook Blocks in one transaction, then submit it to Uniswap for verification.
• Zero-seed and auction launches, Canonical Venue Token.
• Buy/Sell Block, Market Guard, Swap Reward Mint, Zap Relay.
• Entry Ratio Guarantee, Recovery reserve, Pay Later.
• Tax + Conversion, Revenue Router, Vesting Milestone, Floor bid, Dev Drip.
• Auction launches run on Uniswap's Continuous Clearing Auction.
• Partner tax and the Hook Blocks Market for third-party Hook Blocks.
Built to plug into Uniswap:
• Every Hookr pool is a Uniswap v4 pool
• Trades through the Universal Router, with the caller as the named trader
• HookrQuoter answers in V4Quoter's shape, same selectors, exact to the wei
• Auction launches run on Uniswap's Continuous Clearing Auction
For integrators:
• SDK: TypeScript on viem, builds every launch, swap, quote and claim
• Every contract verified on Blockscout and Sourcify
• Partner tax, referrals and the Hook Blocks Market for third-party Hook Blocks
Programs, referrals, the Managed fee and the Market-hours fee open in coming days.
👑💧King of the Pool:
Our new Hook Block: each round, the biggest buy on a pool takes the crown and wins a prize from a pot filled by arb recapture. Built with the What The Hook team, who also helped us update the UI. Huge shout out to them.
New team we're excited to start working with on custom hooks @PareStocks. They split a tokenized stock into two things you can trade separately. And we're working on some really cool custom Hook Blocks with every team. Lots more coming. Stay tuned.
This version is being submitted for an external audit.
Below is a detailed breakdown of how everything works:
hookr.fun/docs/guides/the-ne…
Smart contract architecture:
hookr.fun/docs/concepts/arch…
This is where RHOOK started
Replaying a real pool’s history under a changed rule was the first wedge
What grew out of it is broader: programmable counterfactual execution over committed history
Same origin. Much bigger protocol direction
🪝Last week on Hookr.
🔌 New incoming integrations:
@Saffron brings fixed-yield vaults to Hookr pools, so LPs can lock in a fixed return.
@ZEALZdotfun is opening a zZEC pool with a low base fee and LP rewards.
rhook by @a_seven_life replays a pool's real history with and without a rule, so you can see what a rule would have done.
@hooddomains puts .hood names on Hookr creators and pools.
@openaicu, from the Long ecosystem, will launch its tokens on Hookr with a custom rule.
@longbowlend, a lending protocol on Robinhood Chain, plugging in idle capital for borrowing and using Hookr pools for liquidations / collateral swaps.
@pumpPill brings launch protection: Dev-Drip escrows creator tokens and releases them slowly, and Sniper Rebate taxes early sells to pay the buyers who held.
VolaDelta brings a lucky draw where swap fees pay out to buyers who held.
🏗️ More than 95% of trades on Hookr pools happen outside hookr.fun
🐊 The robinhood:0x18e674231a58c239dc7daedcffe15ec3a24cff5c page now shows the aggregators that route it.
📊HookrScan update: Paste a Uniswap v4 hook from Robinhood Chain, Base, Unichain, Ethereum, Arbitrum or OP Mainnet and it shows every permission it enables right on the hook and gives it a Hook Score. On Robinhood Chain it also finds every pool the hook is on. Every report now has its own share link and a score card for X and Telegram.
⛽️ The next Hookr update cuts gas per swap and per launch roughly in half.
🤝 Special mention to the @whatthehookv4 team. They helped us find a lot of these gas savings and we have been working closely with them on King of the Hill: each round, the top buyer wins a bonus paid from arb recapture.
